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2017年46卷8期30篇论文

<RECORD 1>

Accession number:20173504083791

Title:MgO&#8758;LN Electro-optic Crystal Cavity-dumped Nd&#8758;YAG Laser for Short Pulse Width and High Peak Power at 1 kHz

Authors:Lu, Yi-Xin (1); Bai, Yang (1); Bai, Bing (1); Bai, Jin-Tao (1)

Author affiliation:(1) Institute of Photonics and Photo-Technology, Shaanxi Engineering Technology Research Center for All Solid State Laser and Application, Northwest University, Xi'an; 710069, China

Corresponding author:Bai, Yang(by@nwu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0814001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An electro-optic cavity-dumped 1064 nm solid state laser with short pulse duration and high peak power at 1 kHz repetition rate was proposed. The Nd&#8758;YAG crystal was side-pumped by an 808 nm pulsed laser diode in a folded biconcave cavity. Transverse voltage addition cavity dumping mechanism realized with a synchronously delayed MgO&#8758;LN crystal was used to generate laser pulses. Output pulses with maximum pulse energy and peak power up to 46.7 mJ and 11.5 MW were obtained, corresponding to 200 Hz repetition rate and 4.06 ns pulse duration at 1 064 nm. Peak to peak instabilities of pulse width and pulse energy were &plusmn;1.52% and &plusmn;2.02%. At the highest repetition rate of 1 kHz, the measured pulse energy, peak power and pulse duration were 18.3 mJ, 3.69 MW and 5.02 ns. Peak to peak instabilities of pulse duration and pulse energy were &plusmn;2.75% and &plusmn;3.52%, corresponding to the beam quality factors of 3.849 and 3.868, far field divergence angles of 3.46 mrad and 3.55 mrad, and waist spot diamete of 1 508.84 &mu;m and 1 477.30 &mu;m respectively. &copy; 2017, Science Press. All right reserved.

Number of references:19

Main heading:Pulse repetition rate

Controlled terms:Electrooptical devices - Laser resonators - Magnesia - Optical pumping - Pulsed lasers - Pumping (laser) - Solid state lasers

Uncontrolled terms:Beam quality factor - Cavity dumping - Electrooptic crystals - Far-field divergence angle - High peak power - Pulse durations - Short pulse duration and high peak power - Short pulse width

Classification code:714  Electronic Components and Tubes - 744  Lasers - 804.2  Inorganic Compounds

Numerical data indexing:Energy 1.83e-02J, Energy 4.67e-02J, Frequency 1.00e+03Hz, Frequency 2.00e+02Hz, Power 1.15e+07W, Power 3.69e+06W, Size 1.06e-06m, Size 4.77e-04m, Size 5.09e-04m, Size 8.08e-07m, Time 4.06e-09s, Time 5.02e-09s

DOI:10.3788/gzxb20174608.0814001

Funding Details: Number; Acronym; Sponsor: 61205114; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 2>

Accession number:20173504083786

Title:Analysis of Optical Properties of Metal - Dielectric Microplate Array Infrared Absorber

Authors:Wei, Dong (1); Zhang, Gui-Zhong (1); Ding, Xin (1); Yao, Jian-Quan (1)

Author affiliation:(1) Key Lab of Optoelectronic Information Technology of the Ministry of Education, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin; 300072, China

Corresponding author:Zhang, Gui-Zhong(johngzhang@tju.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0823005

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A reflective-type infrared filter is proposed based on a two-dimensional periodic micro-structure of circular aluminum disc-circular silica disc-aluminum substrate. Its infrared spectral reflectance is numerically simulated by finite element method. The simulated results show that this micro-structure exhibits excellent spectral filtering over 4~11 &mu;m spectral range which is tunable, insensitive to TE or TM polarization and incident angles over 0 to 60&deg;. The extraordinary infrared reflectance is deciphered with the plasmon polariton resonance theory, upon which a multilayered nanoring structure is proposed for further tuning to longer wavelengths and better absorption efficiency. &copy; 2017, Science Press. All right reserved.

Number of references:19

Main heading:Finite element method

Controlled terms:Aluminum - Infrared detectors - Infrared radiation - Metamaterials - Microstructure - Optical properties - Phonons - Photons - Plasmons - Quantum theory  - Reflection

Uncontrolled terms:Absorber - Absorption efficiency - Aluminum substrate - Coupled plasmon - Infrared reflectance - Nano-ring structures - Plasmon polariton resonances - Spectral filtering

Classification code:541.1  Aluminum - 741.1  Light/Optics - 921.6  Numerical Methods - 931.3  Atomic and Molecular Physics - 931.4  Quantum Theory; Quantum Mechanics - 944.7  Radiation Measuring Instruments - 951  Materials Science

Numerical data indexing:Size 4.00e-06m to 1.10e-05m

DOI:10.3788/gzxb20174608.0823005

Funding Details: Number; Acronym; Sponsor: 11674242; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 11674243; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 3>

Accession number:20173504083804

Title:Raman Spectroscopy System for Non-invasive Blood Glucose Detection

Authors:Zheng, Yi (1, 2); Zhu, Xiang-Ping (1); Nie, Rong-Zhi (1, 2, 3); Gao, Fei (1); Cui, Xiao-Xia (1); She, Jiang-Bo (1); Peng, Bo (1)

Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Science, Xi'an Jiaotong University, Xi'an; 710049, China

Corresponding author:Peng, Bo(bpeng@opt.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0812005

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A miniature wearable Raman spectroscopy system used to achieve noninvasive detection of human blood glucose level was developed. A thallium-doped grin lens was employed as the collection lens and a specially designed wearable fiber optic probe was employed to help the stable and convenient collection of Raman spectrum. The glucose solution, 11 rats and 10 healthy human were studied as subjects. In addition, a method of quantitative analysis of Raman spectrum was proposed which using the peak area as the main reference factor while the peak intensity as the auxiliary reference factor to calculate the target concentration. A non-linearized multivariate dominant factor-based partial least squares model was built for different samples to predict glucose level. The results show that the accuracy are 98.1%, 89.3% and 84.4% for glucose solution, rats and human subjects. The system has the advantages of more compact structure, lower cost, better testing stability and convenient for human body to wear, and is feasible and repeatable to achieve the noninvasive detection of human blood glucose accurately. &copy; 2017, Science Press. All right reserved.

Number of references:21

Main heading:Glucose

Controlled terms:Blood - Least squares approximations - Nondestructive examination - Raman scattering - Raman spectroscopy - Rats - Spectrometers - Wearable technology

Uncontrolled terms:Blood glucose - Blood glucose detection - Compact structures - Fiberoptic probes - Glucose solution - Non-invasive detection - Partial least squares models - Target concentrations

Classification code:461.2  Biological Materials and Tissue Engineering - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 804.1  Organic Compounds - 921.6  Numerical Methods

Numerical data indexing:Percentage 8.44e+01%, Percentage 8.93e+01%, Percentage 9.81e+01%

DOI:10.3788/gzxb20174608.0812005

Funding Details: Number; Acronym; Sponsor: 61308086; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 4>

Accession number:20173504083801

Title:Optical Parameters Measurement System for Tissues with On-line Surface Profile Correction

Authors:Zhao, Hui-Juan (1, 2); Yan, Pan-Pan (2); Qi, Cai-Xia (2); Li, Tong-Xin (2); Chen, Wei-Ting (2); Zhao, Kuan-Xin (2); Gao, Feng (1, 2)

Author affiliation:(1) Collage of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin; 300072, China; (2) Tianjin Key Laboratory of Biomedical Detecting Techniques and Instruments, Tianjin; 300072, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0812002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A measurement system for on-line determination of optical properties of tissue with large areas and correction of complex surface profile was developed. First, the three-dimensional surface profile of the tissues was obtained with phase profilometry. According to cosine radiator model, the change of illumination, which was caused by complex surface profile of the tissues, was corrected. Then, diffuse plane was used to replace the phantom in the traditional method, and the absolute optical parameters based on spatial frequency domain measure mode were measured. The absorption coefficient of the tissues was reconstructed using the developed method. Tissues phantoms with height variation less than 29 mm were adopted to verify the method, the relative error of absorption coefficient decreased from 60% to 13% compared to that without correction. &copy; 2017, Science Press. All right reserved.

