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2018年47卷8期37篇论文

 

<RECORD 1>

Accession number:20184706112778

Title:Ge-Ga-Se-CsI Chalcohalide with Low Zero Dispersion Wavelength

Authors:Chen, Peng (1, 2); Xue, Zu-Gang (1, 2); Tian, You-Mei (1, 2); Zhao, Zhe-Ming (3); Zhang, Pei-Qing (1, 2); Wang, Xun-Si (1, 2); Dai, Shi-Xun (1, 2); Wang, Rong-Ping (1, 2); Xu, Tie-Feng (1, 2)

Author affiliation:(1) Research Institute of Advanced Technology, College of Information, Ningbo University, Ningbo; Zhejiang; 315211, China; (2) Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo; Zhejiang; 315211, China; (3) Nanhu College, Jiaxing University, Jiaxing; Zhejiang; 314001, China

Corresponding author:Zhao, Zhe-Ming(zhaozheming_27@sina.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0816002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The dispersion functioning mechanism of low-dispersion halides on chalcogenide glasses is studied on the influence of glass composition optimizing, refractive index adjusting and zero-dispersion wavelength shifting, with the help of Ge-Ga-Se-CsI chalcohalide glass preparation. The physical and infrared optical properties of the glasses were tested by differential scanning calorimetry, infrared ellipsometer and infrared spectrometer. The purification process and glass composition to the glass formation and their optical properties were studied detailedly. The material dispersion curves of the two glass samples were calculated based on the measured data of refractive index. The experimental results show that the transmission range of the glasses is from visible to far infrared (0.55~18 &mu;m); With the content of CsI increasing, the zero-dispersion wavelength of material decreases, in the value of 3.5 &mu;m and 1.5 &mu;m, corresponding to 20% CsI- and 40% CsI-chalcohalide glass, respectively. At the same time, the thermal stability of the two glasses is enough high, which is favorable for the preparation of low-dispersion mid-infrared fiber. Combined with effective glass purification method and high-temperature polymer-coating protection, a single refractive index chalcohalide glass fiber with a minimum loss of 8.2 dB/m was obtained.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Iodine compounds

Controlled terms:Cesium iodide - Differential scanning calorimetry - Dispersion (waves) - Gallium compounds - Germanium compounds - Glass - Infrared devices - Optical parametric oscillators - Plastic coatings - Purification  - Refractive index - Selenium compounds - Thermodynamic stability

Uncontrolled terms:Blue shift - Chalcohalide glass - Material dispersions - Midinfrared - Zero-dispersion wavelength

Classification code:641.1  Thermodynamics - 741.1  Light/Optics - 804  Chemical Products Generally - 812.3  Glass - 813.2  Coating Materials - 944.6  Temperature Measurements

Numerical data indexing:Percentage 2.00e+01%, Percentage 4.00e+01%, Size 1.50e-06m, Size 3.50e-06m, Size 5.50e-07m to 1.80e-05m

DOI:10.3788/gzxb20184708.0816002

Funding Details: Number; Acronym; Sponsor: 61377099; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61627815; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61705091; NSFC; National Natural Science Foundation of China - Number; Sponsor: LR18F050002; Natural Science Foundation of Zhejiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 2>

Accession number:20184706112746

Title:In-situ Analysis of Molten Aluminum by Laser-induced Breakdown Spectroscopy System

Authors:Xin, Yong (1, 2, 3); Li, Yang (1, 2); Li, Wei (4); Liu, Xue (4); Li, Jing-Jing (4); Yang, Zhi-Jia (1, 2); Yu, Hai-Bin (1, 2); Sun, Lan-Xiang (1, 2)

Author affiliation:(1) Laboratory of Industrial Control Network and System, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang; 110016, China; (2) CAS Key Laboratory of Networked Control Systems, Shenyang; 110016, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Liaoning Zhongwang Group Co., Ltd., Liaoyang; Liaoning; 111003, China

Corresponding author:Sun, Lan-Xiang(sunlanxiang@sia.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:LIBS on-line analyzer for liquid metal composition, which is designed by the LIBS project group of Shenyang Institute of automation, Chinese Academy of Sciences, is a analytical system for on-line monitoring of molten metal components in the metallurgical industry. We used this system to monitor the composition of molten aluminum in melting and casting plant of Liaoning Zhongwang Group Co., Ltd. After several months testing, we obtained that the optimum flow rate of argon in the probe tube is 1~1.4 L/min, and when the detection depth is located at the position where the pressure fluctuation range of argon is &plusmn;300 Pa and the pressure fluctuation is regular, the concentration of each element is stable. Finally, we calibrated our equipment by solid sampling data from laboratory analysis. The obtained results of on-line monitoring are as follows: the repeatability accuracy of Si, Fe, Cu, Mn and Cr is less than 2%; the measurement deviationis less than 0.01% for Si, Fe, Mg (concentration is between 0.1%~1%), and is less than 0.001% for Cu, Mn and Cr (concentration is less than 0.1%); the stability of the multiple rise and fall of the probe is less than 3%. On-line monitoring data meet the requirements of factory, so we can realize real time and on-line monitoring the compositions of molten aluminum.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:27

Main heading:Monitoring

Controlled terms:Argon - Atomic emission spectroscopy - Laser induced breakdown spectroscopy - Liquid metals - Metallurgy - Probes - Protactinium - Voltage measurement

Uncontrolled terms:Analytical systems - Chinese Academy of Sciences - Laboratory analysis - Metallurgical industry - Molten aluminum - On-line - Pressure fluctuation - Repetition precision

Classification code:531.1  Metallurgy - 622.1  Radioactive Materials, General - 804  Chemical Products Generally - 931.1  Mechanics - 942.2  Electric Variables Measurements

Numerical data indexing:Percentage 1.00e-01%, Percentage 1.00e-02%, Percentage 1.00e-03%, Percentage 3.00e+00%

DOI:10.3788/gzxb20184708.0847002

Funding Details: Number; Acronym; Sponsor: 61473279; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 3>

Accession number:20184706112767

Title:Numerical Simulation and Experiment on Infrared Features of Exhaust Plume Based on Monte Carlo Method

Authors:Zheng, Hai-Jing (1); Bai, Ting-Zhu (1); Wang, Quan-Xi (2)

Author affiliation:(1) School of Optoelectronics, Beijing Institute of Technology, Beijing; 100081, China; (2) System Division, Navy Equipment Research Institute, Beijing; 100073, China

Corresponding author:Bai, Ting-Zhu(tzhbai@bit.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0826001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:According to the absorption characteristics of exhaust plume, a numerical model of the infrared radiation characteristics of the exhaust plume based on Monte Carlo method is set up. Then, the infrared radiation characteristics of exhaust plumes from a engine are simulated in the five infrared bands (1.32~1.69 &mu;m, 1.56~2.27 &mu;m, 2.27~3.8 &mu;m, 3.8~8.3 &mu;m and 8.3~20 &mu;m) by this model. For verifing the rationality and reliability of the numerical simulation model, a test of the spectrum features of exhaust plume from the engine is conducted. The results suggest that there is strongest radiation of the liquid-engine exhaust plume in the band of 2.27~3.8 &mu;m and maximum radiation area in the long-wave infrared band of 8.3~20 &mu;m.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Monte Carlo methods

Controlled terms:Absorption spectroscopy - Engines - Infrared absorption - Infrared radiation - Light absorption - Numerical methods - Numerical models - Physical properties - Spectrum analysis - Thermal plumes

Uncontrolled terms:Absorption characteristics - Infrared features - Infrared radiation characteristic - Long wave infrared bands - Monte Carlo calculation - Plume dynamics - Radaition effect - Spectrum features

Classification code:711  Electromagnetic Waves - 741.1  Light/Optics - 921  Mathematics - 921.6  Numerical Methods - 922.2  Mathematical Statistics - 931.2  Physical Properties of Gases, Liquids and Solids

Numerical data indexing:Size 1.32e-06m to 1.69e-06m, Size 1.56e-06m to 2.27e-06m, Size 2.27e-06m to 3.80e-06m, Size 3.80e-06m to 8.30e-06m, Size 8.30e-06m to 2.00e-05m

DOI:10.3788/gzxb20184708.0826001

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 4>

Accession number:20184706112765

Title:Effect on Diffraction Efficiency of Diffractive Optics with Consideration of Surface Roughness

Authors:Zhao, Li-Dong (1); Cui, Qing-Feng (1); Mao, Shan (1); Zhao, Yuan-Ming (1); Piao, Ming-Xu (1); Hu, Yang (1)

Author affiliation:(1) Institute of Photoelectric Engineering, Changchun University of Science and Technology, Changchun; 130022, China

Corresponding author:Cui, Qing-Feng(qf_cui@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0822002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the expression of phase delay of the multi-layer diffractive optical elements, the mathematical model of diffraction efficiency and polychromatic integral diffraction efficiency under the influence of single-point diamond turning is proposed, and the analytical expressions are correspondingly provided. The application of the multi-layer diffractive optical elements whose substrates are composed of ZnSe and ZnS for each layer is simulated and analyzed in near-infrared waveband (1.4~2.5 m). The results show that the surface roughness error leads to a decrease in the diffraction efficiency and the polychromatic integral diffraction efficiency of the multilayer diffractive optical elements, making the imaging quality of the hybrid imaging optical system decreased. Therefore, when the single-point diamond turning is used to cut optical elements, the result is instructive to draw out justified limit surface roughness error according to usage requirements.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Surface roughness

Controlled terms:Density (optical) - Diffraction efficiency - Diffractive optical elements - Diffractive optics - Efficiency - II-VI semiconductors - Infrared devices - Optical multilayers - Optical systems - Selenium compounds  - Sulfur compounds - Turning - Zinc sulfide

Uncontrolled terms:Analytical expressions - Hybrid imaging - Imaging quality - Infrared systems - Microstructure fabrication - Near-infrared waveband - Phase delay - Single point diamond turning

Classification code:604.2  Machining Operations - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 804.2  Inorganic Compounds - 913.1  Production Engineering - 931.2  Physical Properties of Gases, Liquids and Solids

Numerical data indexing:Size 1.40e+00m to 2.50e+00m

DOI:10.3788/gzxb20184708.0822002

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 5>

Accession number:20184706112761

Title:Ultra-compact Bandwidth-tunable Microring Resonator

Authors:Dong, Wen (1); Zou, Yu (2); Du, Ying (2); Le, Zi-Chun (2)

Author affiliation:(1) College of Environment, Zhejiang University of Technology, Hangzhou; 310014, China; (2) College of Sciences, Zhejiang University of Technology, Hangzhou; 310023, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0823001

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the coupling characteristics of slot waveguides and the thermo-optical modulation, an ultra-compact microring resonator on silicon-on-insulator with the size of 15 &mu;m&times;20 &mu;m is proposed, whose bandwidth can be tuned by adjusting the heater power. The tunability characteristic is simulated through finite difference time domain method, the result demonstrates when the wavelength of incident light is 1 550 nm, its adjustable bandwidth range is 2.5 nm at 1 900 nm wavelength for TE mode and 3.1 nm at 1 543 nm wavelength for TM mode by applying the heater power from 0 mW to 0.742 mW. The proposed device with small size, low driving power and wide tunable range of bandwidth is very promising for dynamic integrated optical signal processing such as reconfigurable filtering and routing.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Finite difference time domain method

