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2018年47卷4期27篇论文

<RECORD 1>

Accession number:20182105217752

Title:Design and Analysis of a Thermally Driven Focusing Structure for Space Camera

Authors:Li, Ze-Kun (1, 2); L&uuml;, Qun-Bo (1, 2); Li, Wei-Yan (1)

Author affiliation:(1) Key Laboratory of Computation Optical Imaging Technology, Academy of Opto-electronics, Chinese Academy of Sciences, Beijing; 100094, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:L&uuml;, Qun-Bo(lvqunbo@aoe.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0422004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to improve imaging quality of the space camera, a thermally driven focusing structure is designed to compensate the offset. Firstly, the focusing method is chosen according to the optical system, and the focusing structure is designed by driving the secondary mirror to move along the direction of the optical axis which occupies small space and is light in quality. Then, according to the demand of focusing, the aluminum with higher thermal expansion coefficient is selected as the main material. To ensure the secondary mirror works at constant temperature, some heating films are attached to the back of the mirror seat. And the performance of the focusing structure is simulated by the finite element method. Finally, the working state of the focusing structure is analyzed, and the deformation of the mirror caused by the temperature change is fitted by Zernike polynomial, and the fitting coefficients are input into the Zemax. As the measurement of imaging quality, the modulation transfer function is used to reflect the impact of the deformation of the sub-mirror on the optical performance of the space camera. The result shows that the focusing structure meets the design specifications and the impact of deformation belonging to the sub-mirror on the imaging quality of optical system can be neglected when the focusing structure is working. Compared with traditional focusing structures, the thermally driven focusing structure has the advantages of light weight and simple structure.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Finite element method

Controlled terms:Cameras - Deformation - Focusing - Mirrors - Optical systems - Thermal expansion

Uncontrolled terms:Constant temperature - Coupled analysis - Design and analysis - Design specification - Optical performance - Space cameras - Thermal expansion coefficients - Zernike polynomials

Classification code:741.3  Optical Devices and Systems - 742.2  Photographic Equipment - 921.6  Numerical Methods - 951  Materials Science

DOI:10.3788/gzxb20184704.0422004

Funding Details: Number; Acronym; Sponsor: 61635002; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 2>

Accession number:20182105217761

Title:Aerial Camera Geo-location Method Based on POS System

Authors:Yang, Hong-Tao (1, 2); Zhang, Guang-Dong (1); Shi, Kui (1); Zhao, Rong-Hui (1); Gao, Bo (1); Chen, wei-Ning (1)

Author affiliation:(1) 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

Corresponding author:Zhang, Guang-Dong(275916759@qq.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0412001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to acquire the geographic location information of the target zone accurately and quickly, the location algorithm was developed for width area-array aerial camera processing passive target location. The paper uses camera's position and attitude information measured by position and orientation system which was rigidly connected with camera to regain beam's space position. Then paper chooses the suitable object coordinate system and builds collinearity equation by coordinate transformation to calculate the location information by single photo and target elevation information. Error model is built and simulated by total differential method and Monte-Carlo method respectively. The geo-location algorithm is verified by the flight test, when the plane flies at an altitude of 5 000 m, the location error is less than 30 m, which meets the requirement of the project.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Location

Controlled terms:Antenna arrays - Cameras - Error analysis - Errors - Monte Carlo methods

Uncontrolled terms:Aerial camera - Co-ordinate transformation - Collinearity equations - Geographic location - Location information - Object coordinate systems - Position and orientation systems - Target location

Classification code:742.2  Photographic Equipment - 922.2  Mathematical Statistics

Numerical data indexing:Size 3.00e+01m, Size 5.00e+03m

DOI:10.3788/gzxb20184704.0412001

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 3>

Accession number:20182105217773

Title:Mobile Multiple Baselines Visibility Meter and Its Measurement Approach

Authors:Li, Meng (1, 2); Xu, Jiu-Zhi (3); Xiong, Xing-Long (3); Ma, Yu-Zhao (3); Zhao, Yi-Fei (3); Zhang, Gui-Zhong (2); Yao, Jian-Quan (2)

Author affiliation:(1) Key Laboratory of Operation Programming &amp; Safety Technology of Air Traffic Management, Civil Aviation University of China, Tianjin; 300300, China; (2) Key Lab of Optoelectronic Information Technology, Ministry of Education, Tianjin University, Tianjin; 300072, China; (3) Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin; 300300, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0401002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to solve the problems that the single-baseline transmissometer is a single sampling volume device and effected by noise seriously, a mobile variable baselines visibility detection device is designed and produced. Four modules of emission, receiver, transfer and processor constitute the entire system. The emission sources is 532 nm laser. The trolley is set on the sliding track, receiving the signals in a state of continuous movement. Applying this approach, the multiple baseline visibility detection is realized. Then, the time averaging combing with least squares method is employed to compute the ultimate atmosphere visibility. This equipment only makes the use of single receiver to operate, which can eliminate the error caused by the optical system contamination in theory. By the error theoretical analysis, the detection variance and baseline sampling points models on the proposed system are exhibited, and the anti-noise performance is proved through adding noise simulations on the system. Finally, the entire device is tested in the real atmosphere, it is turned to be reliable by comparing the actual data.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:23

Main heading:Least squares approximations

Controlled terms:Error detection - Meteorological instruments - Optical systems - Visibility

Uncontrolled terms:Anti noise - Emission sources - Least squares methods - Noise simulation - System contamination - Variable baselines - Visibility detections - Visibility meters

Classification code:443.2  Meteorological Instrumentation - 741.2  Vision - 741.3  Optical Devices and Systems - 921.6  Numerical Methods

Numerical data indexing:Size 5.32e-07m

DOI:10.3788/gzxb20184704.0401002

Funding Details: Number; Acronym; Sponsor: U1433202; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: U1533113; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: U1533117; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: U1633109; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 4>

Accession number:20182105217766

Title:Analysis of Quantum Radar Cross Section of Conical Composite Target

Authors:Xu, Ze-Hua (1); Li, Wei (1); Xu, Qiang (1); Zheng, Jia-Yi (1)

Author affiliation:(1) Institute of Information and Navigation, Air Force Engineering University, Xi'an; 710077, China

Corresponding author:Xu, Ze-Hua(13259462375@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0429001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Aiming at the quantum radar cross section computational problems of missiles, a cone-pillared composite model is used to simulate the missile target geometry. The single-photon wave equation is introduced to derive and improve quantum radar cross section expressions. By interfering with the interaction of atoms and photons on the mirror surface, the intensity of the photons scattered by the target atoms is measured at the detection point to obtain the quantum radar cross section formula of the cone column compound target. The simulation results show that the mainlobe peak of single-photon quantum radar cross section is higher than that of classical radar cross section and the quantum radar cross section sidelobes peak is lower than that of classical radar cross section under different incident angles. The quantum radar cross section decreases with decreasing wavelength, and the incident angles have no influences on quantum radar cross section. It shows that the quantum radar has a high detection and identification ability for small targets and the resolution can reach nanometer level, which provides a basis for missile target identification.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Radar cross section

Controlled terms:Computational geometry - Light - Missiles - Optical resolving power - Particle beams - Photons - Quantum optics - Radar measurement - Tracking radar

Uncontrolled terms:Composite modeling - Composite target - Computational problem - Detection and identifications - Detection point - Nanometer level - Quantum interference - Target identification