Number of references:15

Main heading:Tissue

Controlled terms:Frequency domain analysis - Histology - Optical properties - Optical systems - Optical variables control - Parameter estimation - Profilometry

Uncontrolled terms:Absolute measurements - Complex surface - Optical parameter - Phase profilometry - Spatial frequency domains

Classification code:461.2  Biological Materials and Tissue Engineering - 731.3  Specific Variables Control - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 921.3  Mathematical Transformations

Numerical data indexing:Percentage 6.00e+01% to 1.30e+01%, Size 2.90e-02m

DOI:10.3788/gzxb20174608.0812002

Funding Details: Number; Sponsor: 15JCZDJC31800; Natural Science Foundation of Tianjin City - Number; Acronym; Sponsor: 61475115; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61475116; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61575140; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 81371602; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 81401453; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 81571723; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 5>

Accession number:20173504083811

Title:Infrared Weak-Feature Target Tracking Using the Spatial-Temporal Orientation Energy Feature

Authors:Zhang, Le (1, 2); An, Zhi-Yong (1); Hao, Yong-Ping (2); Dai, Qin (2)

Author affiliation:(1) Opto-Electronic Engineering Department, Changchun University of Science and Technology, Changchun; 130022, China; (2) Equipment Engineering Department, Shenyang Ligong University, Shenyang; 100168, China

Corresponding author:An, Zhi-Yong(an_zhiyong@126.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0810001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:For the task of weak-feature target tracking in infrared image sequences, existing methods failed to track the target accurately for lack of information in the target's surface and the interferences from the strong noise in the scene. Focusing on this problem, a particle filter method is proposed by the Spatial-Temporal Orientation Energy (SOE). The method describes the target by using the SOE histogram. The similarity of the SOE histograms between the particles and the target is employed as the observation input to the particle filter. It is noted that the method is high robustness to target illuminated radiation as the SOE feature reflects target dynamics. Experimental results show that the proposed method has good stability to track targets in different scenes and is more effective and adaptive than the traditional grey-scale feature. &copy; 2017, Science Press. All right reserved.

Number of references:15

Main heading:Target tracking

Controlled terms:Clutter (information theory) - Graphic methods - Infrared imaging - Monte Carlo methods

Uncontrolled terms:Energy feature - High robustness - Infrared image sequence - Infrared target - Particle filter - Spatial temporals - Steerable filters - Target dynamics

Classification code:716.1  Information Theory and Signal Processing - 746  Imaging Techniques - 922.2  Mathematical Statistics

DOI:10.3788/gzxb20174608.0810001

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 6>

Accession number:20173504083790

Title:X-ray Backlighting Imaging Bragg Spectrometer for X-ray Diagnosis

Authors:Liu, Li-Feng (1); Xiao, Sha-Li (2); Qian, Jia-Yu (2)

Author affiliation:(1) School of Physics and Electronics Science, Shanxi Datong University, Datong; Shanxi; 037009, China; (2) Key Laboratory of Optoelectronic Technology and System, Ministry of Education, Chongqing University, Chongqing; 400030, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0811003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A novel X-ray backlighting imaging Bragg spectrometer was developed based on the Bragg diffraction theory to study and diagnose the driven symmetry and uniformity of laser radiation, analyse the promote layer motor process of target implosion of Inertial Confinement Fusion. The key component of the imaging system was the spherically bent Quartz Bragg crystal. The imaging simulation of the X-ray backlighting imaging Bragg spectrometer was studied with the ray tracing software SHADOW. The monochrome X-ray backlight imaging experiment using spherically bent Quartz Bragg crystal was used to carried out in the Chinese Academy of Engineering Physics. The imaging plate was obtained the two-dimensional, monochromatic backlight mesh imaging. By analyzing the imaging information of the experiment, the spatial resolution of the imaging Bragg spectrometer was 83 &mu;m. The experiment show that the imaging system was adequate for X-ray backlighting imaging diagnosis. &copy; 2017, Science Press. All right reserved.

Number of references:15

Main heading:Lighting

Controlled terms:Computer software - Image resolution - Imaging systems - Laser theory - Quartz - Ray tracing - Spectrometers

Uncontrolled terms:Chinese academy of engineerings - Imaging experiments - Imaging information - Imaging simulation - Spatial resolution - Spherically bent crystals - Target implosions - X-ray backlighting

Classification code:482.2  Minerals - 723  Computer Software, Data Handling and Applications - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 746  Imaging Techniques

Numerical data indexing:Size 8.30e-05m

DOI:10.3788/gzxb20174608.0811003

Funding Details: Number; Acronym; Sponsor: 10976033; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 7>

Accession number:20173504083784

Title:Design and Fabrication of O Band 8 Channel Flat-top Arrayed Waveguide Grating Based on Silica on Silicon

Authors:Li, Chao-Yi (1, 2); An, Jun-Ming (1, 2); Zhang, Jia-Shun (1); Wang, Liang-Liang (1); Li, Jian-Guang (1); Wang, Hong-Jie (1); Wu, Yuan-Da (1, 2); Yin, Xiao-Jie (1); Wang, Yue (1)

Author affiliation:(1) State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China; (2) College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:An, Jun-Ming(junming@semi.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0823003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An arrayed waveguide grating, which is applied to IEEE 200/400 GbE standard 802.3 bs, is designed and manufactured. The arrayed waveguide grating uses the silica-on-silicon material, which has 2.0% ultra-high refractive index difference, making the less chip size and insertion loss. In addition, in order to obtain a flattened receiving spectrum, the output waveguides are widened and the multimode waveguide structures are used to excite a few of higher order modes. Several patterns are overlaid so that the top of the original Gaussian spectrum is flattened and forms a box-like receiving spectrum. At last, the designed center wavelength of the arrayed waveguide grating is 1 291.10 nm, the channel spacing is 800 GHz, and the device size is 11 mm&times;4 mm. The microchip is manufactured by plasma enhanced chemical vapor deposition and inductively coupled plasma etching. The test results show that, the minimum insertion loss is about -3.3 dB, the crosstalk between adjacent channels is less than -20 dB, and the single channel 1 dB bandwidth ranging from 2.12 nm to 3.06 nm, realizing a good wavelength demultiplexing and flattening effect, and having a certain practical value in the actual optical communication system. &copy; 2017, Science Press. All right reserved.

Number of references:28

Main heading:Waveguides

Controlled terms:Arrayed waveguide gratings - Inductively coupled plasma - Insertion losses - Optical communication - Optical waveguides - Photonic devices - Plasma CVD - Plasma enhanced chemical vapor deposition - Refractive index - Silica  - Waveguide components - Wavelength division multiplexing

Uncontrolled terms:Adjacent channels - Center wavelength - Higher-order modes - Multi-mode waveguides - Output waveguides - Silica on silicon - Spectral response - Wavelength demultiplexing

Classification code:714.3  Waveguides - 717.1  Optical Communication Systems - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 813.1  Coating Techniques - 932.3  Plasma Physics

Numerical data indexing:Decibel -2.00e+01dB, Decibel -3.30e+00dB, Decibel 1.00e+00dB, Frequency 8.00e+11Hz, Percentage 2.00e+00%, Size 2.12e-09m to 3.06e-09m, Size 2.91e-07m

DOI:10.3788/gzxb20174608.0823003

Funding Details: Number; Acronym; Sponsor: 61405188; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61435013; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 8>

Accession number:20173504083809

Title:Experimental Study on Optical Vortex Array with High Quality

Authors:Huang, Su-Juan (1); Zhang, Jie (1); Shao, Wei (1); Zhu, Fu-Quan (1); Wang, Ting-Yun (1)

Author affiliation:(1) Key Laboratory of Special Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai; 200072, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0826002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Combined the optical vortex with computer generated holography, an approach for producing optical vortex array with high quality was proposed. The formation and distribution characteristics of optical vortex array were theoretically discussed, and optical vortex array was produced by numerical simulation. The hologram of optical vortex array was generated by conjugate symmetric extension Fourier computer generated holography. Based on spatial light modulator loaded with holograms, the optical vortex arrays were reconstructed in the experiment. In order to evaluate the generated beams, Mach-Zehnder interference system was adopted. It is very simple and easy to produce the optical vortex array, which provides more complicated light distributions and controllable parameters. The research results may have a potential value in optical micromanipulation, optical communication and other fields. &copy; 2017, Science Press. All right reserved.