Controlled terms:Bandwidth - Light modulation - Optical resonators - Optical signal processing - Silicon on insulator technology - Time domain analysis - Waveguides

Uncontrolled terms:Adjustable bandwidth - Coupling characteristic - Driving power - Incident light - Microring resonator - Reconfigurable - Slot waveguide - Tunabilities

Classification code:714.2  Semiconductor Devices and Integrated Circuits - 714.3  Waveguides - 716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 921  Mathematics

Numerical data indexing:Power 0.00e+00W to 7.42e-04W, Size 1.54e-06m, Size 1.55e-06m, Size 1.90e-06m, Size 2.50e-09m, Size 3.10e-09m

DOI:10.3788/gzxb20184708.0823001

Funding Details: Number; Acronym; Sponsor: 61172081; NSFC; National Natural Science Foundation of China - Number; Sponsor: LZ13F010001; Natural Science Foundation of Zhejiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 6>

Accession number:20184706112753

Title:Determination of Terrestrial and Marine Sedimentary Rocks by Laser-induced Breakdown Spectroscopy

Authors:She, Ming-Jun (1); Fu, Hong-Bo (2); Jia, Jun-Wei (2, 3); Wang, Hua-Dong (2, 3); Dong, Feng-Zhong (2, 3)

Author affiliation:(1) Mud Logging Company of Zhongyuan Petroleum Engineering Co.,Ltd., Puyang; Henan; 457001, China; (2) Anhui Institute of Optics and Fine Mechanics, Hefei; 230031, China; (3) University of Science and Technology of China, Hefei; 230026, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847009

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:This paper mainly investigates the ability of laser-induced breakdown spectroscopy to discriminate the sedimentary facies of untreated rock samples. Twenty-seven continental and 14 marine sediment samples identified by geologists were used as samples to be analyzed. The line intensity of B, the integral intensity ratio of B/Ga, Sr/Ba, and Fe/Mn lines are used as the discrimination basis for discriminating the deposition phase. Because B, Ga, Sr, and Ba are very low in the rock and are not evenly distributed, a small amount of sample is difficult to distinguish. The content of Fe and Mn is relatively high, so Fe/Mn can distinguish the terrestrial and marine sediment samples well. Overall, the best distinguishing performance was exhibited with respect to other discrimination based on Fe II 259.940 nm/Mn II 259.372 nm. The results show that laser-induced breakdown spectroscopy can quickly and accurately discriminate the sedimentary facies of rock samples at the logging site.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:24

Main heading:Sedimentary rocks

Controlled terms:Atomic emission spectroscopy - Iron compounds - Laser induced breakdown spectroscopy - Manganese compounds - Rocks - Sedimentology - Submarine geology

Uncontrolled terms:Content of Fe - Deposition phase - Determination - Intensity ratio - Line intensities - Logging sites - Marine sediments - Sedimentary facies

Classification code:481.1  Geology - 482.2  Minerals - 931.1  Mechanics

Numerical data indexing:Size 2.59e-07m

DOI:10.3788/gzxb20184708.0847009

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 7>

Accession number:20184706112762

Title:Effect of Alcohol on Air Tightness of LED Silicone Encapsulation

Authors:Wen, Shang-Sheng (1); Peng, Xing (2); Ma, Bing-Xu (1); Song, Jia-Liang (1); Fu, Min (1); Fang, Fang (3); Hu, Jie-Pin (1); Kang, Li-Juan (4); Kong, Ling-Bao (2)

Author affiliation:(1) State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou; 510640, China; (2) Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, School of Information Science and Technology, Fudan University, Shanghai; 200433, China; (3) Gold Metal Analytical&amp;Testing Group, Guangzhou; 511300, China; (4) Academy of Fine Arts Souths China Normal University, Guangzhou; 510631, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0823002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to explore the impact of Light Emitting Diode (LED) silicone package on the LED failure, the failure case of LED packaging glue is chosed to analyze the failure. Fourier transform infrared spectroscopy and gas chromatography mass spectrometry were used to analyze the composition of the failed samples. Finally, the failure mechanism of the samples was obtained based on the analysis results. The analysis results show that, the chemical incompatibility of the material in the LED lamp bead package sealing process leads to the failure of the sealing glue, and the LED lamp beads have a poor air tightness, which affects the light, electricity, heat, mechanical structure, and material properties. LED reliability is reduced; therefore, in the manufacturing process of LED, it is also necessary to avoid material incompatibility and increase the reliability of the LED.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:24

Main heading:Light emitting diodes

Controlled terms:Computer system recovery - Failure (mechanical) - Fourier transform infrared spectroscopy - Gas chromatography - Glues - Gluing - Mass spectrometry - Reliability - Silicones

Uncontrolled terms:Chemical incompatibility - Failure mechanism - Gas chromatography-mass spectrometry - Gastightness - Incompatibility - Light emitting diode (LED) - Manufacturing process - Mechanical structures

Classification code:714.2  Semiconductor Devices and Integrated Circuits - 801  Chemistry - 802.3  Chemical Operations - 815.1.1  Organic Polymers

DOI:10.3788/gzxb20184708.0823002

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 8>

Accession number:20184706112754

Title:Quantitative Analysis of Aluminium Alloy with Remote Laser-induced Breakdown Spectroscopy

Authors:Zhang, Da-Cheng (1, 2); Feng, Zhong-Qi (1); Li, Xiao-Gang (2); Xu, Li-Jun (2); Zhao, Dong-Mei (2); Zhu, Xiao-Long (2); Ma, Xin-Wen (2)

Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou; 730000, China

Corresponding author:Ma, Xin-Wen(x.ma@impcas.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847010

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A remote laser-induced breakdown spectroscopy device was constructed by combination a nanosecond Nd:YAG laser with a Cassegrain telescope. The distance of measurement can be up to 25 m. In addition, the quantitative analysis of micro elements, Pb, Fe and Ni, in the standard sample of aluminum alloy at different distances is studied. The experimental results show that the correlation coefficients of the calibration curves for Pb, Fe and Ni are all higher than 0.97 at the distances from 5 to 20 meters. Though the intensity of spectral signals decreased rapidly with distance, there was not significantly different of the limits of detection with the increase of measurement distance in our experiments.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Spectrum analysis

Controlled terms:Aluminum alloys - Atomic emission spectroscopy - Calibration - Laser induced breakdown spectroscopy - Neodymium lasers - Spectroscopic analysis - Yttrium aluminum garnet

Uncontrolled terms:Calibration curves - Cassegrain telescopes - Correlation coefficient - Limits of detection - Plasma spectroscopy - Remote detection - Remote laser-induced breakdown spectroscopy - Standard samples

Classification code:541.2  Aluminum Alloys - 744.4  Solid State Lasers - 801  Chemistry - 931.1  Mechanics

Numerical data indexing:Size 2.50e+01m, Size 5.00e+00m to 2.00e+01m

DOI:10.3788/gzxb20184708.0847010

Funding Details: Number; Acronym; Sponsor: 91536013; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 9>

Accession number:20184706112747

Title:Absolute Calibration of Laser-induced Breakdown Spectroscopy Detection System by Using a Tungsten Halogen Lamp

Authors:Fei, Teng (1); Pan, Cong-Yuan (2); Zeng, Qiang (1); Du, Xue-Wei (1); Wang, Qiu-Ping (1)

Author affiliation:(1) National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei; 230029, China; (2) College of Electrical Engineering and Automation, Anhui University, Hefei; 230601, China

Corresponding author:Wang, Qiu-Ping(qiuping@ustc.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847003

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An absolute calibration setup for laser-induced breakdown spectroscopy detection system is built based on the radiometry theory. A tungsten halogen lamp equipped with an ultraviolet glass filter and a fused silica diffuser is used as standard light source for the calibration. Absolute calibration of a laser-induced breakdown spectroscopy detection system with a Czerny-Turner spectrometer in the ultraviolet range is performed. The absolute spectral response of the system in the range of 310~385 nm is obtained with an uncertainty less than 7% by 2 standard deviation estimate. The absolute spectral calibration provides a way to evaluate the hardware of the laser-induced breakdown spectroscopy detection system.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Calibration

Controlled terms:Atomic emission spectroscopy - Fused silica - Laser induced breakdown spectroscopy - Laser theory - Spectrometers - Tungsten - Uncertainty analysis

Uncontrolled terms:Absolute calibration - Czerny-Turner spectrometer - Detection system - Glass filters - Spectral calibration - Spectral response - Standard deviation - Tungsten halogen lamp

Classification code:543.5  Tungsten and Alloys - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 812.3  Glass - 922.1  Probability Theory - 931.1  Mechanics

Numerical data indexing:Percentage 7.00e+00%, Size 3.10e-07m to 3.85e-07m

DOI:10.3788/gzxb20184708.0847003

Funding Details: Number; Acronym; Sponsor: 11704372; NSFC; National Natural Science Foundation of China - Number; Sponsor: 1708085QF130; Natural Science Foundation of Anhui Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 10>

Accession number:20184706112750

Title:Characteristics of Discharge Channel in Spark Discharge Assisted Laser-induced Breakdown Spectroscopy

Authors:Dong, Bo (1); He, Xiao-Yong (1); Wang, Ya-Rui (1); Chen, Yu-Qi (1); Li, Run-Hua (1)

Author affiliation:(1) School of Physics and Optoelectronics, South China University of Technology, Guangzhou; 510641, China

Corresponding author:Li, Run-Hua(rhli@scut.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847006

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The relationship between the discharge channel and the time delay between the spark discharge and the laser pulse in spark discharge assisted laser-induced breakdown spectroscopy was investigated by using a gate-able pulsed high-voltage power source as the power supplier of the spark discharge. It was demonstrated that under suitable laser pulse energy and geometrical arrangement of the electrodes, it was possible to change the discharge channel from "V-shaped" type to parallel type by adjusting this time delay. In the "V-shaped" discharge, the spark discharge was able to increase the diameters of the craters and deteriorate the lateral resolution. However, in the parallel discharge, the spark discharge did not increase the diameters of the craters ensuring that the spatial resolution in this technique was only determined by laser-ablation. Under the condition of parallel discharge, quantitative analysis of chromium in aluminum alloy with spark discharge assisted laser-induced breakdown spectroscopy was carried out and the limit of detection of chromium reached 8.8 ppm, which was 8 times better than that obtained in LIBS without the assistance of the spark discharge. By using spark discharge under external trigger mode in the spark discharge assisted laser-induced breakdown spectroscopy, it is convenient to realize parallel discharge and surface elemental analysis of samples under high spatial resolution.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Pulsed lasers

Controlled terms:Aluminum alloys - Atomic emission spectroscopy - Chemical analysis - Chromium alloys - Image resolution - Laser ablation - Laser pulses - Spectrum analysis - Time delay

Uncontrolled terms:Discharge channel - Element analysis - Geometrical arrangements - High spatial resolution - Limit of detection - Pulsed high voltage - Spark discharge - Surface elemental analysis

Classification code:541.2  Aluminum Alloys - 543.1  Chromium and Alloys - 713  Electronic Circuits - 744.1  Lasers, General - 744.8  Laser Beam Interactions

