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<RECORD 1>
 
Accession number:20211110075432
Title:Investigation on secondary electron emission characteristics of double-layer structures
Authors:Wang, Dan (1); He, Yongning (1); Guo, Junjiang (2, 3, 4); Cai, Yahui (1); Mao, Zhangsong (1); Ye, Ming (1) 
Author affiliation:(1) School of Microelectronics, Xian Jiaotong University, Xian; 710049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China; (3) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, School of Electronics and Information Engineering, Xian Jiaotong University, Xian; 710049, China; (4) University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China 
Corresponding author:He, Yongning(yongning@mail.xjtu.edu.cn)
Source title:Journal of Applied Physics
Abbreviated source title:J Appl Phys
Volume:129
Issue:9
Issue date:March 7, 2021
Publication year:2021
Article number:093304
Language:English
ISSN:00218979
E-ISSN:10897550
CODEN:JAPIAU
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:Secondary electron (SE) emission (SEE) from material surfaces is a frequent phenomenon in space and vacuum environments. SEE modulation is important since it governs the performance of some devices such as electronic multipliers or induces some detrimental effects such as multipactors. Surface coating has been reported to modulate SEE effectively, whereas SEE behaviors of coating structures are not clearly understood yet, and the appropriate theory to describe SEE characteristics quantitatively for coating structures is less developed so far. Here, we have prepared four alumina coatings possessing various thicknesses to research the SEE characteristics of coating structures and have shown how the coating thickness affects the SEE behaviors. Besides, by considering coating/substrate as an ideal double-layer structure, we have derived several equations to describe the producing, transmitting, and escaping processes of excited inner SEs and finally constructed a unidimensional SEE model for double-layer structures. The model is applicable to reveal the dependence of trueSE yield (TSEY) on the top and bottom layers' physical properties and estimate TSEY proportions contributed by the top and bottom layers at random energy points. By employing the concept, SEE characteristics of Al2O3/Si, MgO/Si, and TiO2/Si double-layer structureshave been quantitatively interpreted. Moreover, the abnormal SEY curve with a double-hump shape, which is induced by the peak position distinction of SiO2/Si structures, can also be explained. This work is of great significance to comprehend TSEY modulating regularities of various double-layer structures applied in surface engineering.<br/> &copy; 2021 Author(s).
Number of references:31
Main heading:Magnesia
Controlled terms:Coatings - Titanium dioxide - Alumina - Silica - Secondary emission - Thickness measurement - Silicon - Aluminum oxide
Uncontrolled terms:Coating structures - Coating thickness - Double layer structure - Secondary electron emissions - Secondary electrons - Surface coatings - Surface engineering - Vacuum environment
Classification code:549.3  Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 804.2  Inorganic Compounds - 813.2  Coating Materials - 943.2  Mechanical Variables Measurements
DOI:10.1063/5.0023325
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 2>
 
Accession number:20215111372727
Title:Optimization of the epitaxial structure of low-loss 885nm high-power laser diodes
Authors:Wu, Shun-Hua (1, 2); Li, Te (2); Wang, Dan (2); Yu, Xue-Cheng (2); Wang, Zhen-Fu (2); Liu, Guo-Jun (1) 
Author affiliation:(1) State Key Laboratory of High Power Semiconductor Laser, Changchun University of Science and Technology, Jilin, Changchun; 130022, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shannxi, Xi'an; 710119, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11907
Part number:1 of 1
Issue title:Sixteenth National Conference on Laser Technology and Optoelectronics
Issue date:2021
Publication year:2021
Article number:1190714
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510646636
Document type:Conference article (CA)
Conference name:16th National Conference on Laser Technology and Optoelectronics
Conference date:June 3, 2021  -  June 6, 2021
Conference location:Shanghai, China
Conference code:175236
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Aiming at the epitaxial structure of the high-power 885nm laser diodes, the factors limiting the further increase of the output power and the power conversion efficiency were investigated. According to the analysis, the epitaxial structure of the laser diodes was optimized, and the influence of the waveguide layer thickness on the carrier absorption loss and the series resistance was theoretically simulated. The results showed that the asymmetric waveguide structure with the thickness ratio of the N-side and the P-side of 6:4 can reduce the carrier absorption loss to the greatest extent. Based on the simulation results, the 885nm laser bars with the optimized epitaxial structure were fabricated and tested under the ambient temperature of 25 in a quasi-continuous wave mode of 250&mu;s and 200Hz. The slope efficiency reaches 1.26W/A, while the series resistance is only 1.2m&omega;. The power of 277.6W is achieved at 250A injection current and the maximum power conversion efficiency exceeds 64%.<br/></div> &copy; 2021 SPIE.
Number of references:23
Main heading:Diodes
Controlled terms:Waveguides - Conversion efficiency - Epitaxial growth - Electric resistance - High power lasers
Uncontrolled terms:885nm - Absorption loss - Asymmetric waveguides - Carrier absorption - Epitaxial structure - High power - High power conversion - High power conversion efficiency - Low-loss - Power conversion efficiencies
Classification code:525.5  Energy Conversion Issues - 701.1  Electricity: Basic Concepts and Phenomena - 714.3  Waveguides - 744.1  Lasers, General - 802.3  Chemical Operations - 933.1.2  Crystal Growth
Numerical data indexing:Electric current 2.50E+02A, Frequency 2.00E+02Hz, Percentage 6.40E+01%, Power 1.26E+00W, Power 2.776E+02W, Size 6.35E-01m, Size 8.85E-07m, Time 2.50E-04s
DOI:10.1117/12.2602879
Funding details:  Number: 61504167, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2015JQ6263,2018JM6010, Acronym: -, Sponsor: Natural Science Foundation of Shanxi Province;
Funding text:This work was supported by the National Natural Science Foundation of China (Grant No.61504167), the Natural Science Foundation of Shannxi Province, China(Grant Nos.2019ZY-CXPT-03-05, 2018JM6010, 2015JQ6263) and the Talent Project of Science and Technology Department of Shannxi Province (No.2017KJXX-72).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 3>
 
Accession number:20215011329574
Title:Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum    (Open Access)
Authors:Li, Manman (1); Yan, Shaohui (1); Zhang, Yanan (1); Chen, Xu (1); Yao, Baoli (1, 2) 
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) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:Nanoscale Advances
Abbreviated source title:Nanoscale Adv.
Volume:3
Issue:24
Issue date:December 21, 2021
Publication year:2021
Pages:6897-6902
Language:English
E-ISSN:25160230
Document type:Journal article (JA)
Publisher:Royal Society of Chemistry
Abstract:<div data-language="eng" data-ev-field="abstract">Chirality describes a reduced symmetry and abounds in nature. The handedness-dependent response usually occurs only when a chiral object interacts with another chiral entity. Light carrying orbital angular momentum (OAM) is inherently chiral due to the helical wave front. Here, we put forward a scheme that enables optical separation and simultaneous discrimination of single chiral particles using focused vector beams with OAM. Such focused vector vortex beams carrying radial-splitting optical chirality can selectively trap one enantiomer inside or outside the intensity maxima depending on the sign of the OAM. The particles with different chirality parameters can be trapped on different orbits and experience enhanced orbital motion. Moreover, the magnitude of OAM as well as the size of particle plays an important role in the chiral separation and discrimination. In addition to particle manipulation, the discussion of OAM in chiral light-matter interactions has potential application in, for example, optical enantioseparation or chiral detection. This journal is<br/></div> &copy; The Royal Society of Chemistry.
Number of references:45
Main heading:Chirality
Controlled terms:Wavefronts - Separation - Angular momentum
Uncontrolled terms:Chiral discrimination - Chiral particles - Helical wave fronts - Optical chirality - Optical separation - Orbital angular momentum - Orbital motions - Radial splitting - Vector beams - Vector-vortex beams
Classification code:802.3  Chemical Operations - 931.3  Atomic and Molecular Physics
DOI:10.1039/d1na00530h
Funding details:  Number: 11904395,11974417, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: ZDBS-LY-JSC035, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This research is supported by the Natural Science Foundation of China (NSFC) under Grant Nos 11904395 and 11974417, and the Key Research Program of Frontier Sciences, CAS, Grant No. ZDBS-LY-JSC035.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold, Green
 
<RECORD 4>
 
Accession number:20210509874631
Title:Optical system design of polarization imaging spectrometer based on aperture division
Authors:Chang, Lingying (1); Pan, Qian (1); Qiu, Yuehong (2); Zhao, Baochang (2) 
Author affiliation:(1) Xi'an University of Post and Telecommunications, Xian; 710121, China; (2) Xian Institute Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China 
Corresponding author:Chang, Lingying(sophia_chang@126.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117611K
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Based on the principle of acousto-optic tunable filter and aperture division, the new method that can obtain a high spectral full polarization and image information was proposed. It was improved the accuracy of target detection and object recognition by this method. The Optical system of polarization imaging spectrometer based on aperture divisionandacousto-optic tunable filter was designed in this paper, which was used in the 2.16-meter telescope and spectral range is 450-900 nm.First,the working principle of polarization imaging spectrometer based on aperture division was introduced.Then, the design scheme of optical system and the principle of information acquisition were studied.Finally, the design parameters were assigned and theoptical systems were designed.The whole system MTF reach 0.6 in 32lp/mm.The olarization imaging spectrometer based on aperture division can improve the observation capacity.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:12
Main heading:Optical systems
Controlled terms:Object detection - Spectrometers - Optical design - Polarization - Bandpass filters - Object recognition
Uncontrolled terms:Acousto-optic tunable filters - Design parameters - Full polarization - Image information - Imaging spectrometers - Information acquisitions - Polarization imaging - Tunable filters
Classification code:703.2  Electric Filters - 723.2  Data Processing and Image Processing - 741.1  Light/Optics - 741.3  Optical Devices and Systems
Numerical data indexing:Size 2.16e+00m
DOI:10.1117/12.2586810
Funding details:  Number: 61475190, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Project supported by National Natural Science Foundation of China(Grant No.61475190)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 5>
 