Number of references:21

Main heading:Light modulators

Controlled terms:Computer generated holography - Electron holography - Holograms - Holography - Light - Light modulation - Optical communication - Optical signal processing - Physical optics - Vortex flow

Uncontrolled terms:Computer generated holograms - Mach-Zehnder - Optical vortices - Spatial light modulators - Topological charges

Classification code:631.1  Fluid Flow, General - 717.1  Optical Communication Systems - 741.1  Light/Optics - 743  Holography - 743.1  Holographic Techniques

DOI:10.3788/gzxb20174608.0826002

Funding Details: Number; Acronym; Sponsor: 14440500100; STCSM; Science and Technology Commission of Shanghai Municipality - Number; Acronym; Sponsor: 61475098; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 9>

Accession number:20173504083802

Title:A Composite Optical Fiber Transduser for Landslide Monitoring

Authors:Gao, Chao (1); Liu, Bang (1); Guo, Yong-Cai (1); Zhu, Zheng-Wei (2); Liu, Peng (2); Zheng, Yong (2); Liu, Hong-Lin (2)

Author affiliation:(1) Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry, College of Opto-electronic Engineering, Chongqing University, Chongqing; 400030, China; (2) Key Laboratory of New Technology for Construction of Cities in Mountain Area, College of Civil Engineering of Chongqing University, Chongqing; 400045, China

Corresponding author:Liu, Bang(28374643@qq.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0812003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Aimed at the important indicator of deep displacement in landslide body, based on the optical time domain reflection technique, a composite optical fiber transducer was designed to monitor the deep shear displacement. The transducer is composed of square PVC pipe, capillary pipe, optical fiber and mortar. Firstly, the surrounding of 40 mm&times;40 mm&times;500 mm (2.0 mm thick) PVC tube was grooved, and the &Phi;1&times;500 mm steel capillary was placed in the guide groove. Then the fiber was used to penetrate capillary tube. One end of the optical fiber was fixed, and the other end was wound into a bow form. At last, the mortar with diameter of 110 mm was poured outside PVC, so that a cylindrical composite optical fiber transducer was fabricated. The slope model shear test experiment shows the transducer detection accuracy is 1 mm and the maximum measurement range of fiber grating is 40 mm. Study shows that the composite optical fiber transducer has the advantages of high sensitivity, wide measuring range and convenient installation, and can be used for in-situ landslide monitoring and geotechnical engineering structure monitoring effectively. &copy; 2017, Science Press. All right reserved.

Number of references:16

Main heading:Fibers

Controlled terms:Geotechnical engineering - Landslides - Monitoring - Mortar - Optical fiber fabrication - Optical fibers - Polyvinyl chlorides - Shearing - Time domain analysis - Transducers

Uncontrolled terms:Cylindrical composites - Detection accuracy - Displacement - Engineering structures - Landslide monitoring - Optical fiber transducers - Optical time domain reflection - Optical time domain reflectometry

Classification code:409  Civil Engineering, General - 414.3  Mortar (Before 1993, use code 412) - 481  Geology and Geophysics - 604.1  Metal Cutting - 741.1.2  Fiber Optics - 815.1.1  Organic Polymers - 921  Mathematics

Numerical data indexing:Size 1.00e-03m, Size 1.10e-01m, Size 2.00e-03m, Size 4.00e-02m

DOI:10.3788/gzxb20174608.0812003

Funding Details: Number; Acronym; Sponsor: 51178488; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51478066; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 10>

Accession number:20173504083787

Title:Application of Mixed Light Optimization of RGBW-LEDs in Solar Simulation

Authors:Xiong, Chen-Yu (1); Wu, Yu-Xiang (1); Li, Yang (1); Wen, Shang-Sheng (2)

Author affiliation:(1) College of Automation Science and Engineering, South China University of Technology, Guangzhou; 510641, China; (2) State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou; 510640, China

Corresponding author:Wu, Yu-Xiang(xyuwu@scut.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0823006

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:According to the diurnal variation of color temperature and brightness of sunlight, a strategy was proposed to simulate the diurnal variation of color temperature and brightness of sunlight by light mixing of RGBW-LEDs, and the genetic algorithm was used to optimize the color rendering index. The simulation was conducted by Matlab, and the simulation results were validated by the sunlight simulation system based on the Arduino open source platform. The experiment shows that using mixed light based on RGBW-LEDs can accurately simulate the change rule of sunlight' color temperature and brightness, and make LED mixed light have the optimal color rendering property through the optimization of genetic algorithm, so that the correctness and effectiveness of the proposed strategy were verified. The sunlight simulation strategy can be applied to the field of solar simulation and engineering practice for special lighting fields, such as enclosed environment lighting and plant lighting and so on. &copy; 2017, Science Press. All right reserved.

Number of references:26

Main heading:Light emitting diodes

Controlled terms:Color - Genetic algorithms - Lighting - Luminance - MATLAB - Mixer circuits - Mixing - Open systems - Optimization

Uncontrolled terms:Color rendering index - Color rendering properties - Color temperatures - Engineering practices - LED lights - Open source platforms - Simulation strategies - Solar simulation

Classification code:713.3  Modulators, Demodulators, Limiters, Discriminators, Mixers - 714.2  Semiconductor Devices and Integrated Circuits - 741.1  Light/Optics - 802.3  Chemical Operations - 921  Mathematics - 921.5  Optimization Techniques

DOI:10.3788/gzxb20174608.0823006

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 11>

Accession number:20173504083798

Title:Tunable Double Plasmon-Induced Transparency Windowsin Metamaterial Formed by Symmetric Graphene and Split Ring Resonators Structure

Authors:Fan, Tian-Xin (1); Zhang, Hui-Fang (1); Li, Yong (1); He, Ying (1); Wang, Yang (1); Sun, Xue-Mei (2)

Author affiliation:(1) Department of Physics, Shanghai University, Shanghai; 200444, China; (2) Key Lab of Coherent Light, Atomic and Molecular Spectroscopy, College of Physics, Jilin University, Changchun; 130012, China

Corresponding author:Zhang, Hui-Fang(hfzhang1967@shu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0816004

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A Plasmon-Induced Transparency (PIT) metamaterial was proposed comprised of a graphene patch and two pairs of split ring resonators (SRRs) symmetrically. The coupled PIT molecule is termed as dark-bright-dark molecule. By using the finite element method simulation, the PIT metamaterial exhibits double sharp-induced transparency peaks was observed. the PIT windows can be dynamically modulated at the terahertz regime by tuning the Fermi energy in graphene and varying the geometric parameters of the metamaterial. Theoretical calculations show thatthe interaction distance between graphene and two pairs of symmetrically SRRs is 0.5 microns and the graphene Fermi level is 1.5 eV, the optimal double transparent window is obtained.The PIT effects may have some potential applications in nonlinear devices, tunable sensors, switches, and slow light devices. &copy; 2017, Science Press. All right reserved.

Number of references:36

Main heading:Ring gages

Controlled terms:Fermi level - Finite element method - Graphene - Metamaterials - Molecules - Optical resonators - Plasmons - Resonators - Slow light - Transparency

Uncontrolled terms:Finite element method simulation - Induced transparency - Interaction distances - Non-linear devices - Slow-light devices - Split ring resonator - Tera Hertz - Theoretical calculations

Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 761  Nanotechnology - 804  Chemical Products Generally - 921.6  Numerical Methods - 931.3  Atomic and Molecular Physics - 943.3  Special Purpose Instruments - 951  Materials Science

Numerical data indexing:Electron_Volt 1.50e+00eV

DOI:10.3788/gzxb20174608.0816004

Funding Details: Number; Acronym; Sponsor: 11204170; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 12>

Accession number:20173504083805

Title:Large Depth of Field Imaging Technology of Single-lens Based on Discrete Spectral Illumination

Authors:Ding, Zheng-Wei (1); Cheng, Xin-Xin (1); Fan, Guo-Xing (1); Li, Ping (1); Tan, Ye-Qing (1); Gao, Shu-Mei (1)

Author affiliation:(1) Jiangsu Provoncial Research Center of Light Industrial Optoelectronic Engineering and Technology, School of Science, Jiangnan University, Wuxi; Jiangsu; 214122, China

Corresponding author:Gao, Shu-Mei(gaosm@jiangnan.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0812006

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To enlarge the depth of field of single-lens system, discrete spectral illumination approach based on imaging dispersion was proposed. Firstly, the relation between object distance and illuminating wavelength were theoretically derived. Next, numerical simulation using ZEMAX indicates high-resolution images at various focal planes was obtained via an optimized illumination system with corresponding spectral light sources, and the simulation results were consistent with the theoretical analysis. Finally, an image acquisition system using biconvex lens was designed for practical measurement, and a biconvex len with focus of 35 mm was used to experiment. The results show that compared to monochromatic illumination and white light, the depth of field of proposed method is increased respectively by 93.6% and 81.8%, and the resolution ratio is improved by 189.7% and 200.3%. &copy; 2017, Science Press. All right reserved.