DOI:10.3788/gzxb20184708.0847006

Funding Details: Number; Acronym; Sponsor: 11274123; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11304100; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 11>

Accession number:20184706112757

Title:Effects of Hemispherical Confinement on the Enhancement of Laser- induced Glass Plasma Radiation

Authors:Wang, Jing-Ge (1); Li, Xiao-Long (1); Hu, Jun-Tao (1); Li, Xin-Zhong (1)

Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; Henan; 471023, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847013

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to enhance the radiation spectrum signal of laser-induced glass plasma, a hemispherical cavity which was made of glass fiber with a diameter of 10 mm was used to confine the plasma. The spectrum signals with confinement and without confinement were compared. Since the focusing of the laser has a great influence on the properties of the glass plasma, the focusing position of the laser in the sample was first optimized. The results show that when the sample surface is 3 mm above the focal plane of the lens, the spectral singnal from the laser-induced glass plasma was the strongest. Then the temporal evolution of spectral intensity under unconstrained and spatially constrained by a hemispherical cavity with the inner diameter of 10 mm was studied. The time evolution of the enhancement factor og the spectral intensity was analyzed. The results show that the spectral lines with confiment presents an enhanced phenomenon in the period of 6~15 &mu;s after plasma generation. And the degree of enhancement of spectral lines with different energy levels is different. The maximum enhancement is achieved when the acquisition delay is 10 &mu;s. Finally, the effect of laser energy on the enhancement of plasma radiation was studied. The results show that with the increase of laser energy, the enhancement factor of the spectral line is gradually increased. When the laser energy exceeds 170 mJ, the spectral enhancement effect begins to decrease.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:22

Main heading:Glass

Controlled terms:Cyclotron resonance - Laser produced plasmas - Radiation effects - Spectroscopy - Water vapor

Uncontrolled terms:Enhancement factor - Hemispherical cavities - Laser induced plasma - Radiation spectra - Spectral enhancement - Spectral intensity - Temporal evolution - Time evolutions

Classification code:744.9  Laser Applications - 812.3  Glass

Numerical data indexing:Energy 1.70e-01J, Size 1.00e-02m, Size 3.00e-03m, Time 1.00e-05s, Time 6.00e-06s to 1.50e-05s

DOI:10.3788/gzxb20184708.0847013

Funding Details: Number; Acronym; Sponsor: 11504091; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 12>

Accession number:20184706112774

Title:Research and Improvement Based on PGC Demodulation Method

Authors:Sun, Wei (1); Yu, Miao (1); Chang, Tian-Ying (1); Chen, Jian-Dong (1); Cui, Hong-Liang (1); Pang, Shuo (1)

Author affiliation:(1) College of Instrumentation &amp; Electrical Engineering, Jilin University, Changchun; 130012, China

Corresponding author:Chang, Tian-Ying(tchang@jlu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0806004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to obtain higher linearity and stronger anti-interference ability, an improved phase generation carrier demodulation algorithm was proposed. By using the interference signal and the base frequency mixing signal to perform the operation, the difference between the two signal times and the two signals is differentiated and the demodulation of the detected signal is realized. The simulation results verify the feasibility and advantages of the improved demodulation algorithm, the stronger anti-interference ability and higher linearity are obtained comparing with the conventional demodulation method, and the limitations that the fundamental frequency mixer applies only to the limitations of small signal is eliminated; The experimental system is built to verify the high accuracy of frequency demodulation and the consistency of the intensity response.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Demodulation

Controlled terms:Optical fibers - Optical variables measurement

Uncontrolled terms:DC components - Light intensity - Optical fiber sensing - Phase demodulation - Phase generation carriers

Classification code:741.1.2  Fiber Optics - 941.4  Optical Variables Measurements

DOI:10.3788/gzxb20184708.0806004

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 13>

Accession number:20184706112749

Title:Quantitative Analysis of Unburned Carbon in Fly Ash by Laser-induced Breakdown Spectroscopy

Authors:Hu, Ruo-Mu (1); Wang, Zhen-Zhen (1, 2); Liu, Ren-Wei (1, 2); Zhou, Wang-Zheng (1); Liu, Ji-Ping (1); Yan, Jun-Jie (1); Yoshihiro, Deguchi (1, 2)

Author affiliation:(1) School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (2) Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima; 770-8501, Japan

Corresponding author:Wang, Zhen-Zhen(zhenzhen-wang@xjtu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847005

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To verify the ability of LIBS to measure the change of carbon content in fly ash, in this study, 24 samples with different carbon content were obtained by mixing pulverized coal and fly ash in a certain proportion. Spectra of these samples from LIBS were studied in different delay time. The emission intensity ratio of I<inf>Mg1</inf>/I<inf>Mg2</inf> decreases with the increase of delay time. The emission intensity ratio of fly ash samples is obviously higher than that of other samples mixed with pulverized coal. The emission intensity ratio of I<inf>Al</inf>/I<inf>Si1</inf> decreases with the increase of I<inf>Mg1</inf>/I<inf>Mg2</inf>. The addition of pulverized coal in the fly ash sample has a significant influence on the temperature change of plasma. By introducing the method of multivariate analysis, the ratios of spectral lines intensity of elements such as C, Al, Mg, Ca, Fe to that of Si element were calculated as the independent variable of multivariate regression analysis, and the concentration of carbon element was taken as dependent variable, and the regression equation under different delay time was established. The results showed that the errors between the predicted values and the reference values based on the regression model were within 9%.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:24

Main heading:Coal ash

Controlled terms:Atomic emission spectroscopy - Carbon - Chemical analysis - Coal - Coal research - Fly ash - Laser induced breakdown spectroscopy - Multivariant analysis - Pulverized fuel - Regression analysis

Uncontrolled terms:Delay Time - Emission intensity ratio - Independent variables - Multi variate analysis - Multiple regressions - Multivariate regression analysis - Temperature changes - Unburned carbon in fly ashes

Classification code:524  Solid Fuels - 804  Chemical Products Generally - 922  Statistical Methods - 922.2  Mathematical Statistics - 931.1  Mechanics

Numerical data indexing:Percentage 9.00e+00%

DOI:10.3788/gzxb20184708.0847005

Funding Details: Number; Acronym; Sponsor: 51506171; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 14>

Accession number:20184706112775

Title:Photoelectric Characteristics of Trichromatic Organic Photodetectors with Hybrid Structure

Authors:An, Tao (1); Liu, Dan (1); Wu, Jun-Yu (1)

Author affiliation:(1) College of Automation and Information Engineering, Xi'an University of Technology, Xi'an; 710048, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0804001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:By adopting solution spin coating and high-vacuum evaporation process, trichromatic organic photodetectors with planar and heterojunction hybrid device structures were prepared. The experiment was used to explore the active layer thickness, mixing degree of different components and the influence of the pre-absorption layer on the photoelectric properties of the device. On this basis, sample preparation and testing of trichromatic organic photodetectors were performed. The results show that the absorption of light by the photodetector device of the hybrid structure covers almost the entire visible light region, and exhibits a broad spectrum response similar to that of the platform-type light in the range of 350~700 nm. Under the bias voltage of -1 V, the detectivity of red, green, and blue light are 2.89&times;10<sup>11</sup> Jones, 3.22&times;10<sup>11</sup> Jones, and 1.97&times;10<sup>11</sup> Jones, respectively. It shows that the device has good detection effects on red, green and blue light, in particular, the detectivity of red light rise up 3 to 4 times.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:33

Main heading:Light

Controlled terms:Absorption spectroscopy - Heterojunctions - Photodetectors - Photoelectricity - Photons - Vacuum evaporation

Uncontrolled terms:Active Layer - Broad spectral - Hybrid structure - Organic photodetector - PBDT-TT-F:PCBM - Photoelectric characteristics - Trichromatic

Classification code:633.1  Vacuum Applications - 714.2  Semiconductor Devices and Integrated Circuits - 741.1  Light/Optics - 931.3  Atomic and Molecular Physics

Numerical data indexing:Size 3.50e-07m to 7.00e-07m, Voltage -1.00e+00V

DOI:10.3788/gzxb20184708.0804001

Funding Details: Number; Sponsor: 2015JM6267; Natural Science Foundation of Shaanxi Province - Number; Acronym; Sponsor: 61106043; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 15>

Accession number:20184706112770

Title:Echo Characteristics of Satellite Laser Ranging Based on Geiger Mode SPAD

Authors:Liu, Yuan (1, 2); An, Ning (1); Fan, Cun-Bo (1); Wen, Guan-Yu (1); Zhang, Hai-Tao (1); Ma, Lei (1)

Author affiliation:(1) Changchun Observatory/NAO, Chinese Academy of Sciences, Changchun; 130117, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:An, Ning(ann@cho.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0828002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the photoelectric properties of Geiger mode single photon avalanche diode, the effect of laser pulse width and echo intensity on the satellite laser ranging system range precision is analyzed, and the geodynamics satellite is observed by the satellite laser ranging system of Changchun station. The results indicate that when the number of echo photon is about 1 000, the system ranging precision is about 10.2 mm, while the number of echo photon is about 8 000, the system ranging precision is about 9.4 mm, it shows that stronger echo intensity can improve the system ranging precision. When the laser pulse width is 200 ps, the precision of the system is 17.3 mm, while the pulse width is 50 ps, the system ranging precision is 10.0 mm, it indicates that the system range precision is effectively improved with the narrow pulse width. In order to further verify the theoretical conclusion, the Ajisai satellite is observed. The effect of high repetition frequency laser ranging system on the range precision is analyzed. It shows that by using the narrow pulse width and high repetition frequency system, the returns and data density per normal points are greatly increased and the range precision is also improved. Therefore, to improve the echo characteristics of satellite laser ranging system, the high quality laser with narrower laser pulse width, higher frequency and larger energy should be selected as a laser light source of satellite laser ranging system based on the Geiger mode single photon avalanche diode.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:19

Main heading:Tracking (position)

Controlled terms:Avalanche diodes - Detectors - Geiger counters - Laser pulses - Light sources - Particle beams - Photons - Range finding - Satellites

Uncontrolled terms:Echo characteristics - High repetition frequencies - Laser ranging systems - Narrow pulse widths - Photoelectric property - Range precision - Satellite laser ranging - Single photon avalanche diode

Classification code:655.2  Satellites - 714.1  Electron Tubes - 744.1  Lasers, General - 931.3  Atomic and Molecular Physics - 932.1  High Energy Physics - 944.7  Radiation Measuring Instruments

Numerical data indexing:Size 1.00e-02m, Size 1.02e-02m, Size 1.73e-02m, Size 9.40e-03m, Time 2.00e-10s, Time 5.00e-11s

DOI:10.3788/gzxb20184708.0828002

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 16>

Accession number:20184706112771

Title:Influences of Relaxation Oscillation Noise of Pump Laseron Fiber Laser Hydrophones

Authors:Hao, Ge-Yang (1); Wu, Guo-Jun (1, 2); Liu, Bo (1); L&uuml;, Pei (1); Wang, Hao (1)

Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Qingdao National Laboratory for Marine Science and Technology, Qingdao; Shandong; 266237, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0806001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In phase generation carrier demodulation of fiber laser hydrophone, the physical mechanism of inherent noise near 3 kHz is analyzed theoretically and proved by an experiment. The relaxation oscillation peak of pump laser is measured firstly, and the carrier signal frequency is gradually reduced at an interval of 400 Hz to observe the movement direction and magnitude of the inherent noise peak. The experimental results show that with the decrease of the carrier signal, the inherent noise peak moves to the low frequency direction, and the movement interval is also 400 Hz. Therefore, it is considered that carrier signal superimposed with the relaxation oscillation noise of pump laser is the cause of the inherent noise. Finally, the inherent noise is suppressed and a relatively flat background noise spectrum is obtained through reducing the carrier signal frequency of phase generation carrier demodulation algorithm.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Pumping (laser)

Controlled terms:Demodulation - Fiber lasers - Fiber optics - Fibers - Hydrophones - Optical variables measurement

Uncontrolled terms:Demodulation algorithms - Distributed feedback fiber lasers - Flat backgrounds - Phase generated carriers - Phase generation carriers - Physical mechanism - Relaxation oscillation - Relaxation oscillation noise

Classification code:741.1.2  Fiber Optics - 744.1  Lasers, General - 744.4  Solid State Lasers - 752.1  Acoustic Devices - 941.4  Optical Variables Measurements

Numerical data indexing:Frequency 3.00e+03Hz, Frequency 4.00e+02Hz

DOI:10.3788/gzxb20184708.0806001

Funding Details: Number; Acronym; Sponsor: 2017WHZZB0603; QNLM; Qingdao National Laboratory for Marine Science and&nbsp;Technology - Number; Acronym; Sponsor: 61405244; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 17>

Accession number:20184706112777

Title:Preparation and Luminescent Properties of Phosphor Sr<inf>2</inf>La<inf>8</inf>(SiO<inf>4</inf>)<inf>6</inf>O<inf>2</inf>:Eu<sup>(2+,3+)</sup>

Authors:Wang, Fei (1, 2)

Author affiliation:(1) Experimental Center, Anhui Sanlian University, Hefei; 230601, China; (2) College of Chemistry and Chemical Engineering, Anhui University, Hefei; 230601, China

Corresponding author:Wang, Fei(wangfchina@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0816001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A series of luminescence phosphors Sr<inf>2</inf>La<inf>8</inf>(SiO<inf>4</inf>)<inf>6</inf>O<inf>2</inf>:Eu<sup>(2+,3+)</sup>were prepared via solid-state reaction. The results of X-ray powder diffraction data analysis show that the fluorescent powder is apatite structure, belonging to the six square system, which has P6<inf>3</inf>/m (176) space point group structure. The fluorescence spectra of the samples indicate that the excitation spectrum of Sr<inf>2</inf>La<inf>8</inf>(SiO<inf>4</inf>)<inf>6</inf>O<inf>2</inf>:Eu <sup>(2+, 3+)</sup> is located at 200~600 nm, consisting of two broad peaks of 275 nm and 336 nm, as well as some other sharp peaks of 392 nm, 461 nm, 466 nm, 523 nm and so on. The two broadband excitation peaks can be fitted by three peaks of 272 nm, 300 nm and 336 nm, with a peak area ratio of 1:0.52:4.09. 272 nm and 300 nm belongs to the charge transport excited transition state of the Eu<sup>3+</sup>, and the 336 nm peak comes from the f-d transition of Eu<sup>2+</sup>. Under the excitation of 393 nm, the emission spectrum of Sr<inf>2</inf>La<inf>8</inf>(SiO<inf>4</inf>)<inf>6</inf>O<inf>2</inf>:Eu<sup>(2+,3+)</sup> in 500 ~750 nm shows many sharp lines with the maximum peak at 613 nm, belonging to <sup> 5</sup>D<inf>0</inf>&rarr;<sup>7</sup>F<inf>1</inf> of the electric dipole transition, and Eu<sup>3+</sup> has occupied no inversion center of symmetry site. Eu<sup>3+</sup> magnetic dipole transition from <sup>5</sup>D<inf>0</inf>&rarr;<sup>7</sup>F<inf>1</inf> peak is fitted by four peaks of 584.5 nm, 588.5 nm, 594 nm, 597 nm, showing that the Eu<sup>3+</sup> into the host lattice occupy 4f (C<inf>3</inf>) and 6h (C<inf>s</inf>) two case. The results of X-ray photoelectron spectroscopy analysis show that the ratio of Eu<sup>3+</sup> and Eu<sup>2+</sup> is close to 2:1 in the sample. There is energy transfer between Eu<sup>2+</sup> and Eu<sup>3+</sup>. The sample is irradiated with an ultraviolet lamp, showing a color of candlelight yellow, which has the value of application of LED.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Crystal structure

Controlled terms:Apatite - Electric excitation - Electric lines - Emission spectroscopy - Energy transfer - Excited states - Fluorescence - Light emitting diodes - Phosphors - Solid state reactions  - Spectrum analysis - X ray photoelectron spectroscopy - X ray powder diffraction

Uncontrolled terms:Apatite structures - Broadband excitation - Electric dipole transition - Emission spectrums - Excitation spectrum - Fluorescence spectra - Luminescent property - Magnetic dipole transition

Classification code:482.2  Minerals - 701.1  Electricity: Basic Concepts and Phenomena - 706.2  Electric Power Lines and Equipment - 714.2  Semiconductor Devices and Integrated Circuits - 741.1  Light/Optics - 802.2  Chemical Reactions - 931.3  Atomic and Molecular Physics - 933.1.1  Crystal Lattice

Numerical data indexing:Size 2.00e-07m to 6.00e-07m, Size 2.72e-07m, Size 2.75e-07m, Size 3.00e-07m, Size 3.36e-07m, Size 3.92e-07m, Size 3.93e-07m, Size 4.61e-07m, Size 4.66e-07m, Size 5.00e-07m to 7.50e-07m, Size 5.23e-07m, Size 5.85e-07m, Size 5.89e-07m, Size 5.94e-07m, Size 5.97e-07m, Size 6.13e-07m

DOI:10.3788/gzxb20184708.0816001

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 18>

Accession number:20184706112780

Title:Transport Properties of Charge Carriers in Pyrazolo-[3,4-b]-quinoline Derivative Doped Poly (N-vinylcarbazole) Film

Authors:Mu, Lin-Ping (1); He, Zhi-Qun (2)

Author affiliation:(1) School of Physics and Information Engineering, Shanxi Normal University, Linfen; Shanxi; 041004, China; (2) Key Laboratory of Luminescence and Optical Information, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing; 100044, China

Corresponding author:He, Zhi-Qun(zhqhe@bjtu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0831001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The influence of doping of 1-phenyl-3,4-dimethyl-1H-pyrazolo-[3,4-b]-quinoline (PAQ5) on transport properties of charge carriers in Poly(N-vinylcarbazole) (PVK) polymer film was investigated in this paper. It can be seen from the macro relationships of current density J to electric field F that, when the electric field F is in the range of 10<sup>6</sup>~ 10<sup>7</sup> V&bull;cm<sup>-1</sup>, current density in pure PVK thin films is J&prop;F<sup>2.1</sup>,and in the doped PVK film with PAQ5 (4.8 wt%), J&prop;F<sup>2.9</sup>.The enhancement of the conductivity of the doped thin film in addition to the space charge limited current injected from the anode into PVK lay which was forming through holes transmission, there is also electronic current transported by doped particles PAQ5 which was injection from cathode. The transient photocurrent spectrums of the films measurement by Time of Flight method were analyzed. The results show that: under low electric field of 1&times;10<sup>5</sup>~2&times;10<sup>5</sup> V&bull;cm<sup>-1</sup>, the main transmission carriers in the naked PVK film are holes, and its mobility is about 7.6&times;10<sup>-5</sup> cm<sup>2</sup>&bull;V<sup>-1</sup>&bull;s<sup>-1</sup>, while the information of electronic migration is too weak to be confirm. Carrier migration performance in the doped PVK film with 2 wt% PAQ5 is not distinct change from neked PVK film. And in the doped PVK film with 5 wt% PAQ5, the mobility of holes is about 6.0&times;10<sup>-5</sup> cm<sup>2</sup>&bull;V<sup>-1</sup>&bull;s<sup>-1</sup>, and about 7.9&times;10<sup>-6</sup> cm<sup>2</sup>&bull;V<sup>-1</sup>&bull;s<sup>-1</sup> for electrons. The significant increase in electronic transport properties of doped PVK films is due to the transmission channels established by PAQ5.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:25

Main heading:Thin films

Controlled terms:Carrier mobility - Carrier transport - Charge carriers - Electric conductivity - Electric fields - Electrodes - Polymer films - Semiconducting films - Semiconductor doping - Semiconductor quantum wells  - Transport properties

Uncontrolled terms:Doped - Electronic transport properties - Poly(N-vinylcarbazole) - Quinoline derivative - Space charge limited currents - Time of Flight methods - Transient photocurrents - Transmission channels

Classification code:701.1  Electricity: Basic Concepts and Phenomena - 712.1  Semiconducting Materials - 714.2  Semiconductor Devices and Integrated Circuits - 815.1  Polymeric Materials - 931.2  Physical Properties of Gases, Liquids and Solids

DOI:10.3788/gzxb20184708.0831001

Funding Details: Number; Acronym; Sponsor: 11474017; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 20811120041; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 19>

Accession number:20184706112769

Title:Land Integrated Navigation of Laser Doppler Velocimeter Based on Janus Configuration

Authors:Wang, Qi (1); Gao, Chun-Feng (1); Wei, Guo (1); Zhou, Jian (1); Nie, Xiao-Ming (1); Long, Xing-Wu (1)

Author affiliation:(1) College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha; 410073, China

Corresponding author:Long, Xing-Wu(xwlong110@sina.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0828001

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To suppress the influence of the vehicle jolts and the inclination variations on conventional laser Doppler velocimeters, a split-reuse laser Doppler velocimeter based on Janus configuration is designed. The velocimeter is composed of two velocimeter subsystems which are mirror-mounted and insensitive to the inclination variations by compensating the influence of the inclination variations on the velocity measurement. The vehicle experiment results show that the relative error of the velocimeter is 0.3% and the maximum position error of its integrated navigation is 5.8 m in a 55.6 km journey. The proposed laser Doppler velocimeter can effectively suppress the influence of the vehicle jolts and the inclination variations on velocity measurement and improve the positioning accuracy of integrated navigation systems, so it is more suitable for land integrated navigation.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Velocity measurement

Controlled terms:Air navigation - Classifiers - Doppler effect - Inertial navigation systems - Laser Doppler velocimeters - Vehicles - Velocity

Uncontrolled terms:Applied optics - Integrated navigation systems - Janus configuration - Positioning accuracy - Split-reuse

Classification code:431.5  Air Navigation and Traffic Control - 802.1  Chemical Plants and Equipment - 943.1  Mechanical Instruments - 943.3  Special Purpose Instruments

Numerical data indexing:Percentage 3.00e-01%, Size 5.56e+04m, Size 5.80e+00m

DOI:10.3788/gzxb20184708.0828001

Funding Details: Number; Acronym; Sponsor: 61308060; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 20>