Accession number:20204409417426
Title:Analysis of corrected Cerenkov emission during electron radiotherapy by Monte Carlo method
Authors:Li, Yi (1, 2, 4); Liu, Hongjun (1, 3); Huang, Nan (1); Wang, Zhaolu (1); Zhang, Chunmin (2) 
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) School of Physics, Xi'an Jiaotong University, Xi'an; 710049, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (4) University of Chinese Academy of Science, Beijing; 100084, China 
Corresponding authors:Liu, Hongjun(liuhongjun@opt.ac.cn); Zhang, Chunmin(zcm@xjtu.edu.cn)
Source title:Applied Radiation and Isotopes
Abbreviated source title:Appl. Radiat. Isot.
Volume:168
Issue date:February 2021
Publication year:2021
Article number:109481
Language:English
ISSN:09698043
E-ISSN:18729800
CODEN:ARISEF
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:Cerenkov emission during electron radiotherapy had been emerging as a new dose assessment approach for clinical radiotherapy and could be imaged through a standard commercial camera. The purpose of this work aimed to study the accuracy of corrected Cerenkov emission method during electron radiotherapy by Monte Carlo (MC) method. GAMOS MC software was used to model the physics of electron therapy and calculated dose and Cerenkov photon distribution in water phantom. Compared to ionization chamber and diode measurement, MC simulated dose discrepancy was less than 1% in percentage depth dose (PDD) curves and less than. 2% in crossline profile curves, which was acceptable for clinical criterion. Compared to ionization chamber dose measurement, MC simulated Cerenkov discrepancy was less than 2% in crossline profile distribution, which was acceptable for clinical criterion. However, the Cerenkov PDD curves tended to overestimate the dose at the build-up region and underestimate the dose at the remaining attenuation region. After increasing the Cerenkov distribution depth to 2&ndash;3 mm, the discrepancy became well within 1% at the remaining attenuation region, which was acceptable for clinical criterion. Therefore, corrected Cerenkov emission could be used to assess PDD accuracy and crossline profile accuracy during electron radiotherapy.<br/> &copy; 2020 Elsevier Ltd
Number of references:27
Main heading:Radiotherapy
Controlled terms:Electrons - Monte Carlo methods - Electron emission - Ionization chambers
Uncontrolled terms:Cerenkov photons - Clinical radiotherapy - Diode measurements - Dose assessments - Dose measurement - Emission method - Profile accuracies - Profile distributions
Classification code:461.6  Medicine and Pharmacology - 622.3  Radioactive Material Applications - 922.2  Mathematical Statistics
Numerical data indexing:Percentage 1.00e+00%, Percentage 2.00e+00%
DOI:10.1016/j.apradiso.2020.109481
Funding details:  Number: 41530422,QNLM2016ORP0111, Acronym: -, Sponsor: -;Number: 11604377,61775234,61975232, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2012AA121101, Acronym: -, Sponsor: National High-tech Research and Development Program;
Funding text:This work was supported by following financial programs. The National Natural Science Foundation of China ( 61975232 , 61775234 , 11604377 ), Qingdao National Laboratory supported this work for Marine Science and Technology of China ( QNLM2016ORP0111 ), The Key Program of National Natural Science Foundation of China ( 41530422 ), National High Technology Research and Development Program of China (Program 863) ( 2012AA121101 ). We thank Varian Company for providing machine information.This work was supported by following financial programs. The National Natural Science Foundation of China (61975232, 61775234, 11604377), Qingdao National Laboratory supported this work for Marine Science and Technology of China (QNLM2016ORP0111), The Key Program of National Natural Science Foundation of China (41530422), National High Technology Research and Development Program of China (Program 863) (2012AA121101). We thank Varian Company for providing machine information. All authors in this study and many colleagues helped to collect and analyze data. Their support and helps should be appreciated.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 6>
 
Accession number:20204709521265
Title:The mutual influence between rare earth element doping and femtosecond laser-induced effects in Ga-As-Sb-S chalcogenide glass
Authors:Liu, Lutao (1, 2); Chen, Fengyi (3); Cui, Jian (1, 2); Xiao, Xusheng (1); Xu, Yantao (1, 2); Hou, Chaoqi (1, 2); Cui, Xiaoxia (1, 2); Guo, Haitao (1, 2, 4) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; Shaanxi; 710119, China; (2) Centre for Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China; (3) School of Physics, Northwest University, Xi'an; Shaanxi; 710069, China; (4) Collaborative Innovation Centre of Extreme Optics, Shanxi University, Taiyuan; Shanxi; 030006, China 
Corresponding author:Guo, Haitao(guoht_001@opt.ac.cn)
Source title:Ceramics International
Abbreviated source title:Ceram Int
Volume:47
Issue:5
Issue date:March 1, 2021
Publication year:2021
Pages:6388-6396
Language:English
ISSN:02728842
CODEN:CINNDH
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:Femtosecond laser-induced damage thresholds (LIDTs) of Ga<inf>0.8</inf>As<inf>29.2</inf>Sb<inf>10</inf>S<inf>60</inf> glasses doped with gradient Tm<sup>3+</sup> concentrations and the effects of laser-induced damage on the glass' luminescence properties were studied in this work. Tm<sup>3+</sup> doping in the glass considerably decreased the LIDT, from 3394.8 to 1881.8 mJ/cm<sup>2</sup>, when the Tm<sup>3+</sup> concentration increased from 0 to 5000 ppmw. This was related to the absorption of Tm<sup>3+</sup> around the femtosecond laser's wavelength and microstructural changes caused by the Tm<sup>3+</sup> doping. On the other hand, the femtosecond laser changed the glass matrix's elemental distribution and microstructure. Although the laser damaged the glass, the luminescence properties were barely affected. Based on the changes, femtosecond laser damage mechanism of chalcogenide glass doped with rare earth element was firstly proposed.<br/> &copy; 2020
Number of references:51
Main heading:Femtosecond lasers
Controlled terms:Antimony compounds - Gallium compounds - Rare earths - Rare earth elements - Laser damage - Chalcogenides - Glass - Thulium compounds
Uncontrolled terms:Chalcogenide glass - Elemental distribution - Femtoseconds - Glass matrices - Laser induced damage thresholds - Luminescence properties - Microstructural changes - Rare-earth element doping
Classification code:547.2  Rare Earth Metals - 744.1  Lasers, General - 744.8  Laser Beam Interactions - 804.2  Inorganic Compounds - 812.3  Glass
DOI:10.1016/j.ceramint.2020.10.219
Funding details:  Number: 2019JQ-236,2019JM-113, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;Number: JCTD-2018-19, Acronym: -, Sponsor: -;Number: IOSKL2020KF11, Acronym: SKLIOE, Sponsor: State Key Laboratory on Integrated Optoelectronics;Number: 61935006,62005312, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This study was financially supported by the National Natural Science Foundation of China (No. 61935006 , 62005312 ), CAS Interdisciplinary Innovation Team Project ( JCTD-2018-19 ), and the Natural Science Basic Research Project in Shaanxi Province ( 2019JM-113 , 2019JQ-236 ), Open Fund of the State Key Laboratory of Integrated Optoelectronics ( IOSKL2020KF11 ). The authors thank Mr. Junjiang Guo for assistance with the experiments.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 7>
 
Accession number:20212010355746
Title:Application and Research of NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> Upconverting Luminescent Micro-Nano Particles in Anti-Counterfeiting Identification
Title of translation:NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup>&#19978;&#36716;&#25442;&#21457;&#20809;&#24494;&#32435;&#31890;&#23376;&#22312;&#38450;&#20266;&#35782;&#21035;&#20013;&#30340;&#24212;&#29992;&#30740;&#31350;
Authors:Wang, Chong (1); Mo, Jian-Ye (1, 2); Li, Dong-Dong (1); She, Jiang-Bo (2); Liu, Zhen (2) 
Author affiliation:(1) School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an; 710121, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Source title:Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Abbreviated source title:Guang Pu Xue Yu Guang Pu Fen Xi
Volume:41
Issue:5
Issue date:May 2021
Publication year:2021
Pages:1525-1529
Language:Chinese
ISSN:10000593
CODEN:GYGFED
Document type:Journal article (JA)
Publisher:Science Press
Abstract:<div data-language="eng" data-ev-field="abstract">Rare earth doped upconversion luminescent micro-nano particles have great application prospects in anti-counterfeit identification. First of all, in the article NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles prepared by hydrothermal synthesis method, The size, morphology and crystallinity of NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope, and the luminescence properties of NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles were analyzed using a 980 nm pump source; Secondly, NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles and alcohol were mixed in a certain proportion to make a screen printing agent and combined with a network-customized screen template, different anti-counterfeit patterns were printed on the paper. After air drying, the words were exposed to a 980 nm laser and camera were used to study it. Finally, the printed words were divided into two parts, one was stored indoors at a constant temperature of 25&#8451;, and the other was stored in the outdoor natural environment in January in winter. The storage locations are all Xi'an. After one week, in different environments the words were again tested with the same experimental instruments for imaging. The experiment and test results show that the diffraction peak of NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles is a completely consistent standard card of NaYF<inf>4</inf>, and no other impurities are generated. In this experiment, The synthesized micro-nano particles are all hexagonal in shape, and the average length and cross-sectional width are 209 and 175 nm respectively. The surface of the nanocrystal is smooth, defect-free, unbent, with high crystallinity and good dispersion. The electron diffraction ring corresponds to the 312, 300, and 302 crystal planes of NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles. NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles are affected by doped ions, it produces four visible lights of blue, green, yellow and red by different energy level transitions. Through fluorescence spectrum analysis of NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles. The asymmetry ratio of Eu<sup>3+</sup> ion is about 1. This result shows that the magnetic dipole transition is equivalent to the electric dipole transition. Screen printing agent of NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles are good in different environments, the results are clear and easy to identify. However, affected by the storage environment, The results of indoor imaging have not changed much from the original imaging results. All characters of outdoor imaging are affected by moisture in the natural environment, the brightness is slightly reduced, but they can still be recognized. The imaging results show that the prepared NaYF<inf>4</inf>:Yb<sup>3+</sup>/Eu<sup>3+</sup> micro-nano particles have the characteristics of stability and reliability in anti-counterfeiting identification, but they are still affected by natural environmental factors with a controllable degree. On the whole, it has great application prospects in anti-counterfeiting identification.<br/></div> &copy; 2021, Peking University Press. All right reserved.
Number of references:16
Main heading:Hydrothermal synthesis
Controlled terms:Crime - Luminescence - Morphology - Scanning electron microscopy - Rare earths - Light - Screen printing - Crystallinity - Crystal impurities - Nanoparticles  - Transmission electron microscopy
Uncontrolled terms:Cross sectional width - Electric dipole transition - Energy level transitions - Fluorescence spectrum analysis - Luminescence properties - Magnetic dipole transition - Natural environmental factors - Stability and reliabilities
Classification code:741.1  Light/Optics - 745.1  Printing - 761  Nanotechnology - 802.2  Chemical Reactions - 804.2  Inorganic Compounds - 931.2  Physical Properties of Gases, Liquids and Solids - 933  Solid State Physics - 933.1  Crystalline Solids - 933.1.1  Crystal Lattice - 951  Materials Science - 971  Social Sciences
Numerical data indexing:Size 1.75e-07m, Size 2.09e-07m, Size 9.80e-07m
DOI:10.3964/j.issn.1000-0593(2021)05-1525-05
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 8>
 
Accession number:20213610874252
Title:Terahertz photoconductive antenna based on antireflection dielectric metasurfaces with embedded plasmonic nanodisks
Authors:Jiang, Xiao-Qiang (1, 2); Fan, Wen-Hui (1, 2, 3); Song, Chao (1); Chen, Xu (1); Wu, Qi (1, 2) 
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) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Fan, Wen-Hui(fanwh@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:60
Issue:26
Issue date:September 10, 2021
Publication year:2021
Pages:7921-7928
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:Optica Publishing Group (formerly OSA)
Abstract:<div data-language="eng" data-ev-field="abstract">By taking advantage of dielectric metasurfaces and plasmonic nanostructures, a terahertz photoconductive antenna (THz-PCA) is proposed and investigated in detail. The designed dielectric metasurfaces can reduce the optical reflection down to 1.4% and accelerate the switching process (electric conductive to resistive) that broadens the THz spectrum emitted from THz-PCA. Simultaneously, the embedded plasmonic nanostructures can realize 11.2 times enhancement in local electric field without affecting the switching process and the damage threshold of the THz-PCA. Simulated results indicate that the proposed THz-PCA is 70.56 times stronger in THz radiation power than that of the traditional THz-PCA. The significant enhancement ensures the proposed THz-PCA has great prospects in promoting THz technology based on the THz-PCA.<br/></div> &copy; 2021 Optical Society of America
Number of references:41
Main heading:Nanostructures
Controlled terms:Antennas - Photoconductivity - Plasmonics - Terahertz waves - Electric fields
Uncontrolled terms:Anti-reflection - Damage threshold - Local electric field - Optical reflection - Photoconductive antennas - Plasmonic nanostructures - Simulated results - Switching process
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 711  Electromagnetic Waves - 741.1  Light/Optics - 761  Nanotechnology - 932.3  Plasma Physics - 933  Solid State Physics
Numerical data indexing:Percentage 1.40e+00%
DOI:10.1364/AO.431678
Funding details:  Number: 61675230,61905276, Acronym: NNSFC, Sponsor: National Natural Science Foundation of China;Number: 2020JQ-437, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;
Funding text:Funding. National Natural Science Foundation of China (61675230, 61905276); Natural Science Foundation of Shaanxi Province (2020JQ-437).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.ErratuFlg:2018660982
 