Number of references:19

Main heading:Dispersion (waves)

Controlled terms:Computer vision - Imaging techniques - Light sources

Uncontrolled terms:Depth of field - High resolution image - Illumination system - Image acquisition systems - Monochromatic illumination - Object distance - On-line inspection - Resolution ratios

Classification code:723.5  Computer Applications - 746  Imaging Techniques

Numerical data indexing:Percentage 1.90e+02%, Percentage 2.00e+02%, Percentage 8.18e+01%, Percentage 9.36e+01%, Size 3.50e-02m

DOI:10.3788/gzxb20174608.0812006

Funding Details: Number; Acronym; Sponsor: 11647144; NSFC; National Natural Science Foundation of China - Number; Sponsor: BK20130162; Natural Science Foundation of Jiangsu Province

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 13>

Accession number:20173504083794

Title:Characteristics of Enhanced SSFS Based on Cascaded Fiber

Authors:Lou, Yang (1); Wei, Yi-Zhen (1)

Author affiliation:(1) Center for Optical &amp; Electromagnetic Research, College of Optical Science and Engineering, Zhejiang University, Hangzhou; 310058, China

Corresponding author:Wei, Yi-Zhen(yizhenwei@hdu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0814004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A structure was designed that a 10m thulium-doped fiber is cascaded to 3 m large-mode-area photonic crystal fiber, and soliton self-frequency shift was generated by a 400 fs, 1 550 nm light pulse. At the same incident power, solitons in thulium-doped fiber experience more frequency-shift than that in large-mode-area fiber by 100-150 nm (30% on the average). Output spectra of soliton and pump at the end of thulium-doped fiber show that the stimulated radiation from Tm<sup>3+</sup>is generated among 1.8-2.1 &mu;m by residual pump, which results in greater Raman effect and cause the soliton self-frequency shift enhanced. The findings reveal a way to enhance soliton self-frequency shift, and have significance on extension of tunable range of laser based on soliton self-frequency shift. &copy; 2017, Science Press. All right reserved.

Number of references:18

Main heading:Nonlinear optics

Controlled terms:Crystal structure - Fibers - Light - Light sources - Photonic crystal fibers - Solitons - Thulium

Uncontrolled terms:Enhanced effects - Frequency shift - Incident power - Large mode area fiber - Large-mode-area photonic crystal fibers - Soliton self-frequency shift - Spectra of solitons - Thulium-doped fibers

Classification code:547.2  Rare Earth Metals - 741.1  Light/Optics - 741.1.1  Nonlinear Optics - 933.1.1  Crystal Lattice - 951  Materials Science

Numerical data indexing:Percentage 3.00e+01%, Size 1.00e+01m, Size 1.55e-06m, Size 1.80e-06m to 2.10e-06m, Size 3.00e+00m, Time 4.00e-13s

DOI:10.3788/gzxb20174608.0814004

Funding Details: Number; Sponsor: LQ13F050009; Natural Science Foundation of Zhejiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 14>

Accession number:20173504083797

Title:Thermal Stability of Mid-infrared SiO<inf>2</inf>Thin Films Deposited by Dual Ion Beam Sputtering Method

Authors:Shang, Peng (1, 2); Ji, Yi-Qin (1); Zhao, Dao-Ling (3); Xiong, Sheng-Ming (4); Liu, Hua-Song (1); Li, Ling-Hui (4); Tian, Dong (4)

Author affiliation:(1) Tianjin Key Laboratory of Optical Thin Film, Tianjin Jin Hang Institute Technical Physics, Tianjin; 300192, China; (2) State Key Labs of Modern Optical Instrumentation, Zhejiang University, Hangzhou; 310027, China; (3) Shandong Institute of Metrology, Jinan; 250014, China; (4) Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0816003

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:SiO<inf>2</inf>films are deposited on Si and sapphire (&alpha;-Al<inf>2</inf>O<inf>3</inf>) substrates by Dual Ion beam sputtering method. The microstructure, surface morphology, residual stress and optical stability of SiO<inf>2</inf>coating in the wavelength of 0.4~1.2 &mu;m and 3~5 &mu;m are investigated, systematically. The results indicate that the residual stress goes through a local minimum value at ~400&#8451;. There is a close relationship between the optical constant and the surface conditions, residual stress, microstructure of SiO<inf>2</inf>film. As the temperature increases up to 1 000&#8451;, SiO<inf>2</inf>film can keep well thermal stability without notable damage morphology. The result can give some guidance for designing the optical coatings used in harsh environments. &copy; 2017, Science Press. All right reserved.

Number of references:31

Main heading:Ion beams

Controlled terms:Ions - Microstructure - Optical coatings - Residual stresses - Sapphire - Silica - Sputtering - Stability - Thermodynamic stability - Thin films

Uncontrolled terms:Damage morphology - Dual ion beam sputtering - Harsh environment - Infrared windows - Ion-beam sputtering - Optical stability - Surface conditions - Temperature increase

Classification code:482.2.1  Gems - 641.1  Thermodynamics - 741.3  Optical Devices and Systems - 932.1  High Energy Physics - 951  Materials Science

Numerical data indexing:Size 3.00e-06m to 5.00e-06m, Size 4.00e-07m to 1.20e-06m

DOI:10.3788/gzxb20174608.0816003

Funding Details: Number; Acronym; Sponsor: 61405145; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 15>

Accession number:20173504083783

Title:Thickness Estimation Method for Every Functional Layer of QLEDs

Authors:Chen, Wen-Bai (1); Ye, Ji-Xing (1); Ma, Hang (2); Li, Deng-Hua (1, 2)

Author affiliation:(1) School of Automation, Beijing Information Science and Technology University, Beijing; 100101, China; (2) School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing; 100044, China

Corresponding author:Li, Deng-Hua(ldh@bistu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0823002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To balance the carrier injection in Quantum Dot Light Emitting Diode (QLEDs), a method to determine the thickness of each functional layer was proposed. The thickness of EL was set firstly, the thickness of Electron Transport Layer (ETL) was determined through tunneling model. On this basis, the thickness of Hole Injection Layer (HTL) was determined at last using space charge limited current model. Devices using red light CdSe/ZnS quantum dot was used as the Light-Emitting Layer (EL), poly-TPD as the HTL, Alq<inf>3</inf>as the ETL were fabricated through spin-coating and vacuum evaporation with the thickness of each layer obtained from the simulation results. Experiment results show that compared with other devices, the device with a 45 nm thickness of poly-TPD, 25 nm QDs and 35 nm Alq<inf>3</inf>has a higher luminous efficiency and color purity. QLEDs with the thickness of each layer chosen according to the method proposed have a more balanced carrier injection which is advantageous in improving device performance. &copy; 2017, Science Press. All right reserved.

Number of references:20

Main heading:Semiconductor quantum dots

Controlled terms:Carrier transport - Charge injection - Electric conductivity - Electron transport properties - Light emitting diodes - Nanocrystals - Quantum chemistry - Thickness measurement - Vacuum evaporation

Uncontrolled terms:Carrier injection - Electron transport layers - Hole transport layers - Light emitting layers - Quantum-dot light emitting diodes - Space charge limited currents - Tunneling models

Classification code:633.1  Vacuum Applications - 701.1  Electricity: Basic Concepts and Phenomena - 714.2  Semiconductor Devices and Integrated Circuits - 761  Nanotechnology - 801.4  Physical Chemistry - 943.2  Mechanical Variables Measurements

Numerical data indexing:Size 2.50e-08m, Size 4.50e-08m

DOI:10.3788/gzxb20174608.0823002

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 16>

Accession number:20173504083789

Title:Optimization of Overtone Resonance Based Quartz-enhanced Photoacoustic Spectroscopy Spectrophone

Authors:Ma, Ying (1, 3); Yu, Liang (2, 3); Zheng, Hua-Dan (3, 4); Liu, Qun (1); Qiu, Dan-Gui (1); Hou, Jian-Rong (1); Yin, Wang-Bao (3, 4); Dong, Lei (3, 4)

Author affiliation:(1) China Institute for Radiation Protetion, Taiyuan; 030006, China; (2) Xinxiang No. 1 High School, Xinxiang; Henan; 453000, China; (3) State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan; 030006, China; (4) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China

Corresponding author:Dong, Lei(donglei@sxu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0811002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A custom quartz tuning fork which is 5 times larger than commercial standard quartz tuning fork and operated at the 1st overtone resonance mode was used and optimized to improve the sensitivity of the quartz-enhanced photoacoustic spectroscopy spectrophone. The optimum ecxiting position for the laser beam was researched. Two resonance antinodes were found in the 1st overtone resonance, and the maxium signal amplitude was obtained at a distance of 8 mm from the tuning fork support. Acoustic micro-resonantors with three different inner diameters were configured with the custom tuning fork to evaluate the performance of the quartz-enhanced photoacoustic spectroscopy spectrophone. With an optinal parameters, a sensitivity gain factor of 30 was achieved with respect to the signal amplitude obtained by the bare tuning fork without acoustic micro-resonantors. &copy; 2017, Science Press. All right reserved.