Accession number:20184706112751

Title:Influence of Diameter and Depth on Spatially Confined Laser-induced Silicon Plasma Spectroscopy with Cylindrical Cavity

Authors:Wang, Qiu-Yun (1); Chen, An-Min (1); Li, Su-Yu (1); Jiang, Yuan-Fei (1); Jin, Ming-Xing (1)

Author affiliation:(1) Institute of Atomic and Molecular Physics, Jilin University, Changchun; 130012, China

Corresponding author:Chen, An-Min(amchen@jlu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847007

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The influence of depth and diameter on spatially confined laser-induced silicon plasma spectroscopy with cylindrical cavity was studied in air. 5&times;5 groups of cylindrical cavities were used to confine the laser-induced plasmas in current experiments, with diameters of 4, 6, 8, 10, and 12 mm. Each diameter corresponded to five different depths: 2, 4, 6, 8, and 10 mm, respectively. A Q-switched Nd:YAG laser with the repetition of 10 Hz and the pulse width of 10 ns was used to excite plasma inside different cylindrical cavities with various diameters and depths. Laser energy was 70 mJ. In current experimental conditions, when the diameter was 6 mm and the depth of cylindrical cavity is 2 mm, the line intensity of Si (I) 390.55 nm could obtain the maximum. Continue to increase the diameter and depth of cavity, the line intensity of Si (I) 390.55 nm decreased. We hope that this study serves as a helpful reference for future research on spatially confined LIBS.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:23

Main heading:Neodymium lasers

Controlled terms:Atomic emission spectroscopy - Laser induced breakdown spectroscopy - Laser produced plasmas - Yttrium aluminum garnet

Uncontrolled terms:Cylindrical cavities - Experimental conditions - Laser induced plasma - Line intensities - Plasma spectroscopy - Q switched Nd:YAG laser - Spatial confinement - Spectral enhancement

Classification code:744.4  Solid State Lasers - 744.9  Laser Applications - 931.1  Mechanics

Numerical data indexing:Energy 7.00e-02J, Frequency 1.00e+01Hz, Size 1.00e-02m, Size 1.20e-02m, Size 2.00e-03m, Size 3.91e-07m, Size 6.00e-03m, Time 1.00e-08s

DOI:10.3788/gzxb20184708.0847007

Funding Details: Number; Acronym; Sponsor: 11474129; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11504129; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11674128; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 21>

Accession number:20184706112772

Title:Fiber Dispersion Measurement Based on Multi-longitudinal Mode Beat Frequency

Authors:Wang, Xu (1); Zhang, Ling-Juan (1); Chen, Long-Fei (1); Li, Xiao-Kang (1); Wang, Fang (1); Liu, Yu-Fang (1)

Author affiliation:(1) College of Electronic and Electrical Engineering, Henan Normal University, Xinxiang; Henan; 453007, China

Corresponding author:Zhang, Ling-Juan(2276656607@qq.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0806002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The dispersion measurement of optical fiber is realized by utilizing the relationship between the multi-longitudinal mode beat frequency of the laser and dispersion coefficient of resonant cavity. A narrow band and wavelength tunable reflector is used as the rear-cavity mirror of the fiber laser in the proposed system, which is based on the combination of the fiber Fabery-Perot tunable filter and the optical fiber circulator. The Sagnac interferometer is used as the front-cavity mirror. The tested optical fiber is inserted in the resonator. The beat frequency of the fiber laser is measured by the spectrum analyzer, which is changed with the output wavelength of laser, and then the dispersion coefficient of the sample is obtained. The dispersion coefficient of dispersion compensation fiber and standard single mode fiber are measured respectively. The experimental results indicate that the measurement accuracy of the proposed system can meet the requirements of the communication optical fiber measurement. The proposed method has the advantages of high measurement speed, low cost, simple structure and good application prospect.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Optical fiber communication

Controlled terms:Dispersion (waves) - Fabry-Perot interferometers - Fiber lasers - Fiber optic sensors - Laser mirrors - Optical fibers - Single mode fibers - Spectrum analyzers

Uncontrolled terms:Dispersion coefficient - Dispersion measurements - Measurement accuracy - Multi-longitudinal modes - Optical fiber measurement - Sagnac interferometer - Standard single mode fibers - Tunable Fabry-Perot filters

Classification code:717.1  Optical Communication Systems - 741.1.2  Fiber Optics - 741.3  Optical Devices and Systems - 744.4  Solid State Lasers - 744.7  Laser Components - 941.3  Optical Instruments

DOI:10.3788/gzxb20184708.0806002

Funding Details: Number; Acronym; Sponsor: 61307122; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61475043; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 22>

Accession number:20184706112755

Title:Quantitative Analysis of Laser-induced Breakdown Spectroscopy of P and S in Steel Sample Based on Internal Standard Method

Authors:Ding, Yu (1, 2); Xiong, Xiong (1, 2); Zhao, Xing-Qiang (1, 2)

Author affiliation:(1) Jiangsu Key Laboratory of Big Data Analysis Technology, Nanjing University of Information Science &amp; Technology, Nanjing; 210044, China; (2) Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing University of Information Science &amp; Technology, Nanjing; 210044, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847011

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The content of Sulfur and phosphorus in chrome steel samples were quantitatively analyzed by laser induced breakdown spectroscopy. The plasma was obtained by Nd:YAG(1 064 nm)pulse laser in air atmosphere. The spectrum range from 200 to 800 nm was detected by Echelle spectrograph and EMCCD detector. The effects of detection delay time and laser pulse energy on the spectral intensity were investigated. Under optimal conditions, sulfur and phosphorus in the three chrome steel samples were quantitatively analyzed using the internal standard method. The experimental results showed that the maximum relative standard deviation was 2.6%, and the relative errors were -8.3%~12.5%. The content of sulfur in the three chrome steel samples respectively were 0.011%, 0.0079% and 0.0048%, and phosphorus were 0.015%, 0.014% and 0.009%. LIBS technology is an effective tool for spectral analysis and expected to achieve real time, online and rapid detection for steel samples.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:22

Main heading:Spectrum analysis

Controlled terms:Atomic emission spectroscopy - Chemical analysis - Laser induced breakdown spectroscopy - Neodymium lasers - Steel - Yttrium aluminum garnet

Uncontrolled terms:Chrome steels - Echelle spectrograph - Impurity element - Internal standard method - Laser-pulse energy - Optimal conditions - Relative standard deviations - Spectral intensity

Classification code:545.3  Steel - 744.4  Solid State Lasers - 931.1  Mechanics

Numerical data indexing:Percentage 1.10e-02%, Percentage 1.40e-02%, Percentage 1.50e-02%, Percentage 2.60e+00%, Percentage 4.80e-03%, Percentage 7.90e-03%, Percentage 9.00e-03%, Size 1.06e-06m, Size 2.00e-07m to 8.00e-07m

DOI:10.3788/gzxb20184708.0847011

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 23>

Accession number:20184706112756

Title:Magnetic Confinement Effect on Femtosecond Laser-induced Copper Plasma

Authors:Xu, Dong-Hua (1); Song, Chao (2); Zhao, Shang-Yong (1); Gao, Xun (1); Lin, Jing-Quan (1)

Author affiliation:(1) School of Science, Changchun University of Science and Technology, Changchun; 130022, China; (2) School of Chemical and Environmental Engineering, Changchun University of Science and Technology, Changchun; 130022, China

Corresponding author:Gao, Xun(lasercust@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847012

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The spectroscopy collection system of femtosecond laser-induced copper plasma with magnetic confinement was established. The magnetic confinement effects in the femtosecond laser-induced Cu plasma were investigated by optical emission spectroscopy. When plasma was confined by magnetic field with intensity of 0.67 T, the plasma emission continuous and discrete spectrum enhanced meanwhile the discrete spectrum enhanced more significantly. The enhancement factor of Cu atomic line with higher upper level energy is larger. The Cu I 507.6 nm is emitted from the highest upper level energy; its enhancement factor is largest and could be up to 2.8. The persistence duration of copper atomic spectra last longer. The copper atomic spectra enhanced significantly in the early delay time and weakly in late delay time. The electron temperature and number density of plasma in magnetic filed improved.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:22

Main heading:Magnetoplasma

Controlled terms:Atomic spectroscopy - Atoms - Carrier concentration - Copper compounds - Electron temperature - Femtosecond lasers - Magnetism - Optical emission spectroscopy

Uncontrolled terms:Atomic spectra - Collection systems - Discrete spectrum - Enhancement factor - Magnetic confinement - Number density - Plasma emission - Spectral enhancement

Classification code:701.1  Electricity: Basic Concepts and Phenomena - 701.2  Magnetism: Basic Concepts and Phenomena - 931.3  Atomic and Molecular Physics - 941.4  Optical Variables Measurements

Numerical data indexing:Magnetic_Flux_Density 6.70e-01T, Size 5.08e-07m

DOI:10.3788/gzxb20184708.0847012

Funding Details: Number; Sponsor: 20180101283JC; Natural Science Foundation of Jilin Province - Number; Acronym; Sponsor: 61575030; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: XJJLG-2017-10; CUST; Changchun University of Science and Technology

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 24>

Accession number:20184706112764

Title:Design and Parameter Analysis of Laser Deicing Optical System

Authors:Liu, Zhi-Ying (1); Mu, Zhu (1); Wang, Jia-Ke (1); Chang, Zheng (2); Liu, Jin (2)

Author affiliation:(1) Key Laboratory of Optoelectric Measurement and Optical Information Transmission Technology of Ministry of Education, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun; 130022, China; (2) Hubei Hongyang Sanjiang Aerospace electromechanical Co Ltd, Xiaogan; Hubei; 432000, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0822001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the actual requirements of laser deicing process on the spot size and the action distance, the length and transverse dimensions of the laser deicing optical system are calculated according to the process parameters of laser power and anti-laser damage threshold. Then, the adjustable focusing optical system of high power damage with 100~500 m action distance and 200~600 mm spot size is designed. Focusing on the relationship between action distance, spot size and adjustment focusing distance, the theoretical calculation and simulation are carried out. The simulation results show that this system can achieve the desired adjustable distance and spot, which is verified by actual prototype experiments.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Optical systems

Controlled terms:Focusing - Laser damage - Optical design - Snow and ice removal

Uncontrolled terms:Action distance - Laser damage threshold - Parameter analysis - Parameter calculation - Prototype experiment - Spot sizes - Theoretical calculations - Transverse dimensions

Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 744.8  Laser Beam Interactions

Numerical data indexing:Size 1.00e+02m to 5.00e+02m, Size 2.00e-01m to 6.00e-01m

DOI:10.3788/gzxb20184708.0822001

Funding Details: Number; Acronym; Sponsor: 11474037; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 25>

Accession number:20184706112766

Title:Optical System of Hyper-spectral Imaging Sensor with Small F Number in Broadband by Air for the Coastal Ocean Observation

Authors:Shen, Yuan (1); Yu, Lei (2); Chen, Jie-Xiang (2); Xue, Hui (2)

Author affiliation:(1) School of Electronics and Information Engineering, Hefei Normal University, Hefei; 230061, China; (2) Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei; 230031, China