 
<RECORD 9>
 
Accession number:20214111016451
Title:Ultrahigh-Q terahertz sensor based on simple all-dielectric metasurface with toroidal dipole resonance
Authors:Jiang, Xiao-Qiang (1, 2); Fan, Wen-Hui (1, 2, 3); Chen, Xu (1); Yan, Hui (1, 2) 
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) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Fan, Wen-Hui(fanwh@opt.ac.cn)
Source title:Applied Physics Express
Abbreviated source title:Appl. Phys. Express
Volume:14
Issue:10
Issue date:October 2021
Publication year:2021
Article number:102008
Language:English
ISSN:18820778
E-ISSN:18820786
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">A simple all-dielectric metasurface with symmetric structure, exhibiting strong toroidal dipole (TD) resonance and ultrahigh quality factor (Q-factor), is proposed. The physical mechanisms of the TD resonance are investigated by calculating the electromagnetic field and the scattering power of multipoles. Simulated results demonstrate that the Q-factor is up to 3.71 &times; 104 and the corresponding figure of merit is 636.7. Moreover, the TD resonance can be excited under both x- and y-polarized incident terahertz waves due to the symmetric structure. The remarkable performances make the proposed metasurface has feasible capability for biological and chemical sensing in terahertz range.<br/></div> &copy; 2021 The Japan Society of Applied Physics.
Number of references:31
Main heading:Terahertz waves
Controlled terms:Chemical sensors - Q factor measurement - Electromagnetic fields - Resonance
Uncontrolled terms:Dipole resonances - Metasurface - Multipoles - Physical mechanism - Power - Quality factors - Simple++ - Simulated results - Symmetric structures - Terahertz sensors
Classification code:701  Electricity and Magnetism - 711  Electromagnetic Waves - 801  Chemistry - 931.1  Mechanics - 942.2  Electric Variables Measurements
DOI:10.35848/1882-0786/ac27b7
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 10>
 
Accession number:20212210422607
Title:Magneto-optically reorientation-induced image reconstruction in bulk nematic liquid crystals    (Open Access)
Authors:ZHANG, YONGBIN (1, 2); WANG, ZHAOLU (1); HUANG, NAN (1); LIU, HONGJUN (1, 3) 
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) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (3) University of Chinese Academy of Sciences, Beijing; 100084, China 
Corresponding author:LIU, HONGJUN(liuhongjun@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:29
Issue:11
Issue date:May 24, 2021
Publication year:2021
Pages:17581-17590
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">We theoretically propose the magneto-optically reorientation-induced image reconstruction in bulk nematic liquid crystals (NLCs). The underlying signals are reinforced and recovered at the expense of scattering noise under reorientation-induced self-focusing nonlinearity. The intensity perturbation gain is derived and the numerical results are presented to show the response of NLC molecules to the diffusive images. The nonlinear image recovery is influenced by the input light intensity, the magnetic field direction, and the correlation length. The results suggest an alternative approach to detect noisy images and promote the application of NLCs in image processing.<br/></div> &copy; 2021 Optical Society of America.
Number of references:34
Main heading:Nematic liquid crystals
Controlled terms:Image reconstruction - Magnetos
Uncontrolled terms:Bulk nematic - Correlation lengths - Image recovery - Input light - Magnetic field direction - Numerical results - Scattering noise - Self-focusing
Classification code:705.2  Electric Generators - 708.4  Magnetic Materials
DOI:10.1364/OE.425642
Funding details:  Number: 61775234,61975232, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (61775234, 61975232).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 11>
 
Accession number:20212410479921
Title:Enhanced optical absorption surface of titanium fabricated by a femtosecond laser assisted with airflow pressure    (Open Access)
Authors:Li, Xun (1, 3); Li, Ming (1); Liu, Hongjun (1, 2) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (2) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding authors:Li, Ming(liming@opt.ac.cn); Liu, Hongjun(liuhongjun@opt.ac.cn)
Source title:Chinese Optics Letters
Abbreviated source title:Chin. Opt. Lett.
Volume:19
Issue:9
Issue date:September 2021
Publication year:2021
Article number:091404
Language:English
ISSN:16717694
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">We propose an effective way to achieve an enhanced optical absorption surface of titanium alloy 7 (Ti7) fabricated by a femtosecond (fs) laser assisted with airflow pressure. The effect of laser scanning speed and laser power on the surfaces' morphology and average reflectivity was studied. In order to further reduce the surface's reflectivity, different airflow pressure was introduced during the fabrication of Ti7 by a fs laser. Furthermore, the average reflectivity of samples fabricated under different laser parameters assisted with airflow was presented. In addition, the high and low temperature tests of all samples were performed to test the stability performance of the hybrid micro/nanostructures in extreme environments. It is demonstrated that the airflow pressure has an important influence on the micro/nanostructures for light trapping, the average reflectivity of which could be as low as 2.31% over a broad band of 250-2300 nm before high and low temperature tests, and the reflection for specific wavelengths can go below 1.5%.<br/></div> &copy; 2021 OSA - The Optical Society. All rights reserved.
Number of references:45
Main heading:Reflection
Controlled terms:Surface morphology - Fabrication - Morphology - Titanium alloys - Light absorption - Temperature - Femtosecond lasers
Uncontrolled terms:Broad bands - Extreme environment - Femtosecond (fs) laser - Laser parameters - Laser scanning speed - Light-trapping - Micro/nanostructures - Stability performance
Classification code:542.3  Titanium and Alloys - 641.1  Thermodynamics - 741.1  Light/Optics - 744.1  Lasers, General - 931.2  Physical Properties of Gases, Liquids and Solids - 951  Materials Science
Numerical data indexing:Percentage 1.50e+00%, Percentage 2.31e+00%, Size 2.50e-07m to 2.30e-06m
DOI:10.3788/COL202119.091404
Funding details:  Number: 2018YFB1107704, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;Number: S2019-YF-ZDCXL-ZDLGY-0253,S2020-YF-ZDCXL-ZDLGY-0021, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;Number: S2019-ZDZX-ZNZC-3.1-0001, Acronym: -, Sponsor: Key Science and Technology Program of Shaanxi Province;
Funding text:This work was supported by the National Key R&D Program of China (No. 2018YFB1107704), the Key Research and Development Program of Shaanxi Province (Nos. S2019-YF-ZDCXL-ZDLGY-0253 and S2020-YF-ZDCXL-ZDLGY-0021), and the Major Science and Technology Projects in Shaanxi Province (No. S2019-ZDZX-ZNZC-3.1-0001).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Bronze
 
<RECORD 12>
 
Accession number:20212310450853
Title:Accuracy-enhanced coherent Ising machine using the quantum adiabatic theorem    (Open Access)
Authors:Li, Lin (1, 2); Liu, Hongjun (1, 3); Huang, Nan (1); Wang, Zhaolu (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; 100084, China; (3) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Liu, Hongjun(liuhongjun@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:29
Issue:12
Issue date:June 7, 2021
Publication year:2021
Pages:18530-18539
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">The coherent Ising machine (CIM) implemented by degenerate optical parametric oscillator (DOPO) networks is a novel optical platform to accelerate computation of hard combinatorial optimization problems. Nevertheless, with the increase of the problem size, the probability of the machine being trapped by local minima increases exponentially. According to the quantum adiabatic theorem, a physical system will remain in its instantaneous ground state if the time-dependent Hamiltonian varies slowly enough. Here, we propose a method to help the machine partially avoid getting stuck in local minima by introducing quantum adiabatic evolution to the ground-state-search process of the CIM, which we call A-CIM. Numerical simulation results demonstrate that A-CIM can obtain improved solution accuracy in solving MAXCUT problems of vertices ranging from 10 to 2000 than CIM. The proposed machine that is based on quantum adiabatic theorem is expected to solve optimization problems more correctly.<br/></div> &copy; 2021 Optical Society of America.
Number of references:49
Main heading:Ground state
Controlled terms:Optical parametric oscillators - Quantum theory - Computation theory - Hamiltonians - Combinatorial optimization
Uncontrolled terms:Adiabatic evolution - Combinatorial optimization problems - Degenerate optical parametric oscillators - Optical platforms - Optimization problems - Quantum adiabatic theorem - Solution accuracy - Time-dependent Hamiltonians
Classification code:721.1  Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory - 921.5  Optimization Techniques - 931.4  Quantum Theory; Quantum Mechanics
DOI:10.1364/OE.426476
Funding details:  Number: 61775234,61975232, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (61775234, 61975232).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 13>
 
Accession number:20213110707030
Title:A Comprehensive Review on Parallel Phase-shifting Digital Holography(Invited)
Title of translation:&#21516;&#27493;&#30456;&#31227;&#25968;&#23383;&#20840;&#24687;&#32508;&#36848;(&#29305;&#36992;)
Authors:Zhang, Meiling (1); Gao, Peng (1); Wen, Kai (1); Zhuo, Kequn (1); Wang, Yang (1); Liu, Lixin (1); Min, Junwei (2); Yao, Baoli (2) 
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Yao, Baoli(yaobl@opt.ac.c.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:7
Issue date:July 25, 2021
Publication year:2021
Article number:0709001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Phase-shifting Digital Holography(PSDH), which combines phase-shifting technology with digital holography, provides a fast, non-invasive, and high-precision approach for the three-dimensional morphology or refractive index distribution of microscopic objects. Compared with the off-axis digital holography, the phase-shifting on-axis digital holography makes full utilization of Spatial-bandwidth Product (SBP) of the CCD camera. The conventional phase-shifting digital holography needs to records multiple phase-shifting holograms in a step-by-step manner, from which the artifact-free phase and amplitude images of a sample can be reconstructed. To enhance the imaging speed of PSDH, parallel phase-shifting technique (or simultaneous phase-shifting technique) was proposed, with which multiple phase-shifting holograms can be obtained at the same time. In this paper, the concept and implementation of phase-shifting technologies are introduced firstly. Then, three different approaches of parallel phase-shifting, which are based on multiple CCDs, pixelated phase-mask, and parallel beam-splitting, are reviewed. Eventually, the applications of parallel PSDH in the biomedical field, air/liquid flow visualization, surface topography, micro-/nano-scale device inspection are introduced.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:122
Main heading:Holograms
Controlled terms:Lithography - Topography - Refractive index - CCD cameras
Uncontrolled terms:Digital holography - Microscopic objects - Off-axis digital holographies - Phase-shifting digital holography - Phase-shifting technique - Phase-shifting technology - Refractive-index distribution - Three dimensional morphology
Classification code:714.2  Semiconductor Devices and Integrated Circuits - 741.1  Light/Optics - 742.2  Photographic Equipment - 743  Holography - 951  Materials Science
DOI:10.3788/gzxb20215007.0709001
Funding details:  Number: 61975233,62075177, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2020JQ-324, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: -, Acronym: SKLTOP, Sponsor: State Key Laboratory of Transient Optics and Photonics;Number: -, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:Foundation item&#65306;National Natural Science Foundation of China&#65288;Nos. 62075177&#65292;61975233&#65289;&#65292;Natural Science Foundation of Shaanxi Province&#65288;Nos.2020JM-193&#65292;2020JQ-324&#65289;&#65292;Fundamental Research Funds for the Central Universities&#65288;No.JB210513&#65289;&#65292;State Key Laboratory of Transient Optics and Photonics&#65288;No.SKLST201804&#65289;&#65292;State Key Laboratory of Jiangxi Province for Image Processing and Pattern Recognition&#65288;No.ET202080417&#65289;
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 14>
 