Number of references:17

Main heading:Photoacoustic spectroscopy

Controlled terms:Acoustic spectroscopy - Chemical sensors - Laser beams - Photoacoustic effect - Quartz - Resonance - Tuning

Uncontrolled terms:Commercial standards - Inner diameters - Optical gas sensors - Quartz tuning fork - Quartz-enhanced photoacoustic spectroscopies - Resonance mode - Resonance vibrations - Signal amplitude

Classification code:482.2  Minerals - 744.8  Laser Beam Interactions - 751.1  Acoustic Waves - 751.2  Acoustic Properties of Materials - 801  Chemistry - 931.1  Mechanics

Numerical data indexing:Size 8.00e-03m

DOI:10.3788/gzxb20174608.0811002

Funding Details: Number; Acronym; Sponsor: 61575113; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61622503; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 17>

Accession number:20173504083792

Title:Simulation Design of a Low Threshold Hybrid Plasmonic Nanolaser

Authors:Li, Zhi-Quan (1); Feng, Dan-Dan (1); Bai, Lan-Di (1); Liu, Tong-Lei (1); Yue, Zhong (1); Gu, Er-Dan (1); Li, Wen-Chao (2)

Author affiliation:(1) Institute of Electrical Engineering, Yanshan University, Qinhuangdao; Hebei; 066004, China; (2) School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao; Hebei; 066004, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0814002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A low threshold nanolaser that contains nanowires, air gap and semicircular-top metal nanoridge structure was proposed.Through the finite element method to model characteristics and the quality of the laser gain factor and threshold for numerical calculation, the characteristic factor was studied with the geometric parameters (air gap, metal ridge width and nanowire radius) change. The results show that the property of the laser is optimized by adjusting the parameters. Under the optimal parameters, the gain threshold can reach 0.47 &mu;m<sup>-1</sup>and the transmission loss is only about 0.018. This shows that the nanolaser structure can achieve low threshold sub wavelength lasing and low loss transmission. It has a wide application prospect in the fields of biomedicine, optical communication etc. It provides technical support for miniaturization and integration of nano devices. &copy; 2017, Science Press. All right reserved.

Number of references:19

Main heading:Finite element method

Controlled terms:Nanowires - Numerical methods - Optical communication - Plasmons

Uncontrolled terms:Application prospect - Characteristic factors - Gain medium - Modal properties - Nanolasers - Numerical calculation - Simulation Design - Surface plasmons

Classification code:717.1  Optical Communication Systems - 761  Nanotechnology - 921.6  Numerical Methods - 931.3  Atomic and Molecular Physics - 933  Solid State Physics

DOI:10.3788/gzxb20174608.0814002

Funding Details: Number; Sponsor: F2014501150; Natural Science Foundation of Hebei Province

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 18>

Accession number:20173504083808

Title:Improvement of the Stability of Convolutional Perfect Matched Layer Based on Finite Difference Time-domain Algorithm

Authors:Xie, Guo-Da (1); Huang, Zhi-Xiang (1); Wang, Li-Hua (1); Wu, Xian-Liang (1)

Author affiliation:(1) Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, School of Electronics and Information Engineering, Anhui University, Hefei; 230039, China

Corresponding author:Huang, Zhi-Xiang(zxhuang@ahu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0826001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to overcome the convolutional perfectly matched layer's shortcoming of the poor absorption effect on evanescent wave in the finite difference time domain algorithm, a method of adding special absorption layer after convolutional perfectly matched layer was proposed. Without increasing the distance between the object and the inner layer of the absorbent layer, the decay factors in the special absorption layer were adjusted to make them constants and the absorption factor was increased from 1 to 10 to enhance the absorption layer's absorption performance to the evanescent wave. An example in which the plane wave is incident vertically to the single-layer photonic crystal shows that the absorption boundary with the addition of the special absorption layer can keep the convergence of the calculation result when the distance from the scatterer is 5 mesh, while the traditional absorption boundary is required to be separated by 80 grids to ensure the results converge. By using this absorption boundary in the structure, the transmission characteristic curve of the multilayer photonic crystal was calculated and compared with the result obtained by the conventional method, the results were in good agreement with each other. The numerical results show that the method is effective and correct. &copy; 2017, Science Press. All right reserved.

Number of references:19

Main heading:Time domain analysis

Controlled terms:Convolution - Crystal structure - Electromagnetic wave absorption - Electromagnetic wave reflection - Finite difference method - Finite difference time domain method - Numerical methods - Optical waveguides - Photonic crystals

Uncontrolled terms:Absorption layer - Absorption performance - Convolutional perfectly matched layer - Evanescent wave - Finite -difference time domains (FDTD) - Long time stabilities

Classification code:711  Electromagnetic Waves - 714.3  Waveguides - 716.1  Information Theory and Signal Processing - 921  Mathematics - 921.6  Numerical Methods - 933.1.1  Crystal Lattice

DOI:10.3788/gzxb20174608.0826001

Funding Details: Number; Acronym; Sponsor: 61601166; NSFC; National Natural Science Foundation of China - Number; Sponsor: KJ2015A202; Natural Science Foundation of Anhui Province

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 19>

Accession number:20173504083795

Title:Luminescence Properties and Energy Transfer Mechanism in Er<sup>3+</sup>and Pr<sup>3+</sup>Co-implanted AlN Films

Authors:Chen, Fei-Fei (1); Wang, Xiao-Dan (1); Yang, Ming-Ming (2); Mao, Hong-Min (1)

Author affiliation:(1) Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Mathematics and Physics, Suzhou University of Science and Technology, Suzhou; Jiangsu; 215009, China; (2) Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou; Jiangsu; 215123, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0816001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Er<sup>3+</sup>and Pr<sup>3+</sup>co-doped AlN thin films were prepared by ion implantation, luminescence properties were characterized via cathodoluminescence spectrometer. For Er<sup>3+</sup>doped AlN thin films, 410 and 480 nm peaks with higher intensity were observed, and there were other weaker peaks observed at 537, 560, 771, and 819 nm. For Pr<sup>3+</sup>doped AlN thin films, 528 nm peak with higher intensity was observed, and there were other weaker peaks observed at 657 and 675 nm. However, for Er<sup>3+</sup>and Pr<sup>3+</sup>co-doped AlN thin films, a new luminescence peak at 494 nm was observed and was attributed to Pr<sup>3+</sup>. According to the experimental results, the energy transfer mechanism between Er<sup>3+</sup>and Pr<sup>3+</sup>in AlN thin films were investigated, the results show that resonant energy transfer exists between<sup>4</sup>F<inf>7/2</inf>&rarr;<sup>4</sup>I<inf>15/2</inf>of Er<sup>3+</sup>and<sup>3</sup>P<inf>0</inf>&rarr;<sup>3</sup>H<inf>4</inf>of Pr<sup>3+</sup>, which results in the new 494 nm luminescence peak of Pr<sup>3+</sup>. &copy; 2017, Science Press. All right reserved.

Number of references:17

Main heading:Thin films

Controlled terms:Aluminum nitride - Cathodoluminescence - Cobalt - Energy transfer - Erbium - Europium - Ion implantation - Light emission - Luminescence - Luminescence of inorganic solids  - Optoelectronic devices - Polonium

Uncontrolled terms:AlN films - AlN thin films - Co-doped - Energy transfer mechanisms - Luminescence peak - Luminescence properties - Resonant energy transfer

Classification code:547.2  Rare Earth Metals - 549.3  Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 622.1  Radioactive Materials, General - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 804.1  Organic Compounds

Numerical data indexing:Size 4.10e-07m, Size 4.80e-07m, Size 4.94e-07m, Size 5.28e-07m, Size 6.57e-07m, Size 6.75e-07m, Size 8.19e-07m

DOI:10.3788/gzxb20174608.0816001

Funding Details: Number; Acronym; Sponsor: 51002179; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51272270; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61306004; NSFC; National Natural Science Foundation of China - Number; Sponsor: BK20130263; Natural Science Foundation of Jiangsu Province

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 20>

Accession number:20173504083782

Title:The Research of High Photon Detection Efficiency CMOS Single Photon Avalanche Diode

Authors:Wang, Wei (1); Chen, Ting (1, 2); Li, Jun-Feng (2); He, Yong-Chun (1); Wang, Guan-Yu (1); Tang, Zheng-Wei (1); Yuan, Jun (1); Wang, Guang (1)

Author affiliation:(1) International Institute of Semiconductors/College of Electronics Engineering, Chongqing University of Posts and Telecommunications, Chongqing; 400065, China; (2) Institute of Microelectronics of Chinese Academy of Sciences, Beijing; 100029, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0823001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A single photon avalanche diode designed with 0.18um CMOS technology is proposed, with which the weak light in 650~950nm wavelength can effectively detected. The single photon avalanche diode employs a P<sup>+</sup>/N-well structure, the deeper P<sup>+</sup>layer is designed to improve the photon detection efficiency and responsivity in longer light wave; moreover, the increase of the thickness of depletion layer can be got with the use of the low doped deep N well, which can improve the detection sensitivity, and the PN junction formed by deep N well and substrate can effectively isolate substrate in order to reduce substrate noise. The use of P-well as the protection ring can prevent premature edge breakdown phenomenon. The basic structural parameters and process parameters of single photon avalanche diode devices are determined by theoretical analysis, and the device performance is optimized with Silvaco TCAD software. The simulation results show that when the optical window diameter of the device is 10 &mu;m, the avalanche breakdown voltage is 18.4 V, with the illumination of 0.001 W/cm<sup>2</sup>, the peak of response is of 0.495 A/W at 650 nm will be got. when the reverse bias is excessed the breakdown voltage for 2 V, in the range of 650~950 nm wavelength, the photon detection efficiency is higher than 30%. With the increase of reverse bias, the detection efficiency is improved. &copy; 2017, Science Press. All right reserved.