Corresponding author:Yu, Lei(top1gods@email.ustc.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0822003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To solve the problems that the structure is too close to mounting the optomechanism for the engineering application, the bias slit and the thinned hemisphere lens were supplied to move enough lateral and axial air spaces between the slit, the imaging plane and the hemisphere lens. The stigmatic condition for the advanced Dyson system was obtained by the geometric optical path analysis. Another two spherical lenses were introduced between the hemisphere lens and the concave grating to eliminate extra spherical aberrations and chromatic aberrations brought by the axial air spaces. The optical system of the imaging spectrometer with small F number in a broadband was designed by the advanced Dyson spectrometer and Schwarzschild two mirrors system. An example operating in 320~1 000 nm with F number 1.8 was built. The results demonstrate that aberrations are totally corrected, the modulation transfer functions of all fields of view are larger than 0.5 in the waveband, and the spectral resolution is 3.6 nm. The proposed system can be used for the coastal ocean hyper-spectrum observation.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Aberrations

Controlled terms:Aspherics - Optical systems - Regression analysis - Spectrometers - Spectroscopy

Uncontrolled terms:Broadband - Coastal ocean - Dyson system - Hyper spectra - Imaging spectrometers

Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 922.2  Mathematical Statistics

Numerical data indexing:Size 3.20e-07m to 1.00e-06m, Size 3.60e-09m

DOI:10.3788/gzxb20184708.0822003

Funding Details: Number; Sponsor: 2016203; Youth Innovation Promotion Association of the Chinese Academy of Sciences - Number; Acronym; Sponsor: 41504143; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 26>

Accession number:20184706112758

Title:Quantitative Analyses of Element Mn in Iron Using Portable Laser-induced Breakdown Spectroscopy with Algorithm of Background Removal Based on Wavelet Transform

Authors:Zeng, Qing-Dong (1, 2); Zhu, Zhi-Heng (1); Deng, Fan (1); Zhu, Xiang-Li (1); Wang, Bo-Yun (1); Xiao, Yong-Jun (1); Xiong, Liang-Bin (1); Yu, Hua-Qing (1); Guo, Lian-Bo (2); Li, Xiang-You (2)

Author affiliation:(1) School of Physics and Electronic-information Engineering, Hubei Engineering University, Xiaogan; Hubei; 432000, China; (2) Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan; 430074, China

Corresponding author:Xiao, Yong-Jun(xiaoyongjun2003@126.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847014

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A portable laser-induced breakdown spectroscopy system based on fiber laser was developed to meet the demand of rapid detection in industrial field and rugged environment. A algorithm of background removal based on iterative wavelet transform was used to eliminate the high continuous background interference caused by the high repetition rate of the fiber laser. The emission lines of element Mn in pig iron samples were compared before and after the background removal. After background removal by the iterative wavelet transform algorithm, the determination coefficient of calibration curve for four emission lines of element Mn was improved from 0.988, 0.985, 0.982 and 0.992, to 0.994, 0.994, 0.994 and 0.995, respectively, and the root-mean-square error of cross-validation was decrease from 0.123, 0.146, 0.101 and 0.083, to 0.072, 0.085, 0.062 and 0.073, respectively. The results show that the algorithm of iterative wavelet transform can effectively remove the continuous background interference, improve the accuracy of regression model, and then improve the accuracy of quantitative analysis.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:28

Main heading:Wavelet transforms

Controlled terms:Atomic emission spectroscopy - Chemical analysis - Electromagnetic wave emission - Fiber lasers - Iterative methods - Laser induced breakdown spectroscopy - Mean square error - Regression analysis - Spectrum analysis

Uncontrolled terms:Background removal - Calibration curves - Determination coefficients - High repetition rate - Industrial fields - Root mean square errors - Rugged environments - Wavelet transform algorithms

Classification code:711  Electromagnetic Waves - 744.4  Solid State Lasers - 921.3  Mathematical Transformations - 921.6  Numerical Methods - 922.2  Mathematical Statistics - 931.1  Mechanics

DOI:10.3788/gzxb20184708.0847014

Funding Details: Number; Acronym; Sponsor: 11647122; NSFC; National Natural Science Foundation of China - Number; Sponsor: 2018CFB672; Natural Science Foundation of Hubei Province - Number; Sponsor: 2018CFB773; Natural Science Foundation of Hubei Province - Number; Acronym; Sponsor: 61705064; NSFC; National Natural Science Foundation of China - Number; Sponsor: B2016183; Hubei Provincial Department of Education

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 27>

Accession number:20184706112773

Title:Clock Homologus I/Q Demodulation in Phase Sensitive Optical Time-Domain Reflection System

Authors:Liu, Min-Han (1); Wang, Xu (1); Yu, Miao (1); Fu, Qun-Jian (1); Chang, Tian-Ying (1); Zhang, Jin (1); Cui, Hong-Liang (1)

Author affiliation:(1) College of Instrumentation &amp; Electrical Engineering, Jilin University, Changchun; 130012, China

Corresponding author:Chang, Tian-Ying(tchang@jlu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0806003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A phase sensitive optical time domain reflection system demodulation method based on clock homologous I/Q demodulation is proposed. The influence of the non-homologous disagreement between the modulation signal and the mixing signal on the demodulation results is analyzed. The method using clock homologous modulation signal of the acoustic optical modulator, the chopper signal and the I/Q mixing signal is adopted to eliminate the influence of the residual frequency. Double piezoelectric ceramic is used as the disturbance source, and the amplitude and phase of the backward Rayleigh scattering light can be obtained in real time by I/Q demodulation, so as to achieve the location and reduction of the disturbance. The experimental results show that the system can detect the sinusoidal disturbances at 5 km and 9 km effectively, and the signal to noise ratio of the positioning signal is up to 17.8 dB and 16 dB, respectively. The phase demodulation results accurately restore the sinusoidal disturbance, and the fitting coefficients of the sinusoidal curves are 0.994 and 0.991 respectively, and the root mean square error is 0.116 and 0.141, respectively. Furthermore, the experiment verifies that the method can measure the phase sine curve under different disturbance amplitudes. The different disturbance frequencies can be obtained accurately, and the phase change amplitude at disturbance location has a good linear relationship with the disturbance intensity. The linear fitting coefficient is 0.992, and the root mean square error is 0.499, both are better than the non-homologous demodulation result.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Time domain analysis

Controlled terms:Clocks - Curve fitting - Demodulation - Fiber optic sensors - Light modulators - Mean square error - Mixing - Modulation - Optical signal processing - Optical variables measurement  - Piezoelectric ceramics - Signal to noise ratio

Uncontrolled terms:Acoustic-optical modulators - Disturbance amplitudes - Fiber Sensor - Optical time domain reflection - Residual frequency - Root mean square errors - Sinusoidal disturbances - Time domain systems

Classification code:708.1  Dielectric Materials - 716.1  Information Theory and Signal Processing - 741.1.2  Fiber Optics - 802.3  Chemical Operations - 921  Mathematics - 921.6  Numerical Methods - 922.2  Mathematical Statistics - 941.4  Optical Variables Measurements - 943.3  Special Purpose Instruments

Numerical data indexing:Decibel 1.60e+01dB, Decibel 1.78e+01dB, Size 5.00e+03m, Size 9.00e+03m

DOI:10.3788/gzxb20184708.0806003

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 28>

Accession number:20184706112759

Title:Consensus Modeling for Qualitative Analysis of Heavy Metal Cu in Tegillarca Granosa by LIBS Approach

Authors:Guo, Zhen-Zhu (1); Chen, Xiao-Jing (1); Yuan, Lei-Ming (1); Chen, Xi (1); Zhu, De-Hua (1); Yang, Shuo (1)

Author affiliation:(1) College of Mathematics, Physics and Electronic Information Engineering, Wenzhou University, Wenzhou; Zhejiang; 325035, China

Corresponding author:Yuan, Lei-Ming(yuan@wzu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847015

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to rapidly detect the heavy metal pollution in shellfish, the contents of heavy metal copper in tegillarca granosa were predicted by Laser-induced Breakdown Spectroscopy (LIBS) combined with the consensus strategy of mulit-models. By analysis of LIBS copper characteristic spectral lines, the characteristics of copper peak intensity, area, peak ratio of copper's peaks, were extracted, and multivariate linear regression models were developed respectively. Besides, partial least regression model was calibrated based on copper characteristic spectra region. Among the residual vectors of these calibration member models, the Lagrange multiplier method was used to optimize the linear combination between these member models, aiming at reducing the correlation between member models and minimizing the mean squared error of the consensus model. Through external validation from the prediction set, the consensus model was performed better than that of any member models, with the root mean square prediction error of 20.641 mg/kg, as well as the correlation coefficient of 0.835, and the prediction deviation was only -0.473. Results show that the LIBS technology combined with the consensus model can be used for the quantitative detection of heavy metals of aquatic products.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Heavy metals

Controlled terms:Atomic emission spectroscopy - Copper - Forecasting - Lagrange multipliers - Laser induced breakdown spectroscopy - Mean square error - Regression analysis

Uncontrolled terms:Aquatic products - Characteristic spectral lines - Consensus models - Lagrange multiplier method - Laserinduced breakdown spectroscopy (LIBS) - Multivariate linear regression model - Quantitative detection - Root-mean-square predictions

Classification code:531  Metallurgy and Metallography - 544.1  Copper - 922.2  Mathematical Statistics - 931.1  Mechanics

DOI:10.3788/gzxb20184708.0847015

Funding Details: Number; Acronym; Sponsor: 31571920; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61705168; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 29>

Accession number:20184706112768

Title:Goos-H?nchen and Imbert-Fedorov Displacements across the Interface of Topological Insulator and Chiral Metamaterials

Authors:Tang, Long (1); Zeng, Ran (1, 2); Li, Qi-Liang (1); Bi, Mei-Hua (1); Yang, Guo-Wei (1); Yang, Ya-Ping (2)

Author affiliation:(1) School of Communication Engineering, Hangzhou Dianzi University, Hangzhou; 310018, China; (2) MOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University, Shanghai; 200092, China

Corresponding author:Zeng, Ran(zengran@hdu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0826002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The Goos-H&auml;nchen(GH) lateral displacement and Imbert-Fedorov(IF) transverse displacement of a linear polarized wave at the interface of topological insulator and chiral metamaterial was investigated. Based on the modified energy flux method, the expressions of the spatial shifts were derived, and the relations between the shifts and the incident angle, topological magnetoelectric coupling effect, chiral parameter were also numerically discussed. It is found that, for a linear polarized TE beam, the magnetoelectric couplin effect of the topological insulator or the chirality of the chiral medium has consistent influence on both the two shifts, that is, the topological magnetoelectric coupling can generally suppress both the GH and IF shifts, and the chirality may monotonously enhance or suppress both the two shifts. When gradually enhancing the topological magnetoelectric polarizability, the GH and IF shifts of the linear polarized TM incident wave will be firstly increased, and then it will be suppressed. There exists an extreme displacement. The increase of chiral parameters makes this extreme displacement move towards the smaller value of the magnetoelectric polarizability; Although the influence of chiral parameters on the shifts is generally monotonic, but it is special in certain cases, for example, in case of the GH shift of a right-handed circularly polarized wave, during the period when the topological magnetoelectric coupling increases the shifts, the chirality will also show the enhancement, while in the stage of shift suppression by topological effect, the chirality may suppress the shifts in the meantime. The research on the GH and IF shifts at the interface of topological insulator and chiral metamaterials may develop a new way to control the GH and IF shifts. It also provides an optical method for measuring the topological magnetoelectric coupling and chiral electromagnetic cross-polarization.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:24