Accession number:20211610236249
Title:Research progress of 0.9 ~ 1.0 &mu;m near-infrared continuous-wave fiber lasers
Title of translation:0.9~1.0 &mu;m&#36817;&#32418;&#22806;&#36830;&#32493;&#20809;&#32420;&#28608;&#20809;&#22120;&#30340;&#30740;&#31350;&#36827;&#23637;
Authors:Dang, Wen-Jia (1); Li, Zhe (2, 3); Lu, Na (1); Li, Yu-Ting (1); Zhang, Lei (1); Tian, Xiao (1) 
Author affiliation:(1) School of Science, Xi'an Aeronautical University, Xi'an; 710077, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Dang, Wen-Jia(wenjia_dang@126.com)
Source title:Chinese Optics
Abbreviated source title:Chin. Opt.
Volume:14
Issue:2
Issue date:March 2021
Publication year:2021
Pages:264-274
Language:Chinese
ISSN:20971842
Document type:Journal article (JA)
Publisher:Editorial Office of Chinese Optics
Abstract:<div data-language="eng" data-ev-field="abstract">Near-infrared continuous-wave fiber lasers with wavelengths of 0.9~1.0 &mu;m have important application prospects in the fields of high-power blue and ultraviolet laser generation, high-power single-mode pump sources, biomedicine and lidars. They have thus become a heavily researched topic in recent years. At present, their gain mechanisms mainly include a rare earth ion gain or a nonlinear effect gain. In this paper, the research progress of 0.9~1.0 &mu;m fiber lasers based on these two kinds of gain mechanisms are reviewed in detail, and the technical bottlenecks and solutions of these lasers are analyzed. Furthermore, the potential directions for the future of their research are proposed.<br/></div> Copyright &copy;2021 Chinese Optics. All rights reserved.
Number of references:64
Main heading:Fiber lasers
Controlled terms:Continuous wave lasers - Infrared devices - Infrared lasers - Metal ions - Pumping (laser) - Rare earths - Ultraviolet lasers
Uncontrolled terms:Continuous Wave - High power - Near Infrared - Near-infrared - Near-infrared laser with a wavelength of 0.9~1.0 &mu;m - Near-infrared lasers - Nonlinear effect - Nonlinear effect gain - Rare earth ion gain - Rare earth ions
Classification code:531.1  Metallurgy - 744.1  Lasers, General - 744.4  Solid State Lasers - 804.2  Inorganic Compounds
Numerical data indexing:Size 9.00E-07m to 1.00E-06m
DOI:10.37188/CO.2020-0193
Funding details:  Number: 2019KRM093, Acronym: -, Sponsor: -;Number: 2018ZDXM-GY-051, Acronym: -, Sponsor: -;Number: 17JK0394,19JK0429, Acronym: -, Sponsor: Education Department of Shaanxi Province;Number: 2019JQ-914, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:&#22522;&#37329;&#39033;&#30446;&#65306;&#38485; &#35199; &#30465; &#33258; &#28982; &#31185; &#23398; &#22522; &#30784; &#30740; &#31350; &#35745; &#21010; &#36164; &#21161; &#39033; &#30446; &#65288; No. 2019JQ-914&#65289; &#65307; &#38485; &#35199; &#30465; &#21019; &#26032; &#33021; &#21147; &#25903; &#25745; &#35745; &#21010; &#39033; &#30446; &#65288;No. 2019KRM093&#65289;&#65307;&#38485;&#35199;&#30465;&#25945;&#32946;&#21381;&#19987;&#39033;&#31185;&#30740;&#35745;&#21010;&#39033;&#30446;&#65288;No. 17JK0394&#65292;No. 19JK0429&#65289;&#65307;&#38485;&#35199;&#30465;&#31185;&#25216;&#21381;&#37325;&#28857;&#30740;&#21457; &#35745;&#21010;&#39033;&#30446;&#65288;No. 2018ZDXM-GY-051&#65289; Supported by the Natural Science Basic Research Program of Shaanxi (No. 2019JQ-914); Innovation Capabil-ity Support Program of Shaanxi (No. 2019KRM093); Scientific Research Program Funded by Shaanxi Provin-cial Education Department (No. 17JK0394, No. 19JK0429); Key Research and Development Program Fund of Shaanxi Science and Technology Department (No. 2018ZDXM-GY-051)Supported by the Natural Science Basic Research Program of Shaanxi (No. 2019JQ-914); Innovation Capability Support Program of Shaanxi (No. 2019KRM093); Scientific Research Program Funded by Shaanxi Provincial Education Department (No. 17JK0394, No. 19JK0429); Key Research and Development Program Fund of Shaanxi Science and Technology Department (No. 2018ZDXM-GY-051)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 15>
 
Accession number:20220111429924
Title:Dual-wavelength in-line digital holography with untrained deep neural networks
Authors:Bai, Chen (1); Peng, Tong (1, 2); Min, Junwei (1); Li, Runze (1); Zhou, Yuan (1); Yao, Baoli (1, 3) 
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) Xi'an Jiaotong University, Xi'an; 710049, China; (3) Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao; 266200, China 
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:Photonics Research
Abbreviated source title:Photon. Res.
Volume:9
Issue:12
Issue date:December 1, 2021
Publication year:2021
Pages:2501-2510
Language:English
ISSN:23279125
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Dual-wavelength in-line digital holography (DIDH) is one of the popular methods for quantitative phase imaging of objects with non-contact and high-accuracy features. Two technical challenges in the reconstruction of these objects include suppressing the amplified noise and the twin-image that respectively originate from the phase difference and the phase-conjugated wavefronts. In contrast to the conventional methods, the deep learning network has become a powerful tool for estimating phase information in DIDH with the assistance of noise suppressing or twin-image removing ability. However, most of the current deep learning-based methods rely on supervised learning and training instances, thereby resulting in weakness when it comes to applying this training to practical imaging settings. In this paper, a new DIDH network (DIDH-Net) is proposed, which encapsulates the prior image information and the physical imaging process in an untrained deep neural network. The DIDHNet can effectively suppress the amplified noise and the twin-image of the DIDH simultaneously by automatically adjusting the weights of the network. The obtained results demonstrate that the proposed method with robust phase reconstruction is well suited to improve the imaging performance of DIDH.<br/></div> &copy; 2021 Chinese Laser Press.
Number of references:40
Main heading:Deep neural networks
Controlled terms:Holography - Learning systems
Uncontrolled terms:Conventional methods - Dual-wavelength - High-accuracy - In-line digital holography - Learning network - Non-contact - Phase difference - Quantitative phase imaging - Technical challenges - Twin-image
Classification code:461.4  Ergonomics and Human Factors Engineering - 743  Holography - 746  Imaging Techniques
DOI:10.1364/PRJ.441054
Funding details:  Number: 61905277,61975233, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2021401, Acronym: YIPA CAS, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;Number: 2020GY-008, Acronym: -, Sponsor: Key Research and Development Projects of Shaanxi Province;
Funding text:Funding. National Natural Science Foundation of China (61905277, 61975233); Key Research and Development Projects of Shaanxi Province (2020GY-008); Youth Innovation Promotion Association of the Chinese Academy of Sciences (2021401).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 16>
 
Accession number:20214411106031
Title:Research progress of tunable fiber light sources with wavelength near 1 &mu;m
Title of translation:&#36817;1 &mu;m&#27874;&#27573;&#21487;&#35843;&#35856;&#20809;&#32420;&#20809;&#28304;&#30340;&#30740;&#31350;&#36827;&#23637;
Authors:Dang, Wen-Jia (1); Gao, Qi (2, 3); Li, Zhe (2, 3); Li, Gang (2, 3) 
Author affiliation:(1) School of Science, Xi'an Aeronautical University, Xi'an; 710077, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding authors:Li, Zhe(lizhe@opt.ac.cn); Li, Zhe(lizhe@opt.ac.cn); Li, Gang(ligang85@opt.ac.cn); Li, Gang(ligang85@opt.ac.cn)
Source title:Chinese Optics
Abbreviated source title:Chin. Opt.
Volume:14
Issue:5
Issue date:September 2021
Publication year:2021
Pages:1120-1132
Language:Chinese
ISSN:20971842
Document type:Journal article (JA)
Publisher:Editorial Office of Chinese Optics
Abstract:<div data-language="eng" data-ev-field="abstract">Tunable fiber light sources with wavelength near 1 &mu;m are widely used in optical fiber sensing, laser cooling, photochemical, spectroscopy and medical fields. They have thus become an area of focus in fiber light source research in recent years. The development history of fiber light sources with wavelength tuning ability is firstly summarized systematically. Then, their problems and possible solutions are analyzed. Finally, the future developments of tunable fiber light sources near 1 &mu;m are prospected.<br/></div> &copy; 2021, China Science Publishing & Media LTD. All right reserved.
Number of references:57
Main heading:Fiber lasers
Controlled terms:Laser cooling - Optical fibers
Uncontrolled terms:Cooling fields - Fiber light source - Optical fiber sensing - Raman fiber lasers - Random fiber laser - Random fibers - Sensing lasers - Superfluorescent fiber sources - Tunable wavelength - Tunables
Classification code:741.1.2  Fiber Optics - 744.4  Solid State Lasers - 744.9  Laser Applications - 931.3  Atomic and Molecular Physics
Numerical data indexing:Size 1.00E-06m
DOI:10.37188/CO.2021-0125
Funding details:  Number: 2017YFB1104400, Acronym: -, Sponsor: -;
Funding text:&#25910;&#31295;&#26085;&#26399;&#65306;2021-06-10&#65307;&#20462;&#35746;&#26085;&#26399;&#65306;2021-07-13 &#22522;&#37329;&#39033;&#30446;&#65306;&#22269;&#23478;&#37325;&#28857;&#30740;&#21457;&#35745;&#21010;&#39033;&#30446;&#65288;No. 2017YFB1104400&#65289; Supported by National Key R& D Program of China (No. 2017YFB1104400).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 17>
 