Classification code:404.1  Military Engineering - 716.2  Radar Systems and Equipment - 723.5  Computer Applications - 741.1  Light/Optics - 931.3  Atomic and Molecular Physics - 932.1  High Energy Physics

DOI:10.3788/gzxb20184704.0429001

Funding Details: Number; Sponsor: 2016JM6042; Natural Science Foundation of Shaanxi Province - Number; Acronym; Sponsor: 61302153; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61571456; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 5>

Accession number:20182105217772

Title:Experimental Investigation on Light Intensity Fluctuation at Night in Lanzhou Area

Authors:Wang, Hui-Qin (1); Li, Yuan (1); Hu, Qiu (1); Bao, Zhong-Xian (1); Cao, Ming-Hua (1)

Author affiliation:(1) School of Computer&amp; Communication, Lanzhou University of Technology, Lanzhou; 730050, China

Corresponding author:Cao, Ming-Hua(caominghua@lut.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0401001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A wireless optical transmission experiment with a link length of 610m was carried out at night in Lanzhou area to investigate the statistical characteristics of light intensity fluctuation in sunny, overcast, sleet and dust days. The atmospheric structure constant of refractive index C<inf>n</inf><sup>2</sup>in different meteorological conditions were measured by using the scintillation method. The measured maximum, minimum and mean value and the standard deviation of C<inf>n</inf><sup>2</sup>indicate that the range of C<inf>n</inf><sup>2</sup>is 1.06&times;10<sup>-15</sup>m<sup>-2/3</sup>~ 1.05&times;10<sup>-13</sup>m<sup>-2/3</sup>of the experimental period, which belongs to moderate turbulence. Moreover, it also indicates that the fluctuation of C<inf>n</inf><sup>2</sup>in sunny day and sleet day are greater than overcast day and dust day. Furthermore, Rytov variance is analyzed by using the measured light intensity values. The results show that in sunny day, sleet day and dust day, the light intensity fluctuation belongs to weak fluctuation at most of the time and there is a small part of the time it belongs to moderate fluctuation. However, the light intensity fluctuation in overcast day belongs to weak fluctuation in all time. The light intensity fluctuation in sunny day and sleep day are greater than overcast day and dust day. We can conclude that the probability distribution of light intensity in different meteorological conditions is closest to the exponential weibull distribution by comparing the nonlinear fitting results of the logarithmic normal, Gamma-Gamma and exponential Weibull distribution. The goodness of exponential Weibull distribution is greater than 0.989 95. In the weak to medium fluctuation region, the Gamma-Gamma distribution fits better than the lognormal distribution.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Weibull distribution

Controlled terms:Atmospheric structure - Dust - Light polarization - Light transmission - Probability distributions - Refractive index - Scintillation - Turbulence

Uncontrolled terms:Atmospheric structure constant of refractive indices - Experimental investigations - Exponential Weibull distribution - Laser transmission - Light intensity fluctuations - Rytov variance - Statistical characteristics - Turbulence intensity

Classification code:443.1  Atmospheric Properties - 451.1  Air Pollution Sources - 741.1  Light/Optics - 922.1  Probability Theory - 922.2  Mathematical Statistics

Numerical data indexing:Size 6.10e+02m

DOI:10.3788/gzxb20184704.0401001

Funding Details: Number; Acronym; Sponsor: 61265003; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61465007; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 6>

Accession number:20182105217765

Title:Non-interence Phase Retrieval Algorithm with Two Wavelength Illumination

Authors:Cheng, Hong (1); Gao, Yao-Li (1); Xu, Shan-Shan (2); Deng, Hui-Long (1); Wei, Sui (1)

Author affiliation:(1) Key Laboratory of Intelligent Computing &amp; Signal Processing Ministry of Education, School of Electronics and Information Engineering, Anhui University, Hefei; 230601, China; (2) Eleven Department, PLA Army Academy of Artillery and Air Defense, Hefei; 230031, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0407002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Aiming at the limitation of the original non-interfering phase retrieval technique based on the Transport of Intensity Equation(TIE) which is only suitable for the short distance regions propagation under single wavelength condition, a phase retrieval algorithm based on TIE method under a two wavelength illumination condition is proposed. The algorithm takes into account the correlation constraints between the two phases under two separate wavelength and the concept of synthetic wavelength is introduced. Meanwhile, considering the limitation of phase retrieval accuracy at longer distance transmission, a two wavelength hybrid iterative algorithm is proposed by combining the aforementioned algorithm with the angular iterative algorithm. The experimental results show that the error of phase diagram retrieved by the two-wavelength TIE algorithm is reduced to 0.191 2 on average; the error of phase diagram retrieved by the proposed two wavelength hybrid iterative algorithm is reduced to 0.220 2 on average. The proposed algorithm can effectively recover the phase information under two wavelength illuminations and is not limited by the distance.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Iterative methods

Controlled terms:Phase diagrams - Spectrum analysis

Uncontrolled terms:Angular spectra - Phase retrieval - Synthetic wavelength - Transport of intensity equation (TIE) - Two wavelength

Classification code:921.6  Numerical Methods

DOI:10.3788/gzxb20184704.0407002

Funding Details: Number; Sponsor: 1608085QF161; Natural Science Foundation of Anhui Province - Number; Acronym; Sponsor: 61301296; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61377006; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61501001; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61605002; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 7>

Accession number:20182105217762

Title:Rapid Calibration Method of Intrinsic Parameters for DIY 3D Laser Scanner

Authors:Zong, Wen-Peng (1, 2); Li, Guang-Yun (1, 2); Zhou, Yang-Lin (1, 2); Wang, Li (1, 2); Li, Ming-Lei (1, 2)

Author affiliation:(1) School of Navigation and Aerospace Engineering, Information Engineering University, Zhengzhou; 450001, China; (2) National Key Laboratory of Geo-Information Engineering, Xi'an; 710054, China

Corresponding author:Li, Guang-Yun(guangyun_li@sohu.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0412002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A calibration method of intrinsic parameters was proposed, which aimed at optimizing both the flatness and the area of planar patches detected from the point cloud. Either region growing algorithm or improved Random Sample Consensus (RANSAC) algorithm was chosen to extract planes according to different cases. A hybrid optimization algorithm (i.e. NMS-ABC) integrating the Nelder-Mead Simplex algorithm with the Artificial Bees Colony algorithm was proposed to calculate parameters, by means of which the intrinsic calibration of the DIY system was successfully implemented. Simulation experiments were performed using synthetic data based on known intrinsic parameters, which demonstrated the efficiency of NMS-ABC hybrid algorithm. Actual calibration experiments were conducted with multiple groups of point cloud data acquired in different scenes. Results indicate that both the percentage of planar inliers and the total flatness are improved after calibration. Besides, the calibration results will be more stable and reliable when the number of detected planes is not less than 3. Position precision test was conducted, and position precision of the DIY scanner was improved to the level of 3 mm@4 m after calibration. By increasing installation errors artificially and then contrasting point coulds as well as extracted planes before and after calibration, it is visually validated that the proposed calibration method is correct and effective.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:22

Main heading:Parameter estimation

Controlled terms:Calibration - Laser applications - Linear programming - Scanning

Uncontrolled terms:3D laser scanners - Artificial bees - Calibration experiments - Hybrid optimization algorithm - Nelder-mead simplex - Nelder-mead simplex algorithms - Random sample consensus (RANSAC) algorithm - Region growing algorithm