Main heading:Topology

Controlled terms:Chirality - Electric insulators - Metamaterials - Polarization

Uncontrolled terms:Chiral metamaterials - Circularly polarized waves - Imbert-Fedorov shifts - Internal reflections - Lateral displacements - Magnetoelectric couplings - Topological insulators - Transverse displacements

Classification code:921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory - 931.3  Atomic and Molecular Physics - 951  Materials Science

DOI:10.3788/gzxb20184708.0826002

Funding Details: Number; Acronym; Sponsor: 11574068; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61501157; NSFC; National Natural Science Foundation of China - Number; Sponsor: LQ16F050004; Natural Science Foundation of Zhejiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 30>

Accession number:20184706112763

Title:Tailoring the Performance of Semitransparent Organic Solar Cells by Tandem One-dimensional Photonic Crystals

Authors:Liang, Wen-Yue (1, 2); Zhong, Jin-Yao (2); Xu, Hai-Tao (2); Deng, Hai-Dong (2); Wang, Qi-Sheng (1); Long, Yong-Bing (2)

Author affiliation:(1) Schoolof Electronic Engineering, South China Agricultural University, Guangzhou; 510642, China; (2) Schoolof Mathematics and Computational Science, Wuyi University, Jiangmen; Guangdong; 529020, China

Corresponding author:Long, Yong-Bing(yongbinglong@126.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0823003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Tandem One-Dimensional Photonic Crystals (1DPCs) are employed to improve the photovoltaic conversion efficiency of the semitransparent organic solar cells and tailor the see-though colors of the devices. Transfer matrix method is employed to calculate the absorption in the active layer and transmission spectra of the devices. With these calculated data as inputs, the photovoltaic conversion efficiency and the see-though colors are calculated. It is revealed that an improvement of 24.4% in the photovoltaic conversion efficiency is achieved by tailoring the center wavelength of the bandgap of the top 1DPCs and bottom 1DPCs in the tandem 1DPCs. In addition, the see-through colors of the device can be tuned by tailoring the center wavelength of the bandgap of the top 1DPCs and bottom 1DPCs. Correspondingly, semitransparent organic solar cells with different see-through colors such as blue, green and red can be obtained. Compared with the single 1DPCs, tandem 1DPCs can lead to higher improvement in PCE and broader tunable range of the see-through color of the devices.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Solar cells

Controlled terms:Color - Conversion efficiency - Efficiency - Energy gap - Organic solar cells - Photonic crystals - Solar power generation - Transfer matrix method

Uncontrolled terms:Active Layer - Center wavelength - One dimensional photonic crystal - Photovoltaic conversion - Semitransparent - Transmission spectrums

Classification code:525.5  Energy Conversion Issues - 615.2  Solar Power - 702.3  Solar Cells - 741.1  Light/Optics - 913.1  Production Engineering - 921  Mathematics

Numerical data indexing:Percentage 2.44e+01%

DOI:10.3788/gzxb20184708.0823003

Funding Details: Number; Acronym; Sponsor: 11774099; NSFC; National Natural Science Foundation of China - Number; Sponsor: 201607010176; Guangzhou Municipal Science and Technology Project - Number; Sponsor: 2016A03031339; Natural Science Foundation of Guangdong Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 31>

Accession number:20184706112760

Title:Lattice Boltzmann Simulation of Laser-induced Transfer of Liquid

Authors:Huang, Ya-Jun (1, 2); Cai, Wen-Lai (1, 2); Chen, Ying-Huai (1, 2); Huang, Zhi-Gang (1, 2)

Author affiliation:(1) School of Electro-mechanical Engineering, Guangdong University of Technology, Guangzhou; 510006, China; (2) Guangzhou Key Laboratory of Nontraditional Macining and Equipment, Guangzhou; 510006, China

Corresponding author:Huang, Zhi-Gang(huangzg@gdut.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847016

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The mesoscopic lattice Boltzmann method and the gas-liquid two-phase flow model are used to simulate the Laser-induced Forward Transfer (LIFT) of liquid. Rayleigh-Plesset equation is introduced to calculate the evolution of the plasma bubble, so as to obtain the inlet boundary conditions for the two-phase LBM model of the LIFT. The simulation results agree well with former experimental observations. The evolution of bubble shape, the forward and backward ejections are all faithfully represented, which suggests that the dynamics of the laser-induced bubble is mainly responsible for the material transfer in LIFT. The forward liquid ejection is related to the fast expansion of the laser-induced bubble, while the backward ejection is caused by the collapse of the bubble.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:22

Main heading:Two phase flow

Controlled terms:Bubbles (in fluids) - Computational fluid dynamics - Computer simulation - Drop formation - Kinetic theory - Laser produced plasmas - Liquids - Mass transfer - Numerical methods

Uncontrolled terms:Gas - liquid two-phase flows - Laser induced bubbles - Laser induced forward transfer - Laser induced plasma - Lattice Boltzmann method - Lattice Boltzmann simulations - Rayleigh-Plesset equation - Two phase flow model

Classification code:631.1  Fluid Flow, General - 631.1.2  Gas Dynamics - 641.3  Mass Transfer - 723.5  Computer Applications - 744.9  Laser Applications - 921.6  Numerical Methods - 931.2  Physical Properties of Gases, Liquids and Solids

DOI:10.3788/gzxb20184708.0847016

Funding Details: Number; Acronym; Sponsor: 11172072; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51175091; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 32>

Accession number:20184706112752

Title:Two-dimensional Elemental Mapping and Analysis of Natural Jade by Reheating Orthogonal Dual-pulse Laser-induced Breakdown Spectroscopy

Authors:Zhuang, Er-Tian (1); Kang, Juan (1); Wang, Ya-Rui (1); Li, Run-Hua (1); Chen, Yu-Qi (1)

Author affiliation:(1) School of Physics and Optoelectronics, South China University of Technology, Guangzhou; 510641, China

Corresponding author:Chen, Yu-Qi(chenyuqi@scut.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847008

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to analyze and detect the elemental distribution of natural jade sample surface, reheating orthogonal dual-pulse laser-induced breakdown spectroscopy was adopted to obtain two-dimensional (2D) surface elemental mapping of jade sample. The influence of time interval between two pulses to the signal intensities and signal to background ratio was studied experimentally. Variation relationship between spectral intensity and pulse energy of the reheating laser was discussed. Under optimized experimental condition, the surface scanning analysis of the natural jade within the scope of 36 mm&times;10 mm was implemented. With the lateral resolution of 30 microns, 2D distribution mapping of trace element iron was obtained. It was demonstrated that reheating orthogonal dual-pulse laser-induced breakdown spectroscopy technique was able to be applied to realize the detection of trace element in natural jade and improve detection sensibility which was helpful for jade identification. This surface elemental mapping technique could be used to achieve the analysis of component distribution of jade and other solid samples which will have nice application prospects.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Spectrum analysis

Controlled terms:Atomic emission spectroscopy - Industrial heating - Laser induced breakdown spectroscopy - Mapping - Silicate minerals - Spectroscopy - Trace elements

Uncontrolled terms:Component distributions - Dual-pulses - Elemental distribution - Elemental mapping - Experimental conditions - Signal-to-background ratio - Surface scanning analysis - Two Dimensional (2 D)

Classification code:405.3  Surveying - 482.2  Minerals - 642.1  Process Heating - 931.1  Mechanics

DOI:10.3788/gzxb20184708.0847008

Funding Details: Number; Acronym; Sponsor: 11274123; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11304100; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 33>

Accession number:20184706112776

Title:Large Dynamic Range Radiation Standard Transmission Research Based on Integrating Sphere Source

Authors:Liu, Hui (1, 2); Chen, Hong-Yao (1); Li, Jia-Wei (1); Bao, Shi-Wei (1, 2); Yang, Bao-Yun (1); Zhang, Li-Ming (1)

Author affiliation:(1) Key Laboratory of Optical Calibratin and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei; 230031, China; (2) University of Science and Technology of China, Hefei; 230026, China

Corresponding author:Zhang, Li-Ming(lmzhang@aiofm.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0804002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Due to the wide spectrum range and the good performance of exit surface uniformity and angle uniformity, integrating sphere is close to the ideal Lambert uniform light source. In this paper, the principle of large dynamic range radiation standard transmission based on integrating sphere light source was proposed. That is to say, under the premise of equal color temperature adjustment, a monitoring radiometer based on a linear silicon detector with a large dynamic range response, and an adjustable aperture can transfer the spectral radiance working standards of the irradiance standard lamp-solar diffuser system to a large dynamic range adjustable integral sphere light source. Thus, the dynamic range of radiation standards can be expanded. Herein, we prepared a large dynamic adjustable aperture and further discussed the spectral matching and the impact of silicon detector nonlinearity on the accuracy of radiation standard transmission. Finally, in spectrum range of 400~2 500 nm, the uncertainty of 6 orders of magnitude radiation standard is 4.3%~6.1% in integrating sphere source. It is of great significance to the quantitative development of radiometric.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:23

Main heading:Plasma diagnostics

Controlled terms:Calibration - Diffusers (optical) - Light sources - Radiometry - Silicon detectors - Spheres

Uncontrolled terms:Adjustable aperture - Integrating spheres - Irradiance standards - Orders of magnitude - Radiation standards - Radiometric calibrations - Spectral matchings - Uncertainty

Classification code:741.3  Optical Devices and Systems - 932.3  Plasma Physics - 944.7  Radiation Measuring Instruments - 944.8  Radiation Measurements

Numerical data indexing:Size 4.00e-07m to 2.50e-06m

DOI:10.3788/gzxb20184708.0804002

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 34>

Accession number:20184706112779

Title:Preparation and Properties of Large Gap Ge-S-I Chalcogenide Glass

Authors:Jiao, Kai (1, 2); Chen, Peng (1, 2); Xue, Zu-Gang (1, 2); Tian, You-Mei (1, 2); Si, Nian (1, 2); Wang, Xian-Ge (1, 2); Zhao, Zhe-Ming (3); Wang, Xun-Si (1, 2); Dai, Shi-Xun (1, 2); Nie, Qiu-Hua (1, 2)

Author affiliation:(1) Research Institute of Advanced Technology, College of Information, Ningbo University, Ningbo; Zhejiang; 315211, China; (2) Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo; Zhejiang; 315211, China; (3) Nanhu College, Jiaxing University, Jiaxing; Zhejiang; 314001, China