Accession number:20211910310695
Title:Molybdenum Carbide Buried in D-Shaped Fibers as a Novel Saturable Absorber Device for Ultrafast Photonics Applications
Authors:Liu, Sicong (1); Shang, Shiguang (2); Lv, Ruidong (3); Wang, Yonggang (1, 4); Wang, Jiang (1); Ren, Wei (2); Wang, Yishan (4) 
Author affiliation:(1) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (2) School of Science, Xi'An Institute of Posts and Telecommunications, Xi'an; 710121, China; (3) School of Electronic Science and Engineering, Xi'An Jiaotong University, Xi'an; 710049, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Wang, Yonggang(chinawygxjw@snnu.edu.cn)
Source title:ACS Applied Materials and Interfaces
Abbreviated source title:ACS Appl. Mater. Interfaces
Volume:13
Issue:16
Issue date:April 28, 2021
Publication year:2021
Pages:19128-19137
Language:English
ISSN:19448244
E-ISSN:19448252
Document type:Journal article (JA)
Publisher:American Chemical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Study of nonlinear laser-matter interactions in 2D materials has promoted development of photonics applications. As a typical MXene material, molybdenum carbide (Mo2C) has attracted much attention because of its graphene-like structure. Here, a type of D-shaped fiber (DF)-buried Mo2C saturable absorber (SA) fabricated by magnetron-sputtering deposition (MSD) and sol-gel technique is reported. The Mo2C material was buried between the bottom DF and the upper amorphous silica fabricated by sol-gel technology. Therefore, the DF-based SA effectively solves the problem of material shedding and aging, thus improving the stability and damage threshold of the fiber laser. Application of the SA in erbium-doped fiber laser and stable passive Q-switched operation with a maximum pulse energy of 430.47 nJ is realized. By adjusting the polarization state and pump power, high-power mode-locked pulses are generated with a pulse duration and output power of 199 fs and 54.13 mW, respectively. Further, bound-state soliton pulses are obtained with a pulse width of 312 fs and soliton interval of 1.26 ps for the first time based on MXene materials. Moreover, by application of the SA in ytterbium-doped fiber lasers, a stable dissipative soliton mode-locked pulse is obtained with a pulse width of 23 ps. These results indicate that the DF-based buried Mo2C as a novel SA provides a reliable method for all-fiber and multifunctional high-power ultrafast laser.<br/></div> &copy; 2021 American Chemical Society.
Number of references:45
Main heading:Fiber lasers
Controlled terms:Saturable absorbers - Silica - Sol-gel process - Molybdenum compounds - Optical pumping - Sol-gels - Ultrafast lasers - Fibers - Carbides
Uncontrolled terms:Dissipative solitons - Erbium doped fiber laser - Magnetron-sputtering deposition - Photonics applications - Polarization state - Sol-gel technology - Ultra-fast photonics - Ytterbium-doped fiber lasers
Classification code:744.1  Lasers, General - 744.4  Solid State Lasers - 804  Chemical Products Generally - 804.2  Inorganic Compounds - 812.1  Ceramics - 812.3  Glass
Numerical data indexing:Energy 4.30e-07J, Power 5.41e-02W, Time 1.26e-12s, Time 1.99e-13s, Time 2.30e-11s, Time 3.12e-13s
DOI:10.1021/acsami.1c01345
Funding details:  Number: GK201702005, Acronym: -, Sponsor: -;Number: 61690222, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2019TS117, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:This work is supported by the Central University Special Fund Basic Research and Operating Expense (GK201702005), Fundamental Research Funds for the Central Universities (2019TS117), and National Natural Science Foundation of China (61690222).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 18>
 
Accession number:20210509874615
Title:GaAs material photorefractive response time measurement based on spectral probe
Authors:Yang, Qing (1); Yin, Fei (1, 2); Wang, Tao (2); Gao, Guilong (2); He, Kai (2); Yan, Xin (2) 
Author affiliation:(1) School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi; 710049, China; (2) Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xian Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xian, Shaanxi; 710119, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117610U
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:The ultrafast all-optical solid-state framing camera(UASFC) technique is a new diagnostic method based on the semiconductor photorefractive effect. The ultra-fast response characteristics of this method are mainly determined by the response time of the semiconductor material's photorefractive index change. How to quickly and accurately measure the photorefractive index response time of semiconductor materials is an important step in the development of all-optical solid ultra-fast diagnostic chip. In this paper, the 100fs pulsed laser is divided into two beams. One of which is used as excitation light to generate pulsed X-ray source; the other beam is measured as a spectral probe light. Through the test of GaAs material, the response time of the refractive index change of GaAs material was less than 5ps, which laid a foundation for further optimization experiment and accurate measurement.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:13
Main heading:Gallium arsenide
Controlled terms:III-V semiconductors - Semiconductor lasers - Photoreactivity - Refractive index - Semiconducting gallium - Probes
Uncontrolled terms:Accurate measurement - Diagnostic methods - Excitation light - Photorefractive effects - Photorefractive index - Photorefractive response - Pulsed x-ray sources - Refractive index changes
Classification code:712.1  Semiconducting Materials - 712.1.1  Single Element Semiconducting Materials - 741.1  Light/Optics - 744.4.1  Semiconductor Lasers - 804  Chemical Products Generally
Numerical data indexing:Time 1.00e-13s, Time 5.00e-12s
DOI:10.1117/12.2586950
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 19>
 
Accession number:20212510525586
Title:Advances in G-stack diode laser using macro-channel water cooling and high thermal conductivity material packaging
Authors:Han, Yang (1); Sun, Lichen (1); Fu, Tuanwei (1); Gao, Lijun (1); Zheng, Yanfang (1); Chen, Yunzhu (1); Zhang, Xiaojuan (1); Yan, Minna (1); Zhao, Sicheng (1); Yang, Kai (1); Gao, Lei (1); Zah, Chungen (1); Liu, Xingsheng (1, 2) 
Author affiliation:(1) Focuslight Technologies Inc., 56 Zhangba 6th Road, Xi'an High-Tech Zone, Xi'an, Shaanxi; 710077, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an Hi-Tech Industrial Development Zone, No. 17 Xinxi Road, New Industrial Park, Xi'an, Shaanxi; 710119, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11668
Part number:1 of 1
Issue title:High-Power Diode Laser Technology XIX
Issue date:2021
Publication year:2021
Article number:116680W
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510641716
Document type:Conference article (CA)
Conference name:High-Power Diode Laser Technology XIX 2021
Conference date:March 6, 2021  -  March 11, 2021
Conference location:Virtual, Online, United states
Conference code:169165
Sponsor:The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">There are strong demands at the market to increase power and reliability for high power diode laser. In parallel to this the requirements for cooler and package for the high power diode laser increase. Superior heat dissipation capability and low thermal resistance are some of the key attributes for the diode laser package design in the near future. The most common method of removing the large amounts of waste heat in a diode laser is using a micro-channel cooler. However, a microchannel cooler requires water to meet demanding specifications to avoid failures due to corrosion, which increases the overall cost to operate and maintain the laser. We demonstrate advances in a new macro-channel water cooling diode laser which are designed to eliminate the failure mechanisms associated with micro-channel coolers, and enhance the laser heat dissipation and the long-term reliability. For the package adopting the high thermal conductivity material, the maximum output power is 100 W per bar in CW mode. Due to the advantage of compact design, high power, high reliability and fast axis collimation, the new diode laser has the potential to be widely used in many fields, such as pumping solid state laser, hair removal, industry and research. &copy; 2021 SPIE.<br/></div> &copy; 2021 SPIE. All rights reserved.
Number of references:8
Main heading:Semiconductor lasers
Controlled terms:Cooling water - Corrosion - Thermoelectric equipment - Waste heat - Failure (mechanical) - Heat resistance - Pumping (laser) - Reliability - Cooling systems - Solid state lasers  - Laser beam welding - Power semiconductor diodes
Uncontrolled terms:Failure mechanism - Fast axis collimations - Heat dissipation capability - High power diode laser - High thermal conductivity - Material packaging - Maximum output power - Microchannel coolers
Classification code:525.4  Energy Losses (industrial and residential) - 538.2.1  Welding Processes - 615.4  Thermoelectric Energy - 714.2  Semiconductor Devices and Integrated Circuits - 744.1  Lasers, General - 744.4  Solid State Lasers - 744.4.1  Semiconductor Lasers - 744.9  Laser Applications
Numerical data indexing:Power 1.00e+02W
DOI:10.1117/12.2582695
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 20>
 
Accession number:20210609900370
Title:Research on the X-ray wavelength division multiplexing technology for blackout region communication    (Open Access)
Authors:LI, YAO (1); SU, TONG (2); SHENG, LIZHI (2); XU, NENG (2); ZHAO, BAOSHENG (2) 
Author affiliation:(1) Shaanxi Province Key Laboratory of Thin Films Technology and Optical Test, College of Optoelectronic Engineering, Xi'an Technological University, Xi'an; 710021, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China 
Corresponding author:LI, YAO(liyao_xatu@163.com)
Source title:Optica Applicata
Abbreviated source title:Opt Appl
Volume:50
Issue:4
Issue date:2021
Publication year:2021
Pages:619-632
Language:English
ISSN:00785466
E-ISSN:18997015
CODEN:OPAPBZ
Document type:Journal article (JA)
Publisher:Wroc&lstrok;aw University of Science and Technology
Abstract:After the concept of X-ray communication was proposed, its application in complex electromagnetic environment has received more attention, such as data transmission in re-enter special electromagnetic condition. In this article, a new type of X-ray source was introduced firstly, which was expected to generate multiple characteristic lines and achieve wavelength division multiplexing technology in X-ray band. Then an experimental platform was built for analyzing transmission characteristics of X-ray photon in various plasma media. Finally, the calculation model for a link power equation was given. Experiment results show that transmittance of 8-18 keV X-ray signal is relatively stable, atomic numbers from 29 to 42 are the most suitable materials for wavelength division multiplexing, the X-ray communication system is expected to realize about 200 kbps data transmission rate in adjacent space.<br/> &copy; 2020 Wroc&Aring;&sbquo;aw University of Science and Technology. All rights reserved.
Number of references:28
Main heading:Atoms
Controlled terms:Data transfer - Plasma sheaths - Wavelength division multiplexing
Uncontrolled terms:Calculation models - Data transmission rates - Electromagnetic environments - Experimental platform - Multiple characteristics - Transmission characteristics - Wavelength division multiplexing technology - X-ray wavelengths
Classification code:931.3  Atomic and Molecular Physics - 932.3  Plasma Physics
Numerical data indexing:Bit_Rate 2.00e+05bit/s
DOI:10.37190/OA200409
Funding details:  Number: 20JY031, Acronym: -, Sponsor: -;Number: 11805150,61901470,62001364, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 20JK0665, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Provincial Department of Education;Number: 2020JQ-818, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:Acknowledgements &ndash; This article was supported by NSFC of China (No. 61901470, No. 62001364 and No. 11805150) and the Basic Research Program of Shaanxi Province Natural Science Foundation (No. 2020JQ-818), the Natural Science Foundation of Shaanxi Provincial Department of Education (No. 20JK0665), and the Collaborative Innovation Center Project of Shaanxi Provincial Department of Education (20JY031). The quasi-static and dynamic-dusty experiments were carried out in the College of Aerospace Science and Technology, XIDIAN University and XIOPM, respectively.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Green
 
<RECORD 21>
 
Accession number:20210809975867
Title:Research Progress of Attosecond Pulse Generation and Characterization (Invited)
Title of translation:&#38463;&#31186;&#33033;&#20914;&#20135;&#29983;&#21644;&#27979;&#37327;&#25216;&#26415;&#30740;&#31350;&#36827;&#23637;(&#29305;&#36992;)
Authors:Wang, Hushan (1); Cao, Huabao (1); Pi, Liangwen (1); Huang, Pei (1); Wang, Xianglin (1); Xu, Peng (1); Yuan, Hao (1, 2); Liu, Xin (1, 2); Wang, Yishan (1); Zhao, Wei (1); Fu, Yuxi (1) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Wang, Yishan(yshwang@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:1
Issue date:January 25, 2021
Publication year:2021
Article number:0132001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Attosecond pulse light source, born at the turn of 21st centruy, is a fully coherent light source with attosecond-temporal and nano-spatial resolution, leading to the remarkable progress and breakthroughs in attosecond science in the past two decades. New research methods and important innovation opportunities in physics, chemistry, biology, materials, information and other fields have emerged with the advent of attoseond pulse. This review surveys the important efforts aimed at developing attosecond pulses, mainly summarizes the key technologies and status of high-order harmonics, attosecond pulse generation and attosecond pulse measurement, and presents the development prospects of attosecond pulse research in the end.<br/> &copy; 2021, Science Press. All right reserved.
Number of references:164
Main heading:Light sources
Controlled terms:Light
Uncontrolled terms:Attosecond pulse - Attosecond pulse generation - Attosecond science - Attoseconds - Development prospects - High order harmonics - Key technologies - Spatial resolution
Classification code:741.1  Light/Optics
DOI:10.3788/gzxb20215001.0132001
Funding details:  Number: S19-020, Acronym: -, Sponsor: -;Number: 202005YK01, Acronym: -, Sponsor: -;Number: 61690222,92050107,XAB2019B25, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: J20-021, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2019JCW-03, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:Foundation item&#65306;Natural Science Basic Research Program of Shaanxi&#65288;No. 2019JCW-03&#65289;&#65292;Major Science and Technology Infrastructure Pre-research Program of the CAS&#65288;No. J20-021-&#8546;&#65289;&#65292;National Natural Science Foundation of China&#65288;No. 92050107&#65289;&#65292;National Natural Science Foundation of China&#65288;No. 61690222&#65289;&#65292;CAS"Light of West China"Program&#65288;No. XAB2019B25&#65289;&#65292;Science and Technology Program of Xi'an&#65288;No. 202005YK01&#65289;&#65292;Key Deployment Research Program of XIOPM&#65288;No. S19-020-&#8546;&#65289;
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 22>
 