Classification code:744.9  Laser Applications

DOI:10.3788/gzxb20184704.0412002

Funding Details: Number; Acronym; Sponsor: 41274014; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 41501491; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 8>

Accession number:20182105217753

Title:High Stability Four-lane Integrated Laser Module with Different Frequency in the Same Spectrum

Authors:Tan, Jun (1, 2); Mu, Chun-Yuan (1); Wang, Yue-Hui (1, 2); Yu, Hai-Yang (1, 2); Zhao, Ze-Ping (1, 2); Chen, Wei (1); Liu, Jian-Guo (1, 3); Zhu, Ning-Hua (1, 2)

Author affiliation:(1) State Key Laboratory of 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; (3) School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Chen, Wei(wchen@semi.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0414001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to satisfy the application requirements of high-speed free-space coherent optical communication, the high stability four-lane integrated laser module with different frequency in the same spectrum was fabricated. The method of the gradient feedback control was proposed and it distinguish control cases with five levels which were set by the feedback values of temperature. The current and temperature of each lane are controlled step by step based on the priority order in this method and that will reduce the temperature drift, the current jitter and the influence of servo system on the linewidth of lasers. This method was applied to the module and it needed the more accurate feedback values of the temperature. Hence, the passive feedback amplifying circuit of the temperature was adopted and it can eliminate the deviation caused by the current component. The temperature drift and the current jitter which were less than 0.001 &#8451; and 0.6 &mu;A, respectively, were tested. After being integrated into the module, the Lorentzian linewidth of four external cavity diode lasers were 4.5-7.5 kHz and the Allan variances were all less than 4&times;10<sup>-9</sup>. In the Free-Space Optical (FSO) communication, the bit error rates of four modulation formats were tested with four lasers in the module and the ultra-high speed free-space coherent optical communication with 4&times;50 Gb/s 16QAM was demonstrated. The experimental results show that the four-lane integrated module has a wide application prospect in the FSO communication.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Optical communication

Controlled terms:Feedback control - Jitter - Linewidth - Quadrature amplitude modulation - Semiconductor lasers

Uncontrolled terms:16QAM - Allan variance - Free Space Optical communication - Integrated module - Temperature drifts

Classification code:717.1  Optical Communication Systems - 731.1  Control Systems - 744.4.1  Semiconductor Lasers - 931.3  Atomic and Molecular Physics

Numerical data indexing:Electric_Current 6.00e-07A, Frequency 4.50e+03Hz to 7.50e+03Hz

DOI:10.3788/gzxb20184704.0414001

Funding Details: Number; Acronym; Sponsor: 61675196; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 9>

Accession number:20182105217775

Title:Experiment of Optical Response Characteristics of Plastic Optical Fibers under Shear and Torsion Loading

Authors:Bao, Teng-Fei (1, 2); Zhao, Jin-Lei (3); Li, Jian-Ming (1, 2)

Author affiliation:(1) State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing; 210098, China; (2) College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing; 210098, China; (3) Jiangsu Surveying and Design Institute of Water Resources Co. Ltd, Yangzhou; Jiangsu; 225127, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0406001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Experiments to study the optical response characteristics of plastic optical fibers under shear and torsion conditions are conducted respectively which are correspond to the conditions when sliding type and tearing type cracks occurred in structures. Results indicate that during the process when the shear displacement increase from 0 to 0.5 mm, the optical loss and Fresnel reflection are linear related to the shear displacement, and the sensitivity of which are 15.6 dB/mm and 5.9 dB/mm respectively, indicating that plastic optical fibers have better optical sensibility to cracks under shear loading conditions, while the sensitivity is low under torsion loading, the optical loss of which is about 1 dB. It can be concluded that plastic optical fibers have the same optical response characteristics when sliding mode or tearing mode cracks occurred in structures. Both Fresnel reflection and optical loss can be used as crack monitoring index among which optical loss is considered to be more sensitive.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Loading

Controlled terms:Fiber optic sensors - Optical fibers - Optical losses - Plastic optical fibers - Plastics - Torsional stress

Uncontrolled terms:Crack monitoring - Fresnel reflections - Optical response - Shear displacement - Shear loading conditions - Sliding modes - Tearing modes - Time domain

Classification code:691.2  Materials Handling Methods - 741  Light, Optics and Optical Devices - 741.1.2  Fiber Optics - 817.1  Polymer Products

Numerical data indexing:Decibel 1.00e+00dB, Size 0.00e+00m to 5.00e-04m

DOI:10.3788/gzxb20184704.0406001

Funding Details: Number; Acronym; Sponsor: 41323001; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51379068; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51479054; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51579086; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51739003; NSFC; National Natural Science Foundation of China - Number; Sponsor: BK20140039; Natural Science Foundation of Jiangsu Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 10>

Accession number:20182105217771

Title:Image Super-resolution Based on Tiny Recurrent Convolutional Neural Network

Authors:Ma, Hao-Yu (1); Xu, Zhi-Hai (1); Feng, Hua-Jun (1); Li, Qi (1); Chen, Yue-Ting (1)

Author affiliation:(1) State Key Laboratory of Modern Optical Instrumentation, College of Optical Engineering, Zhejiang University, Hangzhou; 310027, China

Corresponding author:Xu, Zhi-Hai(xuzh@zju.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0410004

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A super-resolution algorithm via tiny recurrent convolutional neural network was proposed on the basis of the principles of image degradation. The proposed model has very few parameters when compared to super-resolution algorithms based on naive statistical learning. Model parameters of the proposed model have their specific physical meanings because corresponding image degradation model is introduced and regularizes the proposed model implicitly. This paper also provides an inner view of the related parameters of the algorithm and how these parameters influence the performance of the algorithm. As a result, the proposed model can achieve better performance in terms of running speed and peak signal noise ratio, comparing to current iterative backprojection algorithm. The result illustrates that the proposed algorithm only takes about 75% time consumpion, but improves the peak signal noise ratio by 0.2 dB comparing to conventional backprojection algorithm and 1.2 dB improvement comparing to bilinear interpolation respectively.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:15

Main heading:Parameter estimation

Controlled terms:Convolution - Image reconstruction - Iterative methods - Optical resolving power - Recurrent neural networks - Signal noise measurement

Uncontrolled terms:Backprojection algorithms - Convolutional neural network - Image degradation model - Image super resolutions - Iterative back projections - Low-level vision - Super resolution - Super resolution algorithms

Classification code:716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 921.6  Numerical Methods

Numerical data indexing:Decibel 1.20e+00dB, Decibel 2.00e-01dB, Percentage 7.50e+01%

DOI:10.3788/gzxb20184704.0410004

Funding Details: Number; Acronym; Sponsor: 61475135; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 11>

Accession number:20182105217750

Title:Fail-safe Optimal Design of Uniform Illumination for UV-LED Array

Authors:Cai, Wen-Tao (1); Yin, Shao-Yun (1); Xiang, Yang (1); Sun, Xiu-Hui (1); Du, Chun-Lei (1); Yang, Ruo-Fu (1)

Author affiliation:(1) The Center of Integrated Optoelectronic technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 300417, China