Corresponding author:Zhao, Zhe-Ming(zhaozheming_27@sina.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0816003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to investigate the effects of iodine on the properties of two series of glasses with poor S-based (GeS<inf>1.5</inf>)<inf>100-</inf><inf>x</inf>I<inf>x</inf> and (GeS<inf>2</inf>)<inf>100-</inf><inf>x</inf>I<inf>x</inf> (x= 5,10,20,30,40), two series of glass samples were prepared by rapid vacuum and high temperature melt quenching. The density, near infrared absorption spectra, transmission spectra, refractive index, optical band gap and thermal expansion were measured and compared. Based on the measured refractive index data, the zero-dispersion point of the material was calculated. The results show that with the addition of iodine, the blue shift is observed in the near-infrared absorption cut-off wavelength, and the glass transition temperature and softening temperature decrease obviously. The transition temperature ranges of the two series are kept near 222~330&#8451; and 236~332&#8451;, the soften temperature ranges from 267&#8451; to 375&#8451; and 282&#8451; to 364&#8451;, respectively, the expansion coefficient, infrared transmittance and the optical band gap gradually increased. The actual composition of the glass was measured by scanning electron microscopy, and the loss of iodine in the glass raw material was compared with or without liquid nitrogen cooling in process of vacuuming, which shows that the impurity absorption peak intensity in the glass will be enhanced with liquid nitrogen cooling. The glass preparation and purification processes were optimized. Finally, the (GeS<inf>1.5</inf>)<inf>60</inf>I<inf>40</inf> glass covered by high temperature polymer was drawn and its loss was measured, which is 2.8 dB/m.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Glass transition

Controlled terms:Absorption cooling - Dispersion (waves) - Energy gap - Expansion - Fourier transform infrared spectroscopy - Germanium compounds - Glass - Infrared absorption - Infrared devices - Iodine  - Light absorption - Liquid nitrogen - Optical band gaps - Refractive index - Scanning electron microscopy - Temperature - Thermal expansion

Uncontrolled terms:Chalcohalide glass - Far infrared - High temperature melts - High temperature polymers - Liquid-nitrogen cooling - Material dispersions - Near-infrared absorption - Transmission spectrums

Classification code:641.1  Thermodynamics - 641.2  Heat Transfer - 711  Electromagnetic Waves - 741.1  Light/Optics - 801  Chemistry - 802.3  Chemical Operations - 804  Chemical Products Generally - 804.2  Inorganic Compounds - 812.3  Glass - 951  Materials Science

DOI:10.3788/gzxb20184708.0816003

Funding Details: Number; Acronym; Sponsor: 61377099; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61627815; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61705091; NSFC; National Natural Science Foundation of China - Number; Sponsor: LR18F050002; Natural Science Foundation of Zhejiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 35>

Accession number:20184706112781

Title:The Influence of Mg Doping Amount on the Property of Zn<inf>1-</inf><inf>x</inf>Mg<inf>x</inf>O Buffer Layer and Its Application in Cu(In,Ga)Se<inf>2</inf> Solar Cells

Authors:Wu, Wen-Wen (1); Shen, Hong-Lie (1, 2); Chen, Jie-Yi (1); Shang, Hui-Rong (1); Sun, Luan-Hong (1); Gao, Kai (1); Li, Yu-Fang (1, 2)

Author affiliation:(1) Jiangsu Key Laboratory of Materials and Techology for Energy Conversion, College of Materials Science and Techology, Nanjing University of Aeronautics and Astronautics, Nanjing; 211106, China; (2) State Key Laboratory of Advanced Technology for Float Glass, Bengbu Design &amp; Research Institute for Glass Industry, Bengbu; Anhui; 233018, China

Corresponding author:Shen, Hong-Lie(hlshen@nuaa.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0831002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Zn<inf>1-</inf><inf>x</inf>Mg<inf>x</inf>O thin films have been prepared by sol-gel spin-coating technique instead of the CdS buffer layers synthesized by conventional chemical bath deposition for Cu(In,Ga)Se<inf>2</inf> (CIGS) solar cells. The effects of Mg doping amount on the structural, morphological, optical properties of Zn<inf>1-</inf><inf>x</inf>Mg<inf>x</inf>O films and band alignment of Zn<inf>1-</inf><inf>x</inf>Mg<inf>x</inf>O/CIGS are investigated by X-ray diffraction, Atmoic force microscope, UV-vis-NIR spectroscopy and X-ray photoelectron spectroscopy. The results show that these properties changed with the increase of Mg. All the films are amorphous. The surface morphology changes from stripe to hexagon nanoparticles and the surface roughness decreases from 23.53 nm to 1.14 nm. The optical band gap increases from 3.55 eV to 3.62 eV and conduction band offsets changes from +0.68 eV to -0.33 eV. Accordingly, the band alignment of Zn<inf>1-</inf><inf>x</inf>Mg<inf>x</inf>O/CIGS changes from "spike-like" to "cliff-like". An efficiency of up to 5.83% is achieved for a CIGS solar cell with a Zn<inf>1-</inf><inf>x</inf>Mg<inf>x</inf>O (using a molar ratio 0.1 of the Mg source and the Zn source in the precusor solution) buffer layer, which is attributed to the optimized conduction band offset of +0.22 eV at the Zn<inf>1-</inf><inf>x</inf>Mg<inf>x</inf>O/CIGS interface.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:24

Main heading:Zinc compounds

Controlled terms:Amorphous films - Band structure - Buffer layers - Cadmium sulfide - Conduction bands - Copper compounds - Deposition - Energy gap - II-VI semiconductors - Magnesium  - Near infrared spectroscopy - Optical properties - Optical waveguides - Semiconductor doping - Sol-gel process - Solar cells - Surface roughness - Thin films - X ray photoelectron spectroscopy

Uncontrolled terms:Chemical-bath deposition - CIGS solar cells - Conduction band offset - ITS applications - Precusor solutions - Sol-gel spin coating - UV-vis-NIR spectroscopy - Zn1-xMgxO

Classification code:542.2  Magnesium and Alloys - 702.3  Solar Cells - 712.1  Semiconducting Materials - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 802.3  Chemical Operations - 804  Chemical Products Generally - 812.3  Glass - 931.2  Physical Properties of Gases, Liquids and Solids - 932.1  High Energy Physics - 933  Solid State Physics

Numerical data indexing:Electron_Volt -3.30e-01eV, Electron_Volt 3.55e+00eV to 3.62e+00eV, Percentage 5.83e+00%, Size 2.35e-08m to 1.14e-09m

DOI:10.3788/gzxb20184708.0831002

Funding Details: Number; Acronym; Sponsor: 61774084; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 36>

Accession number:20184706112748

Title:Effect of Moisture Content on Laser-induced Rock Cuttings Plasma Properties

Authors:Jia, Jun-Wei (1, 2); She, Ming-Jun (3); Fu, Hong-Bo (1); Wang, Hua-Dong (1, 2); Ni, Zhi-Bo (1); Dong, Feng-Zhong (1, 2)

Author affiliation:(1) Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences, Hefei; 230031, China; (2) University of Science and Technology of China, Hefei; 230026, China; (3) Mud Logging Company of Zhongyuan Petroleum Engineering Co.,Ltd., Puyang; Henan; 457001, China

Corresponding author:Dong, Feng-Zhong(fzdong@aiofm.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:By preparing seven kinds of rock cutting samples with different moisture content, experiments were conducted to study the effect of moisture content on laser-induced rock cuttings plasma properties and the method for correcting the concentration of each element in different moisture content. The variation of the intensity of the Ca 422.67 nm line with the moisture content of the rock cutting samples was studied. The average plasma temperature under different moisture contents was calculated by the Boltzmann-plot of the four lines of Ca II and Al I. The electron density of the plasma with different moisture contents was obtained by using Lorentz fitting of the Ca 422.67 nm line.The results show that with the increase of moisture content, the spectral intensity, plasma temperature, electron density all decrease linearly and there are also great differences in the quantitative analysis results of the calibration free models for each element, but the laser-induced cuttings plasma with different moisture content all meet the Mc Whirter criterion of local thermodynamic equilibrium and the calibration free model can be used for the analysis and simple correction of moisture content effects.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:19

Main heading:Moisture determination

Controlled terms:Calibration - Carrier concentration - Electron density measurement - Electron temperature - Electrons - Moisture - Plasma devices - Rocks - Temperature

Uncontrolled terms:Calibration free - Different moisture contents - LIBS - Local thermodynamic equilibrium - Plasma properties - Plasma temperature - Rock cutting - Spectral intensity

Classification code:641.1  Thermodynamics - 701.1  Electricity: Basic Concepts and Phenomena - 932.3  Plasma Physics - 944.2  Moisture Measurements

Numerical data indexing:Size 4.23e-07m

DOI:10.3788/gzxb20184708.0847004

Funding Details: Number; Acronym; Sponsor: 41775128; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61505223; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 37>

Accession number:20184706112745

Title:Laser-induced Molecular Spectroscopy for Carbon with Different Element Speciation

Authors:Dong, Mei-Rong (1, 2); Long, Jia-Jian (1, 2); Chen, Si-Ru (1); Wei, Li-Ping (1, 2); Li, Wen-Bing (1, 2); Chen, Wei-Kun (1); Chen, Shi-Kai (1); Yu, Jian-Hua (1, 2); Lu, Ji-Dong (1, 2)

Author affiliation:(1) School of Electric Power, South China University of Technology, Guangzhou; 510640, China; (2) Guangdong Province Engineering Research Center of High Efficient and Low Pollution Energy Conversion, Guangzhou; 510640, China

Corresponding author:Lu, Ji-Dong(jdlu@scut.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:8

Issue date:August 1, 2018

Publication year:2018

Article number:0847001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Organic carbon (C<inf>6</inf>H<inf>7</inf>O<inf>2</inf>) and carbonate carbon (CaCO<inf>3</inf>) with different carbon concentration were selected as the model samples to perform laser induced breakdown spectroscopy experiments. The excitation characteristics of carbon with different forms were analyzed in air atmosphere. The results showed that carbon atomic emissions could be detected from carbonate carbon, which had a good linear relationship with the carbon content. But it is difficult to detect the molecular carbon. For organic samples, not only the atomic carbon could be detected, but also can detect the molecular carbon (CN and C<inf>2</inf>), and the molecular emissions had a good correlation with carbon content. The results indicated that the formation of molecular carbon is related with the organic form. After mixing the two forms of samples, it is found that there is a good correlation between the molecular CN and the organic carbon content, which indicated that the molecular CN could be used to realize the identification of organic carbon form. On the other hand, according to the formation route of molecular CN, a certain amount of nitrogen was added to the mixed samples with two forms of carbon, performed under the Ar atmosphere, it was also found that there exist the good linear relationship between the molecular CN and the organic carbon content. All the measurements showed that either the nitrogen from the air or from the sample itself could be both used for the identification of carbon from the organic forms.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:37

Main heading:Organic carbon

Controlled terms:Atomic emission spectroscopy - Calcite - Calcium carbonate - Carbon nitride - Carbonation - Molecular spectroscopy - Nitrogen - Organic lasers - Spectroscopy

Uncontrolled terms:Carbon concentrations - Element speciations - Excitation characteristics - Laserinduced breakdown spectroscopy (LIBS) - Linear relationships - Molecular carbons - Molecular emissions - Organic carbon contents

Classification code:744.1  Lasers, General - 802.2  Chemical Reactions - 804  Chemical Products Generally

DOI:10.3788/gzxb20184708.0847001

Funding Details: Number; Sponsor: 2017B030311009; Natural Science Foundation of Guangdong Province - Number; Acronym; Sponsor: 51406059; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51476061; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

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