Accession number:20213010677900
Title:Waveguide Optimization and Efficiency Characteristic Analysis of 808 nm Laser Diodes
Title of translation:808 nm&#21322;&#23548;&#20307;&#28608;&#20809;&#33455;&#29255;&#27874;&#23548;&#20248;&#21270;&#19982;&#25928;&#29575;&#29305;&#24615;&#20998;&#26512;
Authors:Chang, Yi-Dong (1, 2); Wang, Zhen-Fu (2); Zhang, Xiao-Ying (3); Yang, Guo-Wen (2); Li, Te (2); Du, Yu-Qi (1, 2); Zhao, Yu-Liang (1, 2); Liu, Yu-Xian (1, 2); Lan, Yu (1, 2) 
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) Shaanxi Institute of Metrology Science, Xi'an; 710100, China 
Corresponding author:Wang, Zhen-Fu(wzf2718@opt.ac.cn)
Source title:Faguang Xuebao/Chinese Journal of Luminescence
Abbreviated source title:Faguang Xuebao
Volume:42
Issue:7
Issue date:July 2021
Publication year:2021
Pages:1040-1048
Language:Chinese
ISSN:10007032
CODEN:FAXUEW
Document type:Journal article (JA)
Publisher:Editorial Office of Chinese Optics
Abstract:<div data-language="eng" data-ev-field="abstract">The waveguide thickness of 808 nm InAlGaAs/AlGaAs laser diode chip was optimized in this paper. The study found that when the thickness ratio of the N-waveguide to the P-waveguide was 1.8, the chip had the highest power conversion efficiency. Chip-on-submount(COS) packaged single emitters and fiber-coupled modules@core diameter 62.5 &mu;m, numerical aperture(NA) 0.22 were presented based on this conclusion, and the efficiency characteristic of the devices in the range of -10-90&#8451; was analyzed. The results showed that when the temperature increased from -10 to 90&#8451;, the carrier leakage ratio of COS single emitter increased from 1.18% to 16.67%, and the carrier leakage ratio of fiber-coupled module increased from 1.99% to 17.73%, indicating that the increase of carrier leakage caused by temperature rise was the main factor leading to the decrease of power conversion efficiency. Moreover, the effects of high-temperature aging, thermal vacuum conditions and space radiation on the power conversion efficiency of fiber-coupled module were studied and the internal factors that lead to the reduction of the device's power conversion efficiency were revealed.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:21
Main heading:Semiconductor lasers
Controlled terms:Radiation effects - Diodes - Fibers - Waveguides - Conversion efficiency
Uncontrolled terms:Efficiency characteristic - Fiber coupled modules - High temperature aging - Numerical aperture - Power conversion efficiencies - Thermal vacuum condition - Waveguide optimization - Waveguide thickness
Classification code:525.5  Energy Conversion Issues - 714.3  Waveguides - 744.4.1  Semiconductor Lasers
Numerical data indexing:Percentage 1.18e+00% to 1.67e+01%, Percentage 1.99e+00% to 1.77e+01%, Size 6.25e-05m, Size 8.08e-07m
DOI:10.37188/CJL.20210108
Funding details:  Number: 2017KJXX-72, Acronym: -, Sponsor: -;Number: 61504167, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2019ZY-CXPT-03-05,2019ZY-CXPT-03-05,2018JM6010,2015JQ6263, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: JM6010,JQ6263, Acronym: -, Sponsor: -;
Funding text:&#25910;&#31295;&#26085;&#26399;: 2021-03-24; &#20462;&#35746;&#26085;&#26399;: 2021-04-08 &#22522;&#37329;&#39033;&#30446;: &#22269;&#23478;&#33258;&#28982;&#31185;&#23398;&#22522;&#37329;(61504167); &#38485;&#35199;&#30465;&#33258;&#28982;&#31185;&#23398;&#22522;&#37329;(2019ZY-CXPT-03-05,2018JM6010,2015JQ6263); &#38485;&#35199;&#30465;&#31185;&#25216;&#21381; &#20154;&#25165;&#39033;&#30446;(2017KJXX-72)&#36164;&#21161; Supported by National Natural Science Foundation of China(61504167);Natural Science Foundation of Shaanxi Province (2019ZY-CXPT-03-05,2018JM6010,2015JQ6263);Talent Project of Science and Technology Department of Shaanxi Province (2017KJXX-72)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 23>
 
Accession number:20212510535091
Title:Preparation and Electromagnetic Wave Absorbing Mechanism of Helical Amorphous Carbon Nanotube/Bismaleimide (HACNT/BMI) Resin Composites
Title of translation:&#34746;&#26059;&#22411;&#38750;&#26230;&#24577;&#30899;&#32435;&#31859;&#31649;/&#21452;&#39532;&#26469;&#37232;&#20122;&#33018;&#26641;&#33026;(HACNT/BMI)&#22797;&#21512;&#26448;&#26009;&#30340;&#21046;&#22791;&#21450;&#21560;&#27874;&#26426;&#29702;
Authors:Zhu, Ruoxing (1, 2); Zhao, Tingkai (2); She, Shengfei (3); Li, Tiehu (2) 
Author affiliation:(1) Library of Northwestern Polytechnical University, Xi'an; 710072, China; (2) School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an; 710072, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China 
Source title:Cailiao Daobao/Materials Reports
Abbreviated source title:Cailiao Daobao/Mater. Rep.
Volume:35
Issue:10
Issue date:May 25, 2021
Publication year:2021
Pages:10216-10220
Language:Chinese
ISSN:1005023X
Document type:Journal article (JA)
Publisher:Cailiao Daobaoshe/ Materials Review
Abstract:<div data-language="eng" data-ev-field="abstract">New electromagnetic wave absorbing materials are the hotspot and focus of research in national defense science and technology. Carbonmaterials, as light absorbing materials, have been widely valued by researchers. In this study, we prepared helical amorphous carbon nanotube/bismaleimide (HACNT/BMI) resin composites and investigated their electromagnetic wave absorbing properties. We used helical amorphous carbon nanotubes as adsorbing agents, bismaleimide as matrix to prepare HACNT/BMI resin composites. Helical amorphous carbon nanotubes were prepared by floating catalytic chemical vapor deposition method. Scanning electron microscope (SEM), transmission electron microscope(TEM), X-ray diffractometer (XRD) and Raman spectroscopy were used to characterize the morphology and structure of samples. The electromagnetic parameters of HACNT/BMI composites were measured by vector network analyzer. The results showed that the increasing in the content of absorbing agent enhanced the electromagnetic wave absorbing properties of HACNT/BMI composites. The maximum absorption peak reached -18.35 dB, the widest absorbing bandwidth reached 2.56 GHz(9.52~12.08 GHz) when the R<inf>L</inf> belows -10 dB, and the reflection loss exceeded 97%. Moreover, the absorption peak of HACNT/BMI composites with higher content of HACNTs shifted towards lower frequency compared to that of the sample with lower content of HACNTs. Our results indicate that the helical structures of HACNTs plays an important role in enhancing the electromagnetic wave absorbing performance of HACNT/BMI composites. The HACNTs could increase the possibility of multiple reflection of electromagnetic wave and the path length of scattered waves. As a result, the energy loss of incident electromagnetic wave was increased.<br/></div> &copy; 2021, Materials Review Magazine. All right reserved.
Number of references:21
Main heading:Transmission electron microscopy
Controlled terms:Chemical vapor deposition - Energy dissipation - Electric network analyzers - Scanning electron microscopy - Carbon nanotubes - Incident light - Resins - Amorphous carbon - Circular waveguides
Uncontrolled terms:Catalytic chemical vapor deposition - Electromagnetic parameters - Morphology and structures - Science and Technology - Vector network analyzers - Wave absorbing materials - Wave absorbing performance - Wave-absorbing property
Classification code:525.4  Energy Losses (industrial and residential) - 714.3  Waveguides - 741.1  Light/Optics - 761  Nanotechnology - 802.2  Chemical Reactions - 815.1.1  Organic Polymers - 933.1  Crystalline Solids - 933.2  Amorphous Solids
Numerical data indexing:Decibel -1.00e+01dB, Decibel -1.84e+01dB, Frequency 9.52e+09Hz to 1.21e+10Hz, Percentage 9.70e+01%
DOI:10.11896/cldb.20030156
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 24>
 
Accession number:20214611146508
Title:Progress of NUV and FUV MCP-based photon-counting imaging detectors
Authors:Li, Shizhao (1); Liu, Yong-An (2); Sheng, Li-Zhi (2) 
Author affiliation:(1) Chongqing Vocational Institute Of Engineering, Chongqing; 402260, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Li, Shizhao(249427750@qq.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11915
Part number:1 of 1
Issue title:International Conference on Optics and Image Processing, ICOIP 2021
Issue date:2021
Publication year:2021
Article number:1191508
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510646957
Document type:Conference article (CA)
Conference name:2021 International Conference on Optics and Image Processing, ICOIP 2021
Conference date:June 4, 2021  -  June 6, 2021
Conference location:Guilin, China
Conference code:173231
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Photon counting imaging technology has been widely used in nuclear radiation detection, space environment detection, astronomy observation, nuclear physics and ultra-weak bioluminescence. In this paper, the progress and parameters of NUV (160-320nm) and FUV (102-170nm) photon-counting imaging detectors were described. The NUV detector was developed based on a sealed MCP-image intensifier which comprises input window, photocathode, MCP stack, Ge-layer and its ceramic substrate. To maximize the quantum efficiency, a Cesium Telluride (Cs2Te) photocathode was adopted, which was deposited on input window and mounted close to the MCP. For the FUV detector, because of the lower cut-off wavelength, there are no suitable window materials in this band and the open-faced design should be used to meet the requirements of the detection. Therefore, a Cesium Iodide (CsI) photocathode deposited on the input surface of the MCP was used to optimize detector efficiency. By using an existing wedge and strip anode (WSA), the imaging performance of the NUV and FUV detectors was tested respectively. Experimental results show that the quantum efficiency of Cs2Te is 12.1% (at 230nm), the spatial resolution of NUV and FUV detectors is better than 70&mu;m, the dark count rate of NUV and FUV detectors is about 10.5- A nd 2.3-counts/s&lowast;cm2 respectively.<br/></div> &copy; 2021 SPIE.
Number of references:6
Main heading:Photons
Controlled terms:Cesium iodide - Photocathodes - Tellurium compounds - Quantum efficiency
Uncontrolled terms:Environment detection - Imaging detector - Imaging technology - MCP - Nuclear radiations - Photon-counting imaging - Radiation detection - Space environment - Ultra-weak - Ultraviolet
Classification code:714.1  Electron Tubes - 741.3  Optical Devices and Systems - 804  Chemical Products Generally - 931.3  Atomic and Molecular Physics - 931.4  Quantum Theory; Quantum Mechanics
Numerical data indexing:Electric current 1.05E+01A, Percentage 1.21E+01%, Size 1.02E-07m to 1.70E-07m, Size 1.60E-07m to 3.20E-07m, Size 2.30E-07m, Size 7.00E-05m
DOI:10.1117/12.2605898
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 25>
 