Corresponding author:Yang, Ruo-Fu(yang_ruofu@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0422002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:For weakening or eliminating the effect on uniformity, the method of uniform light accumulation based on fly-eye lens was presented. At first, illumination uniformity is designed for one LED. Then the same uniform light spot can be generated on the target surface from every LED, according to the study of LED position error. Next, An exposure light source is designed by a simulation optimization software. The maximum illuminance is 18.2 mW/cm<sup>2</sup>while the uniformity is 86.9%, which meeting the exposure requirements fully. At last, an experiment is made to test the illumination uniformity with the method of blocking LEDs. The result shows that a few invalid LEDs cause less than 1% decease of uniformity. Even half of invalid LEDs lead to a result that uniformity declines by less than 5%. Thus, this method better suits actual manufacture than others by maintaining illumination uniformity for a long period.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:18

Main heading:Light emitting diodes

Controlled terms:Computer software - Inertial confinement fusion - Optical design

Uncontrolled terms:Exposure - Fail safes - Illumination uniformity - Optimal design - Position errors - Simulation optimization - Target surface - Uniform illumination

Classification code:714.2  Semiconductor Devices and Integrated Circuits - 723  Computer Software, Data Handling and Applications - 741.1  Light/Optics - 932.2.1  Fission and Fusion Reactions

Numerical data indexing:Percentage 1.00e+00%, Percentage 5.00e+00%, Percentage 8.69e+01%, Surface_Power_Density 1.82e+02W/m2

DOI:10.3788/gzxb20184704.0422002

Funding Details: Number; Acronym; Sponsor: 61475199; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61605208; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: cstc2015zdcy-ztzx70006; CSTC; Chongqing Science and Technology Commission

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 12>

Accession number:20182105217757

Title:Reduction of Graphene Oxide by Laser with Different Wavelengths

Authors:Xie, Lei (1); Lei, Xiao-Hua (1); Tan, Xiao-Gang (1); Liu, Xian-Ming (1); Deng, Yi-Jun (1); Chen, Wei-Min (1)

Author affiliation:(1) Key Laboratory of Optoelectronic Technology &amp; Systems Ministry of Education, College of Opto-electronic Engineering, Chongqing University, Chongqing; 400044, China

Corresponding author:Lei, Xiao-Hua(xhlei@cqu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0431003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The 488 nm, 518 nm and 637 nm lasers in visible wavelength band were used to carry out the light reduction experiment on the graphene oxide samples. Meanwhile the transmittance and resistance of reduced graphene oxide were measured in real time to investigate effect of laser with different wavelengths on reduction of graphene oxide. The results show that the transmittance and resistivity of reduced graphene oxide appear different variation under different wavelengths laser irradiation. When 488 nm laser is used, the sample can be reduced though under the condition of low power density, and the reduction process is in accordance with the photochemical reaction. When using 518 nm and 637 nm laser, only when the laser power density is greater than a certain threshold, can the graphene oxide be reduced; longer the laser wavelength, higher the power threshold; and the reduction process conforms to photothermal reaction. The results can pave a way for the improvement of the patterning process of graphene film.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:26

Main heading:Graphene

Controlled terms:Graphene oxide - Photochemical reactions

Uncontrolled terms:Laser power density - Photo-thermal - Photochemical reduction - Photothermal reactions - Power density threshold - Reduced graphene oxides - Visible spectra - Visible wavelengths

Classification code:741.1  Light/Optics - 761  Nanotechnology - 804  Chemical Products Generally

Numerical data indexing:Size 4.88e-07m, Size 5.18e-07m, Size 6.37e-07m

DOI:10.3788/gzxb20184704.0431003

Funding Details: Number; Acronym; Sponsor: 61405019; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 13>

Accession number:20182105217774

Title:Design of Polychromator and Technical Implementation of Daytime Raman Lidar for Atmospheric Water Vapor Measurement

Authors:Gao, Fei (1); Lei, Ning (1); Huang, Bo (1); Zhu, Qing-Song (1); Shi, Dong-Chen (1); Wang, Li (1); Wang, Yu-Feng (1); Yan, Qing (1); Liu, Jing-Jing (1); Hua, Deng-Xin (1)

Author affiliation:(1) School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an; 710048, China

Corresponding author:Hua, Deng-Xin(dengxinhua@xaut.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0401003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to achieve the water vapor measurement in day and night time, the quadruple frequency of Nd:YAG pulsed laser is selected as the transmitter in the construction of solar-blind Raman lidar. Due to the Ozone pollution in the lower atmosphere, besides the detection of the vibrational Raman signals of nitrogen and water vapor, exmaination of the vibrational Raman signal of oxygen is necessary for retrieving the Ozone concentraiton from the ground to the height of interest, which can be used as the solution for correcting the Raman lidar equation. Meanwhile, the high-resolution grating and tunable laser mirrors are selected to construct the grating spectormeter for the separation of the vibrational Raman signals of oxygen, nitrogen and water vapor. The simulation results show that the vibrational Raman siganls of oxygen, nitorgen and water vapor can be extracted finely when the incident angle of the grating spectrometer is set to be 10 deg, and the solar blind Raman lidar can achieve the water vapor measurement up to the height of 2 km.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Water vapor

Controlled terms:Laser mirrors - Neodymium lasers - Nitrogen - Optical radar - Ozone - Pulsed lasers - Raman spectroscopy - Spectrometers - Water absorption - Water pollution  - Yttrium aluminum garnet

Uncontrolled terms:Atmospheric water vapor - Daytime - Grating spectrometers - Nd:YAG pulsed laser - Ozone absorption - Raman LIDAR - Technical implementation - Water vapor measurement

Classification code:453  Water Pollution - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 744.4  Solid State Lasers - 802.3  Chemical Operations - 804  Chemical Products Generally

Numerical data indexing:Size 2.00e+03m

DOI:10.3788/gzxb20184704.0401003

Funding Details: Number; Sponsor: 2014M560799; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 41305023; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 41627807; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 41775035; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 14>

Accession number:20182105217764

Title:Research of Phase Retrieval Method in Laser Reflective Tomography Imaging

Authors:Yang, Biao (1, 2); Hu, Yi-Hua (1, 2); Lin, Fang (1, 2)

Author affiliation:(1) State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute, Hefei; 230037, China; (2) Anhui Province Key Laboratory of Electronic Restriction, Electronic Engineering Institute, Hefei; 230037, China

Corresponding author:Hu, Yi-Hua(skl_hyh@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0407001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The moving and jitter of the target will lead to the rotation of the center of rotation in the process of laser reflection tomography. This will lead to reconstruction image dislocation and artifact, a modified error reduction algorithm based on phase recovery technology was proposed. Firstly, the phase information of reconstructed target was obtained through iterative iteration of light intensity. In addition, the convergence of algorithm was also effectively improved by increasing the initial constraints and the constraints in the spatial and frequency domains. This method can effectively improve the easy to fall into the local minima problem and phase recovery method for image reconstruction optimization is obtained. The simulation experiments show that the mean square error of the three sets of reconstructed images is reduced from 0.774 to 0.551, and the image reconstruction artifact can be effectively eliminated. The experimental results also show that the resolution of the laser reflective tomography system is improved.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Image reconstruction

Controlled terms:Errors - Image enhancement - Image resolution - Imaging systems - Iterative methods - Mean square error - Tomography

Uncontrolled terms:Error reduction - Imaging resolutions - Local minima problems - Phase retrieval - Reconstruction artifacts - Reconstruction image - Reflective tomographies - Spatial and frequency domain