Number of references:27

Main heading:Avalanche diodes

Controlled terms:Bias voltage - CMOS integrated circuits - Efficiency - Electric breakdown - Particle beams - Photodetectors - Photons

Uncontrolled terms:Breakdown characteristics - CMOS processs - Deep N-well - Guard-rings - Photon detection efficiency - Responsivity - Single photon avalanche diode

Classification code:701.1  Electricity: Basic Concepts and Phenomena - 713  Electronic Circuits - 714.1  Electron Tubes - 714.2  Semiconductor Devices and Integrated Circuits - 913.1  Production Engineering - 931.3  Atomic and Molecular Physics - 932.1  High Energy Physics

Numerical data indexing:Percentage 3.00e+01%, Size 1.00e-05m, Size 6.50e-07m, Size 6.50e-07m to 9.50e-07m, Surface_Power_Density 1.00e+01W/m2, Voltage 1.84e+01V, Voltage 2.00e+00V

DOI:10.3788/gzxb20174608.0823001

Funding Details: Number; Acronym; Sponsor: 61404019; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 21>

Accession number:20173504083785

Title:Investigation on Ring-Cavity 2.05 &mu;m Single Resonant KTP Crystal Optical Parametric Oscillator

Authors:Xie, Xiao-Bing (1, 2); Li, Shi-Guang (1); Zhu, Xiao-Lei (1); Ma, Xiu-Hua (1); Dong, Yi-Jing (1, 2); Xie, Wei (1, 2)

Author affiliation:(1) Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai; 201800, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Li, Shi-Guang(sgli@siom.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0823004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Based on the application requirements of differential absorption lidar for atmospheric CO<inf>2</inf>concentration detection, a single-resonant KTP crystal optical parametric oscillator, pumped by a 1 064 nm single-longitudinal-mode laser, was built with stable ring-cavity and mode matching design, and nanosecond laser pulse output at 2.05 &mu;m wavelength was achieved with high slope conversion efficiency. In the stable ring cavity with a bow-tie configuration, two KTP crystals with type II phase-match condition cut were placed in walk-off-compensated arrangement. When the pump pulse energy reached 11 mJ at a repetition rate of 20 Hz, 2.4 mJ of laser pulse energy output at 2.05 &mu;m signal wavelength was obtained with pulse width of around 24 ns, and the corresponding slope efficiency was 53%. The 2.05 &mu;m signal laser beam quality factor in x and y directions were 1.3 and 1.2 respectively. &copy; 2017, Science Press. All right reserved.

Number of references:21

Main heading:Parametric oscillators

Controlled terms:Conversion efficiency - Laser beams - Laser pulses - Nonlinear optics - Optical frequency conversion - Optical parametric oscillators - Optical pumping - Optical radar - Optically pumped lasers - Pulse repetition rate  - Pumping (laser)

Uncontrolled terms:Application requirements - Differential absorption lidars - KTP crystals - Laser-pulse energy - Nanosecond laser pulse - Ring cavities - Single longitudinal mode - Slope efficiencies

Classification code:525.5  Energy Conversion Issues - 713.2  Oscillators - 741.1.1  Nonlinear Optics - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 744.8  Laser Beam Interactions

Numerical data indexing:Energy 1.10e-02J, Energy 2.40e-03J, Frequency 2.00e+01Hz, Percentage 5.30e+01%, Size 1.06e-06m, Size 2.05e-06m, Time 2.40e-08s

DOI:10.3788/gzxb20174608.0823004

Funding Details: Number; Acronym; Sponsor: 61505230; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 22>

Accession number:20173504083796

Title:Influences of GaAs Spacer Thickness on the Optical Properties of InAs/GaAs Quantum Dot Molecule

Authors:Liu, Yao (1); Wang, Ying (1); Guo, Qing-Lin (1); Li, Xiao-Li (1); Liang, Bao-Lai (1); Wang, Shu-Fang (1); Fu, Guang-Sheng (1)

Author affiliation:(1) College of Physics Science &amp; Technology, Hebei University, Baoding; Hebei; 071002, China

Corresponding author:Guo, Qing-Lin(qlguo@hbu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0816002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The optical properties of self-assembled bilayer InAs/GaAs quantum dots (QDs) are investigated by photoluminescence (PL) and time-resolved photoluminescence (TRPL) as a function of the GaAs spacer thickness. First, the PL spectrum change with excitation intensity are investigated, the variation of PL intensity ratio between the seed layer of QDs (SQDs) and the top layer of QDs (TQDs) with respect to the excitation laser intensity reveals that the coupling and subsequently the interlayer carrier transfer between the two layers of QDs decreases with increasing the GaAs spacer thickness. Then, the temperature-dependent PL behaviors, in measurement of the peak energy (E<inf>max</inf>), linewidth (Full Width of Half Maximum, FWHM), and the integrated intensity of QDs, show that the GaAs spacer thickness strongly affect the dynamics and the thermal quenching process of carrier in the bilayer QD structrures. At last, TRPL measurements show that the carrier tunneling time of the 60ML spacer QD sample is significantly longer than that of the 40ML spacer QD sample. &copy; 2017, Science Press. All right reserved.

Number of references:16

Main heading:Semiconductor quantum dots

Controlled terms:Gallium arsenide - Laser excitation - Nanocrystals - Optical properties - Photoluminescence - Semiconducting gallium

Uncontrolled terms:Carrier - Photofluorescence - Self assembled quantum dots - Spectrum - Time-resolved

Classification code:712.1.1  Single Element Semiconducting Materials - 714.2  Semiconductor Devices and Integrated Circuits - 741.1  Light/Optics - 744.9  Laser Applications - 761  Nanotechnology - 804  Chemical Products Generally

DOI:10.3788/gzxb20174608.0816002

Funding Details: Number; Sponsor: A2015201046; Natural Science Foundation of Hebei Province

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 23>

Accession number:20173504083806

Title:Analysis on Dynamics of Photo-induced Carriers in GaAs by Ultrafast Spectroscopy

Authors:Yu, Zhong-Hui (1); Zhang, Su-Juan (1); He, Chuan (1); Huang, Yuan-Yuan (1); Zhu, Li-Peng (1)

Author affiliation:(1) Institute of Photonics&amp;Photon-Technology/State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, Northwest University, Xi'an; 710069, China

Corresponding author:Zhang, Su-Juan(sjzhang1998@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0832001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Varied with some optical parameters, such as center wavelength, power, the differential reflectance spectroscopy of unintentionally doped high-purity n-type gallium arsenide were studied by femtosecond laser pump probe technique. These time-resolved differential reflective spectroscopy further analyzed the dynamics of photo-induced carrier of gallium arsenide at room temperature. Firstly, if the pump and the probe power were stabled at 100 mW and 10 mW respectively, the peak differential reflectivity increases with the red shift of center wavelength, and the signal-to-noise ratio increases as well. Secondly, Based on the fitting experimental data of varying pump power and the theoretical model, it is found that there is a linear correlation between the pump power and the differential reflectance in a certain range, through which the saturated carrier concentration of this gallium arsenide sample was calculated as (3.590 1&plusmn;0.310 3)&times;10<sup>17</sup>cm<sup>-3</sup>. Thirdly, the dynamics process of photo-induced carriers is divided into three terms: the photo-excitation process (804&plusmn;67 fs), the initial scattering process (134 ~268 fs), the recombination process with 1 picosecond and 3~6 ps. Last but not least, it seems that the differential reflectance has no significant dependence on the probe power, but the signal-to-noise ratio of the differential reflectance spectrum is correlated with the probe power. In a word, this work not only investigates the ultrafast dynamics of unintentionally doped high purity n-type gallium arsenide, which provides a reference for other materials, but also offers the optimal experimental parameters of pump-probe spectroscopy. &copy; 2017, Science Press. All right reserved.