Accession number:20220211450487
Title:Standoff detection of explosive materials using time-gated UV-Raman spectroscopy
Authors:Wang, Bo (1, 2); Zhang, Pu (1); Zhang, Shuyao (3); Zhu, Xiangping (1); Zhao, Wei (1) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No.17 Xinxi Road, New Industrial Park, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, No. 19 Yuquan Road, Shijingshan District, Beijing; 100049, China; (3) Northwest University, No.1 Xuefu Road, Guodu Edu. & Tech. Industrial Park, Xi'an; 710119, China 
Corresponding author:Zhang, Pu
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12064
Part number:1 of 1
Issue title:AOPC 2021: Optical Spectroscopy and Imaging
Issue date:2021
Publication year:2021
Article number:120640Q
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650039
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Optical Spectroscopy and Imaging, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175875
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Improvised explosive devices (IED) and homemade explosives (HMEs) have become the preferred choice for terrorists and insurgents. It's a challenge to develop the techniques to detect explosive hazards at standoff distances. In this paper, a standoff UV Raman spectrum detection system for explosive detection was developed, which can realize 2-10m Raman spectrum detection of solid, solution and trace potassium nitrate samples. The relationship between Raman signal intensity (RSI) and pulse energy, detection distance and sample concentration was studied. The experimental results show that the RSI is approximately proportional to the pluse energy and contains nonlinear terms. It has an inverse square relationship with the detection distance and a linear relationship with the sample concentration. The concentration of solution and trace potassium nitrate samples of were successfully predicted at 2m distance, and the root mean square error of prediction (RMSEP) was 11.7 and 6.1, respectively.A simple and effective method for preparing trace potassium nitrate is presented.<br/></div> Copyright &copy; 2021 SPIE.
Number of references:5
Main heading:Explosives detection
Controlled terms:Potash - Nitrates - Raman scattering - Explosives - Inverse problems - Mean square error - Potassium Nitrate - Raman spectroscopy
Uncontrolled terms:Detection of explosive materials - Explosive Detection - Explosive hazards - Improvised explosives devices - Raman signal intensity - Sample concentration - Spectrum detection - Standoff detection - Standoff Raman - UV-Raman spectroscopy
Classification code:741.1  Light/Optics - 801  Chemistry - 804.2  Inorganic Compounds - 922.2  Mathematical Statistics
Numerical data indexing:Size 2.00E+00m to 1.00E+01m, Size 2.00E+00m
DOI:10.1117/12.2606981
Funding details:  Number: 2019B090917012, Acronym: -, Sponsor: -;Number: 62075237, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:We would like to acknowledge support from the Natural Science Foundation of China under Grant 62075237 and the Key Field Research and Development Plan Project of Guangdong Province 2019B090917012.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 26>
 
Accession number:20212110414100
Title:Testing Characterization and Simulating Optimization of High-power Laser Diode Array Chips
Title of translation:&#39640;&#21151;&#29575;&#21322;&#23548;&#20307;&#28608;&#20809;&#21015;&#38453;&#33455;&#29255;&#27979;&#35797;&#34920;&#24449;&#19982;&#20223;&#30495;&#20248;&#21270;
Authors:Du, Yu-Qi (1, 2); Wang, Zhen-Fu (1); Zhang, Xiao-Ying (3); Yang, Guo-Wen (1); Li, Te (1); Liu, Yu-Xian (1, 2); Li, Bo (1, 2); Chang, Yi-Dong (1, 2); Zhao, Yu-Liang (1, 2); Lan, Yu (1, 2) 
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) Shaanxi Institute of Metrology Science, Xi'an; 710100, China 
Corresponding author:Wang, Zhen-Fu(wzf2718@opt.ac.cn)
Source title:Faguang Xuebao/Chinese Journal of Luminescence
Abbreviated source title:Faguang Xuebao
Volume:42
Issue:5
Issue date:May 2021
Publication year:2021
Pages:674-681
Language:Chinese
ISSN:10007032
CODEN:FAXUEW
Document type:Journal article (JA)
Publisher:Editorial Office of Chinese Optics
Abstract:<div data-language="eng" data-ev-field="abstract">Due to small size, light weight, high efficiency and long operation life, high power semiconductor laser array chips have gradually entered into mass-markets and emerged applications, such as laser pumping, materials processing, medical therapy and lidar. However, limited by high-temperature working environments such as material processing, the development of high power semiconductor laser is hindered. Since laser diode arrays work in high-temperature working environments and generate great quantity during operating, the output power and reliability of high power semiconductor laser is decreased, which is caused by reducing in slope efficiency, increasing in threshold current, and wavelength redshift. Hence, it is vital to research the optoelectronic performance and laser diode array optimization of semiconductor laser under high temperature. To improve the high temperature performance of high-power semiconductor laser chips, firstly, the influence mechanism of environment temperature on internal quantum efficiency is analyzed theoretically. Secondly, in order to quantify the main factors affecting the stability of the chip, the high-power semiconductor laser array chips test system was built to study the characteristics of the laser diode array chips at 15-60&#8451;, and analyze energy loss distribution at various temperatures. The experimental results show that when the temperature rises from 15&#8451; to 60&#8451;, the percentage of carrier leakage loss increases sharply from 2.30% to 11.36%, which is the main factor affecting the high temperature operation of semiconductor laser array chips. Finally, the chip structure simulation shows that increasing the Al composition of the waveguide layer to 20% can effectively limit carrier leakage, balance the increase in series resistance caused by the increase of Al composition, and obtain high electro-optical conversion efficiency. This research can provide a reference for the design of high-temperature laser diode array chips.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:22
Main heading:Semiconductor lasers
Controlled terms:Energy dissipation - Optical radar - Power semiconductor diodes - Electric resistance - High temperature operations - Laser materials processing - Pumping (laser)
Uncontrolled terms:Energy loss distributions - Environment temperature - High power laser diode arrays - High power semiconductor laser - High temperature performance - Internal quantum efficiency - Materials processing - Semiconductor laser arrays
Classification code:525.4  Energy Losses (industrial and residential) - 701.1  Electricity: Basic Concepts and Phenomena - 714.2  Semiconductor Devices and Integrated Circuits - 716.2  Radar Systems and Equipment - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 744.4.1  Semiconductor Lasers - 744.9  Laser Applications
Numerical data indexing:Percentage 2.00e+01%, Percentage 2.30e+00% to 1.14e+01%
DOI:10.37188/CJL.20210014
Funding details:  Number: 61504167, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2019ZY-CXPT-03-05,2018JM6010,2015JQ6263, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 2017KJXX-72,2019ZY-CXPT-03-05,JM6010,JQ6263, Acronym: -, Sponsor: -;
Funding text:&#25910;&#31295;&#26085;&#26399;: 2021-01-05; &#20462;&#35746;&#26085;&#26399;: 2021-01-19 &#22522;&#37329;&#39033;&#30446;: &#22269;&#23478;&#33258;&#28982;&#31185;&#23398;&#22522;&#37329;(61504167); &#38485;&#35199;&#30465;&#33258;&#28982;&#31185;&#23398;&#22522;&#37329;(2019ZY-CXPT-03-05,2018JM6010,2015JQ6263); &#38485;&#35199;&#30465;&#31185;&#25216;&#21381; &#20154;&#25165;&#39033;&#30446;(2017KJXX-72)&#36164;&#21161; Supported by National Natural Science Foundation of China(61504167);Natural Science Foundation of Shaanxi Province (2019ZY-CXPT-03-05,2018JM6010,2015JQ6263); Talent Project of Science and Technology Department of Shaanxi Province (2017KJXX-72)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 27>
 
Accession number:20211410162170
Title:The effect of oceanic turbulence on optical receiving systems
Authors:Sun, Shu-Wei (1, 2); Kang, Fu-Zeng (1); Wang, Hao (1, 2) 
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 
Corresponding author:Kang, Fu-Zeng
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11763
Part number:1 of 1
Issue title:Seventh Symposium on Novel Photoelectronic Detection Technology and Applications
Issue date:2021
Publication year:2021
Article number:1176354
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643611
Document type:Conference article (CA)
Conference name:7th Symposium on Novel Photoelectronic Detection Technology and Applications
Conference date:November 5, 2020  -  November 7, 2020
Conference location:Kunming, China
Conference code:167886
Sponsor:Chinese Society for Optical Engineering (CSOE); Science and Technology on Low-light-level Night Vision Laboratory
Publisher:SPIE
Abstract:With the development of underwater optical communication, imaging and sensing, studies of the effect of oceanic turbulence on optical receiving systems have received increasing attention and become a research focus. Until now, the effect of atmosphere turbulence on optical receiving systems have studied widely and in depth, but those in oceanic turbulence have been researched seldom. It is known that the atmosphere turbulence is induced by the temperature fluctuation, while the oceanic turbulence is induced by both the temperature fluctuation and the salinity fluctuation. Thus, the behavior of laser propagation through oceanic turbulence is very different from that in atmosphere turbulence.The paper focuses on the influence of phase disturbance of optical signal caused by oceanic turbulence on optical receiving, including the theoretical modeling of couple efficiency of space optical signal into single-mode fiber received by annular aperture and the variance of angle-of-arrival (AOA) fluctuation received by finite aperture. The research shows that the couple efficiency of single-mode fiber and the variance of angle-of-arrival fluctuation in oceanic turbulence depend on propagation distance, receiving aperture and oceanic turbulence parameter. The results obtained in this paper will be useful for optical receiving systems involving oceanic turbulence channels.<br/> &copy; 2021 SPIE
Number of references:12
Main heading:Efficiency
Controlled terms:Single mode fibers - Temperature distribution - Direction of arrival - Light propagation - Underwater optical wireless communication
Uncontrolled terms:Angle of arrival fluctuations - Atmosphere turbulence - Propagation distances - Receiving aperture - Salinity fluctuation - Temperature fluctuation - Theoretical modeling - Underwater optical communications
Classification code:641.1  Thermodynamics - 675  Marine Engineering - 716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 741.1.2  Fiber Optics - 913.1  Production Engineering
DOI:10.1117/12.2587149
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 28>
 