Classification code:746  Imaging Techniques - 921.6  Numerical Methods - 922.2  Mathematical Statistics

DOI:10.3788/gzxb20184704.0407001

Funding Details: Number; Acronym; Sponsor: 61271353; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 15>

Accession number:20182105217769

Title:Natural-appearance Colorization and Enhancement for the Low-light-level Night Vision Imaging

Authors:Zhu, Jin (1); Li, Li (1); Jin, Wei-Qi (1, 2); Li, Shuo (1); Wang, Xia (1); Bai, Xiao-Feng (2)

Author affiliation:(1) MOE Key Laboratory of Optoelectronic Imaging Technology and System, School of Optics and Photonics, Beijing Institute of Technology, Beijing; 100081, China; (2) Science and Technology on Low-Light-Level Night Vision Laboratory, Xi'an; 710059, China

Corresponding author:Li, Li(lili@bit.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0410002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The output video of the low-light-level solid-state imaging devices are always gray. For better low-light-level imaging applications, a natural-appearance colorization and enhancement method named Luminance Stretching Color Transfer (LSCT) for grayscale video images using color transfer is proposed. A two-channel natural-appearance color fusion method is refered to in the LSCT method. In order to achieve the natural-appearance colorization and enhancement, firstly, the pre-colorized image is obtained by combining the grayscale image with its negative image. Following this, an adaptive luminance stretching is performed and color of the reference image is transferred in the YUV color space. As compared with other methods based on color transfer, the LSCT method is less affected by the degree of similarity between the reference image and the original grayscale image. It means that relatively good results may be achieved for most scenes with an appropriate reference image. Thus, the LSCT method has better environmental adaptability. The comparisons reveal that the LSCT method is high efficient and its colorized results appear more natural in respect to human perception with better contrast and color harmony. Moreover, the LSCT method has been implemented in real time on hardware platforms.Therefore, it can effectively improve the effect of human observation to apply our method in the low-light-level imaging without increasing any hardware costs.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:21

Main heading:Color image processing

Controlled terms:Color - Hardware - Image enhancement - Luminance - Vision

Uncontrolled terms:Color night vision - Color transfers - Degree of similarity - Environmental adaptability - Low light level - Low light level imaging - Low light level night visions - Realtime imaging

Classification code:605  Small Tools and Hardware - 741.1  Light/Optics

DOI:10.3788/gzxb20184704.0410002

Funding Details: Number; Acronym; Sponsor: 61405013; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 16>

Accession number:20182105217759

Title:Design of Triple-mesa InGaAs/InP Avalanche Photodiode with Low Edge Electric Field

Authors:Zhu, Shuai-Yu (1); Xie, Sheng (1); Chen, Yu (2)

Author affiliation:(1) Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, School of Microelectronics, Tianjin University, Tianjin; 300072, China; (2) Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100084, China

Corresponding author:Xie, Sheng(xie_sheng06@tju.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0423002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To eliminate the edge breakdown and reduce the dark current of conventional InGaAs/InP avalanche photodiode, a novel avalanche photodiode with triple-mesa structure was proposed. The effects of edge distance, doping concentration and thickness of charge layer and multiplication layer on the device performance were systematically investigated by a commercial simulator. The simulation results shown that the device was possessed of low edge electric field and reasonable device size, when the edge distance was 8 &mu;m. In this design, the high electric field was confined within the center of device and the breakdown voltage was improved. The edge electric field of optimized device was only 2.6&times;10<sup>5</sup>V/cm, which was a half of central region at 40 V reverse voltage. What's more, it can reduce dark current to 9.25 pA at 0.9 V<inf>br</inf>, which was only 1/3 for the dark current of traditional double-mesa avalanche photodiode.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Photodiodes

Controlled terms:Avalanche photodiodes - Dark currents - Electric breakdown - Gallium compounds - Semiconducting indium - Semiconducting indium gallium arsenide

Uncontrolled terms:Commercial simulators - Device performance - Doping concentration - High electric fields - InGaAs - InGaAs/InP avalanche photodiodes - Punch-through - Triple-mesa

Classification code:701.1  Electricity: Basic Concepts and Phenomena - 711.2  Electromagnetic Waves in Relation to Various Structures - 712.1.1  Single Element Semiconducting Materials - 712.1.2  Compound Semiconducting Materials

Numerical data indexing:Electric_Current 9.25e-12A, Size 8.00e-06m, Voltage 4.00e+01V

DOI:10.3788/gzxb20184704.0423002

Funding Details: Number; Acronym; Sponsor: 11673019; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 17>

Accession number:20182105217770

Title:Exposure Correction and Detail Enhancement for Single LDR Image

Authors:Chang, Meng (1); Feng, Hua-Jun (1); Xu, Zhi-Hai (1); Li, Qi (1)

Author affiliation:(1) State Key Laboratory of Modern Optical Instruments, Zhejiang University, Hangzhou; 310027, China

Corresponding author:Feng, Hua-Jun(fenghj@zju.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0410003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:This paper presents a method of single low dynamic range image exposure correction, which enhances details in over-/under-exposed areas. Firstly, over-exposed areas and under-exposed areas are corrected respectively. In the under-exposed area, WLS filter is used to decompose the images into illumination map and reflection map, which enhances the brightness and contrast; In the over-exposed area, dark brightness is proposed to characterize the degree of over exposure and the Retinex model is extend to compress the brightness and to enhance details. After the corrected images are fused using the proposed fusion algorithm based on saliency, the multi-region enhancement image is obtained. The results of several methods are compared by using two common image quality evaluation indexes. Experiments show that the indexes of our results are superior to other results. In addition, in the comparison of visual effects, the proposed method can obtain the correction image with rich details and high color reproduction.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Image enhancement

Controlled terms:Color photography - Facsimile - Image fusion - Luminance

Uncontrolled terms:Computational photography - Contrast Enhancement - Exposure correction - High dynamic range - Retinex

Classification code:718.3  Facsimile Systems and Equipment - 723.2  Data Processing and Image Processing - 742.1  Photography

DOI:10.3788/gzxb20184704.0410003

Funding Details: Number; Acronym; Sponsor: 61475135; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 18>

Accession number:20182105217768

Title:Near-infrared Image Simulation Based on Spectral Correlation Method

Authors:Wu, Hong-Yu (1); Wang, Ling-Li (1); Zhong, Xing (1, 2); Su, Zhi-Qiang (1); Chen, Guan-Zhou (3); Bai, Yang (1, 2)

Author affiliation:(1) Changguang Satellite Technology Co., Ltd., Changchun; 130051, China; (2) Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun; 130033, China; (3) State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan; 430079, China

Corresponding author:Bai, Yang(baiy776@163.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0410001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A near-infrared image simulation method based on spectral correlation is proposed. The remote sensing image-link model, and spectral correlation between visible multispectral and panchromatic for satellite sensors were analyzed, and the spectral correlation coefficient was calculated. Thus the simulation near-infrared image was generated based on the spectral correlation coefficient. In order to improve the speed of near-infrared image generation, the SIFT algorithm based on GPU was used. The proposed method utilized the data of Jilin-1A optical sensor to generate the simulation near-infrared images. The computation time of individual image was better than 3 s, and the simulation image had better effects for synthesis of true color image and removal of cloud and haze.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:16

Main heading:Image enhancement

Controlled terms:Infrared devices - Infrared imaging - Remote sensing

Uncontrolled terms:Near- infrared images - Remote sensing images - SIFT algorithms - Spectral correlation - True colors