Number of references:27

Main heading:Gallium arsenide

Controlled terms:Carrier concentration - Carrier lifetime - Dynamics - Gallium - Image analysis - Optoelectronic devices - Probes - Pumping (laser) - Reflection - Signal to noise ratio  - Ultrafast lasers

Uncontrolled terms:Differential reflectance spectroscopy - Differential reflectivity - Experimental parameters - Optical spectroscopy - Photo-excitation process - Pump probe - Pump-probe spectroscopy - Ultra-fast spectroscopies

Classification code:549.3  Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 701.1  Electricity: Basic Concepts and Phenomena - 716.1  Information Theory and Signal Processing - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 804  Chemical Products Generally

Numerical data indexing:Power 1.00e-01W, Power 1.00e-02W, Time 1.00e-12s, Time 1.34e-13s to 2.68e-13s, Time 3.00e-12s to 6.00e-12s

DOI:10.3788/gzxb20174608.0832001

Funding Details: Number; Acronym; Sponsor: 61378040; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 24>

Accession number:20173504083793

Title:1064 nm Ultrashort Cavity Single-frequency Distributed Bragg Reflector Yb-doped Silica Fiber Laser

Authors:Huang, Jin (1, 2); Sun, Bo (1, 2); Jia, Jing (1, 2); Zhang, Xue-Qiang (1, 2); Bai, Jin-Tao (1, 2)

Author affiliation:(1) Institute of Photonics and Photon-technology, Northwest University, Xi'an; 710069, China; (2) Key Laboratory of Opto-electronic Technology of Shaanxi Province, Northwest University, Xi'an; 710069, China

Corresponding author:Sun, Bo(sunbo_xt@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0814003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:An ultrashort cavity single-frequency Distributed Bragg Reflector (DBR) laser operating at 1064 nm was proposed with a cavity length of 2 cm, and the gain medium is a 1.1 cm long highly Yb-doped silica fiber. With a proper temperature control, the stable single-frequency laser with a linewidth of 4.8 kHz was achieved. The maximum output power of the DBR fiber laser is 13 mW with a slope efficiency of 3.4% relative to the launched pump power of 378 mW. The measured relative intensity noise is about -132 dB/Hz at frequencies of over 1 MHz. The master oscillator power-amplifier structure was used to amplify the output power of the DBR laser. When the length of the amplification gain laser is given as 56 cm, the output power is scaled up to 325 mW with a slope efficiency of 52.8%. &copy; 2017, Science Press. All right reserved.

Number of references:16

Main heading:DBR lasers

Controlled terms:Bragg reflectors - Distributed Bragg reflectors - Efficiency - Fiber lasers - Fibers - Power amplifiers - Pumping (laser) - Reflection - Silica - Ytterbium

Uncontrolled terms:Master oscillator power amplifiers - Maximum output power - Power amplifer - Relative intensity noise - Single frequency - Single frequency laser - Ultra-short cavity - Yb-doped

Classification code:547.2  Rare Earth Metals - 713.1  Amplifiers - 741.3  Optical Devices and Systems - 744  Lasers - 913.1  Production Engineering

Numerical data indexing:Frequency 1.00e+06Hz, Frequency 4.80e+03Hz, Percentage 3.40e+00%, Percentage 5.28e+01%, Power 1.30e-02W, Power 3.25e-01W, Power 3.78e-01W, Size 1.06e-06m, Size 1.10e-02m, Size 2.00e-02m, Size 5.60e-01m

DOI:10.3788/gzxb20174608.0814003

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 25>

Accession number:20173504083803

Title:Development and Agricultural Application of a Mid-Infrared Carbon Dioxide Sensor System

Authors:Zheng, Ling-Jiao (1); Niu, Xin-Tao (1); Wang, Jia-Ning (1); Zheng, Chuan-Tao (1); Wang, Yi-Ding (1)

Author affiliation:(1) State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun; 130012, China

Corresponding author:Zheng, Chuan-Tao(zhengchuantao@jlu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0812004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Using the fundamental absorption band at the wavelength of 4.25 &mu;m of carbon dioxide molecule, a differential mid-infrared carbon dioxide detection system was developed. The optical part of the system includes infrared thermal emitter, dual-channel pyroelectric detector and spherical mirror and the circuit part mainly consists of signal-processing, source-driving and main-control module. Simulating and optimizing the structure of the gas cell by using Tracepro software, eventually, the optical path of the gas absorption reaches 30 cm, and the performance of the system is improved. Preparing standard carbon dioxide gases with different concentration and investigating the sensing characteristics of system on carbon dioxide gas. Experimental results indicate that, the error between the measured concentration which are obtained by fitting curve and actual concentration is small, in the range of 0~5 000 ppm, the standard deviation of the measured concentration is less than 45 ppm, and that is less than 5 ppm under 500 ppm; the standard deviation of 2 hours long-term measurement concentration on the 0 ppm is about 2.8 ppm; the 1&sigma; theoretical limit of detection obtained from the Allan variance is 2.5 ppm. Finally, each carbon dioxide sensor becomes a sensor node by adding wireless module nRF24L01 on each carbon dioxide sensor. Building a wireless sensor network in the chosen greenhouse. We have collected the carbon dioxide concentration and verified the performance of the developed sensor by filed application. &copy; 2017, Science Press. All right reserved.

Number of references:17

Main heading:Carbon dioxide

Controlled terms:Absorption spectroscopy - Carbon dioxide recorders - Curve fitting - Gas absorption - Gas detectors - Gases - Greenhouses - Infrared absorption - Infrared devices - Light absorption  - Optoelectronic devices - Sensor nodes - Signal processing - Statistics - Wireless sensor networks

Uncontrolled terms:Carbon dioxide concentrations - Carbon dioxide detection - Carbon dioxide sensors - Long-term measurements - Pyro-electric detectors - Sensing characteristics - Standard deviation - Theoretical limits

Classification code:711  Electromagnetic Waves - 716.1  Information Theory and Signal Processing - 716.3  Radio Systems and Equipment - 722  Computer Systems and Equipment - 722.3  Data Communication, Equipment and Techniques - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 802.3  Chemical Operations - 804.2  Inorganic Compounds - 821.6  Farm Buildings and Other Structures - 921.6  Numerical Methods - 922.2  Mathematical Statistics - 943.3  Special Purpose Instruments

Numerical data indexing:Size 3.00e-01m, Size 4.25e-06m, Time 7.20e+03s

DOI:10.3788/gzxb20174608.0812004

Funding Details: Number; Acronym; Sponsor: 61307124; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 26>

Accession number:20173504083799

Title:Electronic Structures and Absorption Spectra of Cu&#8758;Mn&#8758;LiNbO<inf>3</inf>Crystals Based on First-principles

Authors:Bai, Hong-Mei (1); Zhang, Yun (1); Wang, Xue-Wei (1)

Author affiliation:(1) School of Physical Science and Technology, Southwest University, Chongqing; 400715, China

Corresponding author:Zhang, Yun(yzhang@swu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0816005

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The electronic structures and the absorption spectra of the Cu and Mn mono and co-doped LiNbO<inf>3</inf>crystals were investigated by first-principles based on the density functional theory. The results show that the impurity energy levels of Cu and Mn doped LiNbO<inf>3</inf>crystals appear within the band gaps, which are contributed by Cu 3d orbital and Mn 3d orbital. The band gap of each doped crystal is narrower than that of LiNbO<inf>3</inf>crystal. There are three absorption peaks at 2.87 eV, 2.24 eV and 1.73 eV respectively in Cu&#8758;Mn&#8758;LiNbO<inf>3</inf>crystal. The first one and last one come from the electron transitions from Cu<sup>2+</sup>and Mn<sup>2+</sup>level to conduction band respectively. The second one is not photorefractive and relative with the concentrations of Mn<sup>3+</sup>. Comparing with the Cu&#8758;Fe&#8758;LiNbO<inf>3</inf>crystal, the recording center (Cu<sup>2+</sup>) is deeper in Cu&#8758;Mn&#8758;LiNbO<inf>3</inf>crystal. In the two-center holographic recording, it is practicable to take suitable higher concentration of Cu ion in Cu&#8758;Mn&#8758;LiNbO<inf>3</inf>crystal to raise the dynamic range and sensitivity via enhancing the refractive-index change. The selecting of accompanying doping ion would affect the storage parameters, even if the recording center ion (deep level) is the same, so it's necessary to select codoping ions according to the simulating datum of the different samples. &copy; 2017, Science Press. All right reserved.