Classification code:746  Imaging Techniques

Numerical data indexing:Time 3.00e+00s

DOI:10.3788/gzxb20184704.0410001

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 19>

Accession number:20182105217754

Title:Compact Frequency Stabilized Laser for Optically Pumped Cs Beam Clocks

Authors:Shi, Hao (1, 2); Ma, Jie (1); Li, Xiao-Feng (1); Liu, Jie (1); Zhang, Shou-Gang (1)

Author affiliation:(1) Key Laboratory of Time and Frequency Standards, National Time Server Center, Chinese Academy of Sciences, Xi'an; 710600, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China

Corresponding author:Zhang, Shou-Gang(szhang@ntsc.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0414002

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A frequency stabilized laser used in optically pumped cesium beam clocks is designed. The concise saturated absorption frequency stabilization system, in which the polarization direction of pumping laser is perpendicular to the polarization direction of probing laser, is utilized to lock laser frequency. The transition probability of the cesium atom is improved by the adjustment of the polarization direction of pumping laser. The amplitude of reference signal produced by the proposed system is higher than the signal produced by the simplified saturated absorption frequency stabilization system. When laser is locked at the frequency of the cycling transition 6S<inf>1/2</inf>, F=4&rarr;6P<inf>3/2</inf>, F=5 of cesium, the frequency stability is measured as 1.88&times;10<sup>-11</sup>at 100 s. The setup of the system is compact, which is beneficial to the miniaturization and engineering of the optically pumped cesium beam clocks.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:20

Main heading:Optically pumped lasers

Controlled terms:Absorption spectroscopy - Atom lasers - Cesium - Clocks - Frequency stability - Locks (fasteners) - Optical design - Polarization - Pumping (laser) - Semiconductor lasers  - Stabilization

Uncontrolled terms:Frequency stabilized lasers - Laser frequency - Laser frequency stabilization - Optically pumped - Polarization direction - Reference signals - Saturated absorptions - Transition probabilities

Classification code:549.1  Alkali Metals - 741.1  Light/Optics - 744.1  Lasers, General - 744.4.1  Semiconductor Lasers - 943.3  Special Purpose Instruments - 961  Systems Science

Numerical data indexing:Time 1.00e+02s

DOI:10.3788/gzxb20184704.0414002

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 20>

Accession number:20182105217751

Title:Improving the Imaging Performance of Plasmonic Structured Illumination Microscopy Using MAP Estimation Method

Authors:Yu, Mu-Xin (1); Zhou, Wen-Chao (1); Wu, Yi-Hui (1)

Author affiliation:(1) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun; 130033, China

Corresponding author:Wu, Yi-Hui(yihuiwu@ciomp.ac.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0422003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The classical restoration algorithm can not effectively recover the full frequency domain information of the object, which leads to the serious optical sidelobes. In this paper, the application of metal nano arrays in structured light illumination is studied, and the problem of optical sidelobes in plasmonic structured illumination microscopy is solved using Maximum A Posteriori (MAP) estimation. The research shows that the MAP estimation method can effectively restore the high spatial frequency information, and through the reasonable selection of optimization parameters to achieve the purpose of suppressing optical sidelobes. At the wavelength of 520 nm, 1.3 numerical aperture, the lateral resolution can be obtained at FWHM of 65 nm, which is about 3.6 times of the traditional fluorescence microscope. This technology has potential application application in the field of life science.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:27

Main heading:Frequency estimation

Controlled terms:Fluorescence - Fluorescence microscopy - Frequency domain analysis - Image reconstruction - Microscopic examination - Plasmonics - Restoration - Surface plasmons

Uncontrolled terms:High spatial frequency - Image reconstruction techniques - Maximum a posteriori estimation - Metal optics - Optimization parameter - Restoration algorithm - Structured illumination microscopy - Super resolution

Classification code:741.1  Light/Optics - 746  Imaging Techniques - 921.3  Mathematical Transformations - 931.4  Quantum Theory; Quantum Mechanics

Numerical data indexing:Size 5.20e-07m, Size 6.50e-08m

DOI:10.3788/gzxb20184704.0422003

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 21>

Accession number:20182105217756

Title:Optimizational 1.8 &mu;m Emission of Na<inf>5</inf>Lu<inf>9</inf>F<inf>32</inf>Single Crystal Doped with Tm<sup>3+</sup>Ions

Authors:Sheng, Qi-Guo (1); Xia, Hai-Ping (1); Tang, Qing-Yang (1); He, Shi-Nan (1); Zhang, Jian-Li (1); Chen, Bao-Jiu (2)

Author affiliation:(1) Key Laboratory of Photoelectronic Materials, Ningbo University, Ningbo; Zhejiang; 315211, China; (2) Department of Physics, Dalian Maritime University, Dalian; Liaoning; 116026, China

Corresponding author:Xia, Hai-Ping(hpxcm@nbu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0431002

Language:English

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The high quality Na<inf>5</inf>Lu<inf>9</inf>F<inf>32</inf>single crystals with different Tm<sup>3+</sup>concentrations ranging from 0.5 to 4 mol% were grown successfully by an improved Bridgman method. The fluorescence spectra and decay curves at 1.86 &mu;m were measured under the excitation of 790 nm LD to study the luminescent properties of the crystals and the energy transfer process between Tm<sup>3+</sup>ions. The 1.86 &mu;m emission intensity gradually increases to the maximum value when the Tm<sup>3+</sup>concentration increases to around 1.95 mol%. Nevertheless, it decreases fleetly with the Tm<sup>3+</sup>concentration further increase from 2.0 mol% to 4.0 mol%. The maximum stimulated emission cross section at 1.86 &mu;m is also calculated to 0.80&times;10<sup>-20</sup>cm<sup>2</sup>. The 1.86 &mu;m fluorescence lifetime of Tm<sup>3+</sup>&#8758;<sup>3</sup>F<inf>4</inf>level decreases with the increase of Tm<sup>3+</sup>doping concentration. The concentration quenching effect of Tm<sup>3+</sup>ions and the cross relaxation energy transfer process between Tm<sup>3+</sup>ions are mainly in charge of the variety of the 1.86 &mu;m emission.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:19

Main heading:Fluorine compounds

Controlled terms:Chromium compounds - Crystal growth from melt - Energy transfer - Fluorescence - Ions - Lutetium compounds - Relaxation processes - Single crystals - Sodium compounds - Thulium compounds

Uncontrolled terms:Concentration quenching effect - Cross relaxation energy transfer - Cross-relaxation process - Doping concentration - Energy transfer process - Fluorescence lifetimes - Fluorescence spectra - Stimulated emission cross section

Classification code:741.1  Light/Optics - 931.1  Mechanics - 933.1  Crystalline Solids - 933.1.2  Crystal Growth

Numerical data indexing:Size 1.80e-06m, Size 1.86e-06m

DOI:10.3788/gzxb20184704.0431002

Funding Details: Number; Acronym; Sponsor: 51472125; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51772159; NSFC; National Natural Science Foundation of China - Number; Sponsor: LZ17E020001; Natural Science Foundation of Zhejiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 22>

Accession number:20182105217760

Title:Design of the Aperture Coupled Multi-functional Asymmetric Semi-circular Cavity Filter Based on Surface Plasmon Polaritons

Authors:Wang, Zhi-Shuang (1); Zhang, Guan-Mao (1); Liu, Hai-Rui (1); Qiao, Li-Tao (1)

Author affiliation:(1) Institute of Modern Communication Technology, School of Information Science and Engineering, Lanzhou University, Lanzhou; 730000, China

Corresponding author:Zhang, Guan-Mao(zhanggm@lzu.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0423003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:A metal-insulator-metal asymmetric structure filter is proposed based on the aperture coupled method, which is composed of two semi-circular cavities, a waveguide and two rectangular apertures connecting the semi-circular cavities and the waveguide. The finite element method is used to simulate and calculate its magnetic field distribution, transmission spectra, bandwidth and edge steepness distribution curves. The results show that the obvious red shift or blue shift phenomenon will be occurred in the transmission curve when the structure parameters are adjusted, and the transmission curve is very smooth. Its pass-band's transmittance can reach 0.95, its stop-band has the flat characteristics and the transmittance is as low as 0.001. Besides, its pass-band and stop-band all have a wide bandwidth. After optimizing the structure parameters, the filter can realize a similar function of the rectangular filter and the filtering function of channel selection of the three optical communication windows at telecommunication regime. The proposed filter can be well applied in the micro/nano optical integrated devices, especially in optical communication systems.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:29

Main heading:Waveguide filters

Controlled terms:Bandpass filters - Bandwidth - Electromagnetic wave polarization - Finite element method - Metal insulator boundaries - Metals - MIM devices - Optical communication - Phonons - Photons  - Semiconductor insulator boundaries - Surface plasmon resonance - Surface plasmons

Uncontrolled terms:Aperture coupled - Metal-insulator-metal structures - Resonance cavities - Surface plasmon polaritons - Transmission spectrums

Classification code:703.2  Electric Filters - 711  Electromagnetic Waves - 714.2  Semiconductor Devices and Integrated Circuits - 716.1  Information Theory and Signal Processing - 717.1  Optical Communication Systems - 921.6  Numerical Methods - 931.3  Atomic and Molecular Physics

DOI:10.3788/gzxb20184704.0423003

Funding Details: Number; Acronym; Sponsor: 61631007; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 23>

Accession number:20182105217767

Title:Multiple Angle-weighting Based on Mie Scattering Intensity in the Multiangle Dynamic Light Scattering

Authors:Huang, Yu (1); Shen, Jin (1); Xu, Min (1); Sun, Cheng (1); Wang, Ya-Jing (1); Liu, Wei (1); Mao, Shuai (1)

Author affiliation:(1) School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo; Shandong; 255049, China

Corresponding author:Shen, Jin(shenjin@sdut.edu.cn)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0429002

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:In order to solve the problem on the information utilization and noise reduction of angular weighting methods by Mie scattering calculation for multiangle dynamic light scattering, multiple angle-weighting method was proposed, in which the Mie scattering's spatial character of all granularities at each angle is as the angular weighting factor and that of each granularity is as the nuclear matrix weighting factor. By using this multiple angle-weighting method, the regularization inversions for both simulated and measured multiangle dynamic light scattering data were carried out. Compared with the inversion results of the light intensity ratio method and the light intensity mean method, the inversion results for multiangle dynamic light scattering are closely related to the angular weighting methods. In the absence of noise, the intensity ratio method and the multiple angle-weighting method can obtain accurate particle size distributions, but the information utilization for the light intensity mean method is not sufficient. With the increase of the noise level, the inversion results of the ratio of light intensity are rapidly getting worse, which shows the lower noise reduction capability. Multiple angle-weighting method, taking the information utilization and noise reduction capability into account, can better show the advantage for increase of information and effectively suppresses the noise influence when the scattering angles are increased. The method significantly improves the accuracy of particle measurement in the multiangle dynamic light scattering, especially for the multi-peak distribution particle system.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Inverse problems

Controlled terms:Angular distribution - Brillouin scattering - Dynamic light scattering - Noise abatement - Particle size - Particle size analysis - Size distribution

Uncontrolled terms:Angular weighting - Information utilization - Mie scattering - Mie scattering intensity - Multiangle dynamic light scattering - Particle measurement - Particle size measurement - Weighting methods

Classification code:741.1  Light/Optics - 751.4  Acoustic Noise - 922.2  Mathematical Statistics - 951  Materials Science

DOI:10.3788/gzxb20184704.0429002

Funding Details: Number; Sponsor: ZR2014FL027; Natural Science Foundation of Shandong Province - Number; Sponsor: ZR2016EL16; Natural Science Foundation of Shandong Province - Number; Sponsor: ZR2017LF026; Natural Science Foundation of Shandong Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 24>

Accession number:20182105217758

Title:Mid-infrared Quantum Cascade Laser Gas Detection System

Authors:Lin, Bai-Yang (1); Dang, Jing-Min (2); Zheng, Chuan-Tao (1); Zhang, Yu (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; (2) College of Biological and Agricultural 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:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0423001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:To meet the requirement of mid-infrared gas detection based on continuous Quantum Cascade Laser (QCL), a board-level QCL driver and a lock-in amplifier are developed. High-precision direct-current (DC) bias signal, low-frequency saw-tooth scan signal and high-frequency sine-wave modulation signal are generated by a signal generation circuit to control the laser current and scan/modulate laser output wavelength. The developed lock-in amplifier includes a multiple frequency circuit, an orthogonal conversion circuit, and a data-conversion circuit, which detects the second harmonic (2f) signal from the trace gas absorption signal and gains a high signal-to-noise ratio. In addition, in order to improve the stability and reliability of the system, a linear power supply with high stability and a high-performance protection circuit are designed. A QCL with a wavelength of 4.76 &mu;m developed by the Semiconductor Institute of Chinese Academy of Science is used as a light source, and function verification and gas detection experiments of the electrical system are carried out. The experimental results show that the linearity of laser driver is as high as 0.006 3%, the long-term current stability is 5.0&times;10<sup>-5</sup>, and the long-term power stability of QCL is 5.07&times;10<sup>-4</sup>. The lock-in amplifier has an average detection error on the first harmonic (1f) signal of less than 2.4% and an error on the 2f signal of less than 5.5%. Low-concentration carbon monoxide (CO) detection is carried out, and there is a high linearity (R<sup>2</sup>&gt;0.99) between the amplitude of 2f signal and CO gas concentration in the concentration range of 0-100 ppm. These results confirm that the developed electrical system has good stability and reliability, assuring a safe and reliable mid-infrared CO gas detection.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:19

Main heading:High frequency amplifiers

Controlled terms:Carbon monoxide - Data handling - Electric power systems - Gas absorption - Gas detectors - Gases - Infrared devices - Light sources - Locks (fasteners) - Optoelectronic devices  - Quantum cascade lasers - Signal to noise ratio - System stability

Uncontrolled terms:Chinese Academy of Sciences - Driving circuits - Gas detection - High signal-to-noise ratio - Lock-in amplifier - Mid-infrared quantum cascade - Midinfrared - Stability and reliabilities

Classification code:706.1  Electric Power Systems - 713.1  Amplifiers - 716.1  Information Theory and Signal Processing - 723.2  Data Processing and Image Processing - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 802.3  Chemical Operations - 804.2  Inorganic Compounds - 914.1  Accidents and Accident Prevention - 961  Systems Science

Numerical data indexing:Percentage 2.40e+00%, Percentage 5.50e+00%, Size 4.76e-06m