Number of references:31

Main heading:Manganese

Controlled terms:Absorption spectra - Crystal impurities - Crystal structure - Density functional theory - Electromagnetic wave absorption - Electron transitions - Electronic structure - Energy gap - Heavy ions - Ions  - Lithium compounds - Refractive index

Uncontrolled terms:Absorption peaks - Co-doped - Doped crystals - First principles - LiNbO3 crystals - Photo-refractive - Refractive index changes - Two-center holographic recording

Classification code:543.2  Manganese and Alloys - 711  Electromagnetic Waves - 711.2  Electromagnetic Waves in Relation to Various Structures - 741.1  Light/Optics - 922.1  Probability Theory - 933.1.1  Crystal Lattice

Numerical data indexing:Electron_Volt 1.73e+00eV, Electron_Volt 2.24e+00eV, Electron_Volt 2.87e+00eV

DOI:10.3788/gzxb20174608.0816005

Funding Details: Number; Acronym; Sponsor: 11274257; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 27>

Accession number:20173504083807

Title:Femtosecond Time-resolved Spectroscopies of the Excited State of the All-trans-astaxanthin in DMSO Solvent

Authors:Jiang, Li-Lin (1); Liu, Wei-Long (2); Chen, Qin (3); Shi, Yan (1); Wu, Gui-Rong (1)

Author affiliation:(1) Teaching Affairs Office, Hezhou University, Hezhou; Guangxi; 542899, China; (2) Department of Physics, Harbin Institute of Technology, Harbin; 150001, China; (3) School of Education and Music, Hezhou University, Hezhou; Guangxi; 542899, China

Corresponding author:Jiang, Li-Lin(jianglilin2009@gmail.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0832002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The ultrafast excited state relaxation dynamics of all-trans-Astaxanthin (AXT) in Dimethyl Sulfoxide (DMSO) was investigated using femtosecond time-resolved transient absorption and multiplex transient grating spectroscopies. The results reveal that the S<inf>0</inf>&rarr;S<inf>2</inf>absorption transition directly occurs in the AXT/DMSO system, which corresponds to the ground state bleach in the 420~550 nm spectral region. Internal conversion that is ascribed to S<inf>2</inf>&rarr;S<inf>1</inf>transition takes place on the time constant of 120~160 fs. The excited state absorption of the S<inf>1</inf>state corresponds to the region of the 550~740 nm. The recovery progress of the ground state bleach corresponds to the internal conversion progress, which is attributed to the S<inf>1</inf>&rarr;S<inf>0</inf>transition and occurs on the time scale of 4.50~5.50 ps. &copy; 2017, Science Press. All right reserved.

Number of references:36

Main heading:Excited states

Controlled terms:Bleaching - Cleaning - Dimethyl sulfoxide - Ground state - Laser spectroscopy - Organic solvents - Quantum theory - Relaxation processes

Uncontrolled terms:Excited state relaxation - Femtosecond time-resolved - Internal conversions - Time constants - Transient absorption - Transient grating

Classification code:741.3  Optical Devices and Systems - 802.3  Chemical Operations - 804.1  Organic Compounds - 811.1.1  Papermaking Processes - 931.1  Mechanics - 931.4  Quantum Theory; Quantum Mechanics

Numerical data indexing:Size 4.20e-07m to 5.50e-07m, Size 5.50e-07m to 7.40e-07m, Time 1.20e-13s to 1.60e-13s, Time 4.50e-12s to 5.50e-12s

DOI:10.3788/gzxb20174608.0832002

Funding Details: Number; Acronym; Sponsor: 11304058; NSFC; National Natural Science Foundation of China - Number; Sponsor: 2014GXNSFAA118019; Natural Science Foundation of Guangxi Province

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 28>

Accession number:20173504083788

Title:Two-axis Velocity Interferometer Technique Based on Shenguang-III Prototype Laser Facility

Authors:Wang, Feng (1); Ji, Teng (1); Xu, Tao (1); Li, Yu-Long (1); Jing, Long-Fei (1); Wei, Hui-Yue (1); Peng, Xiao-Shi (1)

Author affiliation:(1) Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang; Sichuan; 621900, China

Corresponding author:Li, Yu-Long(2013may6th@sina.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0811001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:There is no useful diagnostic technique to measure the shock wave for the target asymmetry in early implosion without extra processing to black cavity and target during the study of laser inertial confinement fusion. The two-axis velocity interferometer system for any reflector was developed based on Shenguang-III prototype laser facility and the experimental results were introduced. Velocity history of shock wave in equatorial and polar of target was obtained by installing small mirror in the target. According to the reflectivity of the material and the influence by the X ray, it is determined that Al is the suitable material for the mirror at present. The difference between the plane shock loading and spherical shock loading was compared. It is found that the accurate for target equipment is the main reason for fewer signals. The diagnostic technique of two-axis velocity interferometer system for any reflector was explored through the experiment, which would give a reference to develop the two-axis velocity interferometer system or multi-axis velocity interferometer system. &copy; 2017, Science Press. All right reserved.

Number of references:16

Main heading:Velocity

Controlled terms:Interferometers - Mirrors - Reflection - Shock problems - Shock waves

Uncontrolled terms:Convergent geometry - Diagnostic techniques - Spherical shocks - Target asymmetries - Two-axis - Velocity interferometer - Velocity interferometer system for any reflectors - Velocity interferometer systems

Classification code:741.3  Optical Devices and Systems - 931  Classical Physics; Quantum Theory; Relativity - 941.3  Optical Instruments

DOI:10.3788/gzxb20174608.0811001

Funding Details: Number; Acronym; Sponsor: 11305158; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 29>

Accession number:20173504083810

Title:Laser Multiple Scattering Simulation for Fog with Closed Distance

Authors:Tong, Guang-De (1, 2, 3); Wang, Zhan-Shan (1, 2); Shen, Zheng-Xiang (1, 2); Wang, Biao (3)

Author affiliation:(1) Key Laboratory of Advanced Micro-structure Materials, Ministry of Education, Tongji University, Shanghai; 200092, China; (2) Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai; 200092, China; (3) Science and Technology on Electromagnetic Scattering Laboratory, Shanghai; 200092, China

Corresponding author:Wang, Zhan-Shan(wangzs@tongji.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0829001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to meet the demand for accurate and rapid multiple scattering simulation of fog, when the short-range radar distance was close, a fast and efficient simulation method of multi-scattering was proposed based on the combination of Mie theory and radar equation. First, the fog model was built according to the fog particle size distribution. Then, scattering functions about single particle were given based on Mie theory, and the first order scattering and the second order scattering power densities of single particle in fog model were calculated. The expressions of multiple scattering cross section of single particle and scattering coefficients of fog were deduced based on radar equation. Simulation results show that the second order scattering cross section is approximately proportional to 2/3 power density of fog, and the second order scattering coefficient with increasing visibility decreases more quickly than the first order scattering. &copy; 2017, Science Press. All right reserved.

Number of references:25

Main heading:Radar cross section

Controlled terms:Fog - Multiple scattering - Particle size - Particle size analysis - Radar - Radar theory - Size distribution - Visibility

Uncontrolled terms:Efficient simulation - First order scattering - Multi scatterings - Scattering co-efficient - Scattering functions - Second order scattering - Short range radar - Simulation

Classification code:443.1  Atmospheric Properties - 716.2  Radar Systems and Equipment - 741.2  Vision - 922.2  Mathematical Statistics - 951  Materials Science

DOI:10.3788/gzxb20174608.0829001

Funding Details: Number; Acronym; Sponsor: 10978002; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61621001; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

<RECORD 30>

Accession number:20173504083800

Title:Transfer and Restoration Algorithm for Slow and Subtle Spectra Deformation of TDLAS Gas Analyser

Authors:Ji, Wen-Hai (1, 2); Yang, Ya-Han (1); Ren, Peng (1); Li, Guo-Lin (1)

Author affiliation:(1) College of Information and Control Engineering, China University of Petroleum, Qingdao; Shandong; 266580, China; (2) State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai; 200062, China

Corresponding author:Li, Guo-Lin(liguolin@upc.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:46

Issue:8

Issue date:August 1, 2017

Publication year:2017

Article number:0812001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to reduce the impact of the chronic spectral deformation on TDLAS gas analyzer accuracy, a transfer and restoration method was proposed. By comparing the real time spectra with the calibration spectra for validation gas, the deformation coefficient is obtained. The process gas spectra share the same deformation mechanism with the validation gas. So the process spectra can be restored to the calibration state due to deformation transitivity. Consequently analyzer maintains the original fidelity. It solves the tough issue of spectra restoration for dynamic process gas. It requires no adjustment of hardware parameters of optical or electronics system. The spectra are restored through signal filtering, feature extraction and deformation coefficients calculation. In the simulation, the similarity measure maintained 99.999% between calibration spectra and restorated real time spectra. For the experimentally acquired CO<inf>2</inf>gas spectra with different levels of deformation, the similarity measure maintained 99.9% between target spectra and real time spectra with Lagrangian interpolation restoration. &copy; 2017, Science Press. All right reserved.

Number of references:22

Main heading:Restoration

Controlled terms:Calibration - Deformation - Extraction - Feature extraction - Gases - Signal processing

Uncontrolled terms:Deformation coefficients - Deformation mechanism - Lagrangian interpolation - Restoration algorithm - Restoration methods - Similarity measure - Spectral deformations - TDLAS

Classification code:716.1  Information Theory and Signal Processing - 802.3  Chemical Operations

Numerical data indexing:Percentage 1.00e+02%, Percentage 9.99e+01%

DOI:10.3788/gzxb20174608.0812001

Database:Compendex

Compilation and indexing terms, Copyright 2017 Elsevier Inc.

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