DOI:10.3788/gzxb20184704.0423001

Funding Details: Number; Acronym; Sponsor: 61307124; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61627823; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61775079; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 25>

Accession number:20182105217755

Title:Design and Fabrication of Broadband Discrete Extreme-ultraviolet Multilayer Based on Quantum State Genetic Algorithm

Authors:Kuang, Shang-Qi (1); Zhang, Chao (1); Li, Shuo (1); Yang, Hai-Gui (2); Huo, Tong-Lin (3); Zhou, Hong-Jun (3)

Author affiliation:(1) School of Science, Changchun University of Science and Technology, Changchun; 130022, China; (2) Advanced Manufacturing Technology for Optical Systems Laboratory, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun; 130033, China; (3) National Synchrotron Radition Laboratory, University of Science and Technology of China, Hefei; 230029, China

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0431001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:Quantum state genetic algorithm was applied into the discrete design of broadband extreme-ultraviolet multilayer to solve the problem of solving accuracy in genetic algorithm. And the discrete design of layer thickness can be achieved in the process of quantum state genetic algorithm. It solves the problem that the layer can be accurately fabricated when the magnetron sputtering system is controlled by the deposition time. According to the results designed by quantum state genetic algorithm, broadband extreme-ultraviolet multilayers have been fabricated by magnetron sputtering system. The measured results show two kinds of multilayers designed by quantum state genetic algorithm were fabricated, one has a reflectivity of more than 45% in the 0&deg;~15&deg; range of incidence angle, and the other reaches the reflectivity of more than 20% for the wavelength range from 13 nm to 15 nm. The relative work shows the potential value of quantum state genetic algorithm and offers another alternative optimizing algorithm in the field of broadband extreme-ultraviolet multilayer design. And then the algorithm can achieve the discrete design of multilayer, which makes fabricated multilayer have better spectral properties.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:26

Main heading:Quantum theory

Controlled terms:Fabrication - Genetic algorithms - Magnetron sputtering - Multilayers - Reflection

Uncontrolled terms:Extreme ultraviolet multilayers - Magnetron sputtering systems - Measured results - Multi-layer-coating - Optimizing algorithm - Quantum state - Spectral properties - Wavelength ranges

Classification code:931.4  Quantum Theory; Quantum Mechanics

Numerical data indexing:Percentage 2.00e+01%, Percentage 4.50e+01%, Size 1.30e-08m to 1.50e-08m

DOI:10.3788/gzxb20184704.0431001

Funding Details: Number; Acronym; Sponsor: 61405189; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 26>

Accession number:20182105217749

Title:Achromatic Lens Based on Liquid Crystal Spatial Light Modulator

Authors:Xu, Zhong-Bao (1); Tao, Wei-Sen (1); Wang, Shuang-Ying (1); Chen, Wei (1); Song, Cong-Shan (2); Jin, Wan-Hui (2); Gu, Ling-Ying (2); Wu, Qin (2); Liu, Feng-Ming (2)

Author affiliation:(1) School of Mechanical Engineering, Hubei University of Technology, Wuhan; 430068, China; (2) Hubei Province Fibre Inspection Bureau, Wuhan; 430060, China

Corresponding author:Tao, Wei-Sen(2216452115@qq.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0422001

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:The scalar diffraction theory has carried on the analysis to eliminate the axial chromatic aberration and the conditions of magnification chromatism. Using the programmable control features of phase-only liquid spatial light modulator, the Fresnel lenses with three colors of red, green and blue are inlaid with blazed gratings and programmed on a liquid crystal spatial light modulator by random equal probability multiplexing. So that a common focal length of the three-color optical multiplexing lens is achieved, and the axial chromatic aberration eliminated. At the same time, through the constraint of the red, green, blue three-color light-modulated Fresnel lens aperture, the three-color light has the same size and intensity of the focal spot radius at the focal plane, and the magnification chromatic aberration is eliminated. The experimental results show that the axial chromatic aberration and the chromatic aberration of the multiplexing lens are effectively corrected by this method, at three-color light, the Airy's radius is 67 pixels, which is close to the Airy's patch radius of 65 pixels produced by a monochromatic lens with the same focal length and resolution.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Aberrations

Controlled terms:Color - Light modulation - Light modulators - Liquid crystals - Optical instrument lenses - Pixels

Uncontrolled terms:Achromatic lens - Aperture constraints - Equal probability - Multi-wavelengths - Spatial light modulators

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

DOI:10.3788/gzxb20184704.0422001

Funding Details: Number; Acronym; Sponsor: 61077086; NSFC; National Natural Science Foundation of China

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

<RECORD 27>

Accession number:20182105217763

Title:Research on a Combination of Two Kinds of Phase-modulated Laser Doppler Shift Measurement Methods

Authors:Yang, Na (1); Du, Jun (2); Qu, Yan-Chen (3); Zhao, Wei-Jiang (3)

Author affiliation:(1) College of Electrical and Information Engineering, Heilongjiang Institute of Technology, Harbin; 150050, China; (2) College of Computer Science and Information Engineering, Harbin Normal University, Harbin; 150052, China; (3) National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin; 150080, China

Corresponding author:Du, Jun(dujun126@126.com)

Source title:Guangzi Xuebao/Acta Photonica Sinica

Abbreviated source title:Guangzi Xuebao

Volume:47

Issue:4

Issue date:April 2018

Publication year:2018

Article number:0412003

Language:Chinese

ISSN:10044213

CODEN:GUXUED

Document type:Journal article (JA)

Publisher:Chinese Optical Society

Abstract:This paper presents a novel laser Doppler shift measurement method. The propoed method uses the amplitude and phase of the phase-modulated beat signal as independent variables to define a new function and uses the function as a Doppler-shifted frequency-discriminating parameter. The purpose of the proposed method is to combine the two phase-modulated laser Doppler frequency shift measurement methods. In theory, the frequency-discriminating curve, the sensitivity curve and the error curve of the proposed method are respectively compared with the corresponding curves of the two types of phase-modulated methods. It is found that the propoed method not only inherits the working mode of the phase-modulated beat frequency signal amplitude method to measure the small frequency shift amount, but also absorbs the measurement ability of the phase-modulated beat frequency signal phase method to obtain higher measurement sensitivity and dynamic range. The hard-target reflected frequency-shifted controllable signal light is measured. The experimental results not only prove the correctness of the theory, but also prove that by adjusting the translation parameters, the dynamic range of the new method can be improved by about 26.8%, which is more suitable for measuring the high Doppler frequency shift.<br/> &copy; 2018, Science Press. All right reserved.

Number of references:17

Main heading:Frequency modulation

Controlled terms:Classifiers - Doppler effect - Fabry-Perot interferometers - Optical radar - Phase modulation

Uncontrolled terms:Beat frequency - Corresponding curve - Doppler frequency shift - Doppler-shifted frequencies - Independent variables - Measurement sensitivity - Sensitivity curves - Translation parameters

Classification code:716.2  Radar Systems and Equipment - 802.1  Chemical Plants and Equipment - 941.3  Optical Instruments

Numerical data indexing:Percentage 2.68e+01%

DOI:10.3788/gzxb20184704.0412003

Funding Details: Number; Sponsor: F2016030; Natural Science Foundation of Heilongjiang Province

Database:Compendex

Compilation and indexing terms, Copyright 2018 Elsevier Inc.

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