Accession number:20211810295262
Title:Unobtrusive vital signs and activity monitoring based on dual mode fiber
Authors:Xu, Wei (1, 2); Bian, Shihang (3); Dong, Bo (1, 2, 4); Shen, Ying (3); Han, Shuying (3); Yu, Changyuan (5); Zhao, Wei (1, 2, 4); Wang, Yishan (1, 2, 4) 
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 Electronic & Information Engineering, Soochow University, 215006, China; (4) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; Shanxi; 030006, China; (5) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon; Hong Kong, China 
Corresponding author:Dong, Bo(dbo1978@163.com)
Source title:Optical Fiber Technology
Abbreviated source title:Opt. Fiber Technol.
Volume:64
Issue date:July 2021
Publication year:2021
Article number:102530
Language:English
ISSN:10685200
CODEN:OFTEFV
Document type:Journal article (JA)
Publisher:Academic Press Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">A solid unobtrusive fiber-optic sensor based on modal interference in dual mode fiber (DMF) embedded in a thin mat is proposed and investigated theoretically and experimentally, realizing real-time vital signs and activity monitoring. The whole sensing setup only consists of one laser diode, one section of DMF, one photo-detector and few standard single mode fibers (SMFs). The DMF fiber is sandwiched into the SMFs using core-offset splicing, i.e., SMF-DMF-SMF structure. The optimal value of the core offset is numerically simulated and experimentally validated. It has to be noted that all the fibers used in the experiment are with 900-&mu;m protection jacket, which can effectively avoid fiber breaking. The proposed sensor is both investigated in different postures and different subjects. And the results of vital signs monitoring performance show great consistency compared with commercial monitors. Besides, the activity monitoring is also addressed with one-second discrimination resolution, identifying three basic states, i.e., on bed, body movement and off bed. It is easy to fabricate and shows great potential in future non-invasive vital signs and activity monitoring applications.<br/></div> &copy; 2021 Elsevier Inc.
Number of references:29
Main heading:Single mode fibers
Controlled terms:Structural optimization - Patient monitoring - Fiber optic sensors
Uncontrolled terms:Activity monitoring - Body movements - Dual-mode fibers - Modal interference - Optimal values - Standard single mode fibers - Vital sign - Vital signs monitoring
Classification code:461.6  Medicine and Pharmacology - 741.1.2  Fiber Optics - 921.5  Optimization Techniques
Numerical data indexing:Size 9.00e-04m
DOI:10.1016/j.yofte.2021.102530
Funding details:  Number: Y829321213, Acronym: -, Sponsor: -;Number: 61971372, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The work is partially financially supported by the CAS Pioneer Hundred Talents Program (Y829321213) and National Natural Science Foundation of China (61971372).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 29>
 
Accession number:20213410819650
Title:Femtosecond Chirped Pulse Amplification System with Liquid Crystal Spatial Light Modulator for Spectral Modulation
Title of translation:&#22522;&#20110;&#28082;&#26230;&#31354;&#38388;&#20809;&#35843;&#21046;&#22120;&#36827;&#34892;&#20809;&#35889;&#35843;&#21046;&#30340;&#39134;&#31186;&#21825;&#21886;&#33033;&#20914;&#25918;&#22823;&#31995;&#32479;
Authors:Duan, Yufei (1, 2); Li, Feng (1); Yang, Zhi (1); Li, Qianglong (1); Yang, Yang (1); Wu, Tianhao (1, 2); Wang, Yishan (1); Yang, Xiaojun (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 
Corresponding authors:Li, Feng(lifeng@opt.ac.cn); Yang, Xiaojun(yxj@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:48
Issue:11
Issue date:June 10, 2021
Publication year:2021
Article number:1101001
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press
Abstract:<div data-language="eng" data-ev-field="abstract">Objective: Compared with traditional solid-state lasers, such as slats and wafers, femtosecond fiber lasers have many advantages, including compact structures, good beam quality, stable systems, and good heat dissipation. They are widely used in various application fields, particularly in the field of fine material processing. The current femtosecond fiber laser is mainly used to reduce the problems of nonlinearity and device damage in the amplification process using the chirped pulse amplification technology to obtain a femtosecond laser with its peak power and narrow pulse width meeting processing requirements. Owing to the increase in the energy demand of an industrial fiber laser, the amplification classes also gradually increase, rendering the narrowing effect due to an uneven gain medium increasingly severe and influencing the final spectral width. Thus, its occurrence increases the compressed pulse width limit, reduces the pulse peak power, and severely impacts the thermal diffusion in processing. Currently, the gain narrowing problem of a femtosecond fiber laser can be solved using self-phase modulation, a new amplifying stage system, or dielectric layer filters. However, these approaches can only form fixed spectral modulation, which cannot solve the gain narrowing problem in different amplification or laser systems with different power requirements of the same amplification system. Therefore, programmable devices are proposed to achieve the controllability of spectral modulation. Among them, the liquid crystal spatial light modulator, a common element for beam shaping and pulse shaping, exhibits higher regulating precision than the general acousto-optic filter. For a fiber laser seed source, its spectral width is only a few nanometers or tens of nanometers; the liquid crystal spatial light modulator is more suitable for fiber laser spectral modulation. This study focuses on the characteristics of the spatial light modulator and the requirement of a chirp pulse amplification system for spectral modulation. The solutions of a spectral shaping system are proposed based on the two-dimensional (2D) intensity-type liquid crystal spatial light modulator for spectral modulation. The chirped pulse amplification system eliminates the gain narrowing problem and achieves a narrower output pulse duration. Methods: Herein, the 2D intensity-type liquid crystal spatial light modulator was used for spectral modulation. First, the seed source is amplified using the single-mode amplification system and enters the spectral shaping system, which comprises the polarization-splitting prism, grating, and the intensity of reflection-type liquid crystal spatial light modulator to perform various spectral modulation shapes and verify the programmability and high precision of the spectral shaping system. Then, the subsequent multi-mode amplification and main amplification systems with an optical fiber aperture of 25 &mu;m were established. The shape required for spectral shaping, which can be compared with the initial spectrum function to achieve a 2D grayscale map, was obtained using the step-by-step Fourier transform method combined with reverse operation. Next, the grayscale image was loaded into the spatial light modulator, and the spectral widths before and after the addition of the grayscale image were compared to investigate the influence of the shaping system on the spectra and the reasons for the spectral shape formation. Finally, the near-limited output pulse duration of the femtosecond laser was obtained by compressing an appropriate distance by the 1450 line/mm grating, and the pulse duration was measured using an autocorrelation instrument to determine the optimization results of pulse duration. Results and Discussions: The spectrum can be reshaped into flat-top, central-depression, triangle, continuous- depression, and other shapes using the spectral shaping system (Fig.4). Generally, as the spectral shaping becomes more complex and its shaping effect becomes worse, the modulation of the liquid crystal void generated using the liquid crystal spatial light modulator becomes increasingly obvious. After adding the main amplification system, the spectral width before entering the amplification system is reduced by approximately 1.5 nm (Fig.5) and the gain narrowing effect is evident. The grayscale map obtained using reverse operation was loaded on the 2D liquid crystal spatial light modulator to obtain the super-Gaussian spectral shape (Fig.6) after spectral shaping and amplification. The full width at half maximum of this spectrum is approximately 9.5 nm. The spectral width is approximately 2.5 nm, and the corresponding limited pulse duration is reduced from 222 fs to approximately 164 fs. Finally, the pulse duration of 170 fs, close to the limit, can be obtained after the laser with spectral shaping is compressed through the grating. Compared with that of direct compression, the pulse duration is decreased by 86 fs. Moreover, the pulse shape has a side lobe owing to the liquid crystal spacing problem of the liquid crystal spatial light modulator (Fig.7). Conclusions: Results show that the spectral shaping system can realize the arbitrary spectral modulation using the liquid crystal spatial light modulator. It can also set the spectral bandpass characteristics by regulating the function of different spectral component gains and realize dynamic matching using the subsequent amplification spectrum. Thus, this system is suitable for different conditions of gain spectrum modulation demand and can achieve a pulse duration close to the limit to meet the narrow output pulse duration and peak power of a femtosecond laser. Moreover, it achieves the purpose of efficient material cold working and satisfies the high requirements of the thermal effect for femtosecond laser applications. However, the improved results can be obtained using a modulator with a higher filling rate and smaller clearance for spectral shaping.<br/></div> &copy; 2021, Chinese Lasers Press. All right reserved.
Number of references:20
Main heading:Fibers
Controlled terms:Light modulators - Phase modulation - Spectroscopy - Fiber lasers - Light modulation - Laser materials processing - Liquid crystals - Ultrashort pulses - Chirp modulation - Optical pulse shaping
Uncontrolled terms:Bandpass characteristics - Chirp pulse amplification system - Chirped pulse amplification systems - Chirped pulse amplifications - Femtosecond fiber lasers - Fourier transform method - Liquid crystal spatial light modulators - Spatial light modulators
Classification code:713.4  Pulse Circuits - 716  Telecommunication; Radar, Radio and Television - 741.1  Light/Optics - 744.4  Solid State Lasers - 744.9  Laser Applications
Numerical data indexing:Size 1.50e-09m, Size 2.50e-05m, Size 2.50e-09m, Size 9.50e-09m, Time 1.64e-13s, Time 1.70e-13s, Time 8.60e-14s
DOI:10.3788/CJL202148.1101001
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 30>
 
Accession number:20210909995006
Title:Free-carrier-assisted mid-infrared microcavity soliton generation    (Open Access)
Authors:Fan, Weichen (1, 2); Sun, Qibing (1, 2); Lu, Zhizhou (1, 2); Wang, Leiran (1, 2); Zhao, Wei (1, 2); Zhang, Wenfu (1, 2) 
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 
Source title:Journal of Applied Physics
Abbreviated source title:J Appl Phys
Volume:129
Issue:8
Issue date:February 28, 2021
Publication year:2021
Article number:083106
Language:English
ISSN:00218979
E-ISSN:10897550
CODEN:JAPIAU
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:Multi-photon absorption (MPA) and free-carrier (FC) effects, usually considered to be detrimental to microcomb generation by introducing strong nonlinear loss, also offer opportunities to overwhelm the thermal-optic effect by modifying the refractive index. Here, we derive the theoretical expression of solitons expanded with MPA and FC effects, accompanied by numerical simulations to reveal the dynamics and mechanism for capturing steady mid-infrared solitons in both Si and Ge microcavities. It is found that with increased FC lifetime, the intensity-dependent MPA underlies non-monotonous variation of nonlinear detuning which enables soliton generation. More interestingly, proper control on the FC lifetime admits bidirectional switching of soliton states (i.e., both decreasing and increasing the number of solitons) as well as self-starting solitons, yielding different technique routes toward microcavity solitons. This research could contribute to a better understanding of nonlinear behaviors influenced by FC effects and find practical applications by releasing the demand on precise control of laser sources, which is especially meaningful for the mid-infrared region.<br/> &copy; 2021 Author(s).
Number of references:36
Main heading:Solitons
Controlled terms:Refractive index - Multiphoton processes - Infrared devices - Microcavities
Uncontrolled terms:Intensity-dependent - Mid-infrared regions - Multi-photon absorption - Nonlinear behavior - Nonlinear loss - Precise control - Soliton generation - Theoretical expression
Classification code:714  Electronic Components and Tubes - 741.1  Light/Optics
DOI:10.1063/5.0037921
Funding details:  Number: 61635013,61675231,61705257,61805277, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XDB24030600, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2016353, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;
Funding text:The authors thank Hairun Guo and Xiaohong Hu for valuable discussions. The authors acknowledge the support from the National Natural Science Foundation of China (NNSFC) (Grant Nos. 61635013, 61675231, 61705257, and 61805277), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB24030600), and the Youth Innovation Promotion Association of CAS (No. 2016353).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Green
 
<RECORD 31>
 
Accession number:20212510544803
Title:Intensity Demodulation Technology of FBG Time Division Multiplexing Based on Sagnac Ring
Title of translation:&#22522;&#20110;Sagnac&#29615;&#30340;FBG&#26102;&#20998;&#22797;&#29992;&#24378;&#24230;&#35299;&#35843;&#25216;&#26415;
Authors:Wang, Xiaoli (1, 2); Dong, Bo (1); Chen, Enqing (1, 2); Li, Yang (1, 2) 
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 
Corresponding author:Dong, Bo(bdong@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:5
Issue date:May 25, 2021
Publication year:2021
Article number:0506003
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">A method of fiber Bragg grating time-division multiplexing intensity demodulation based on Sagnac fiber ring is presented. The time-multiplexing sensing system, consisted of the several FBG gratings with the same central-wavelength, can demodulate the signals by observing the intensity changes of the output spectrum of the FBG gratings. In the signal processing module, the wavelet analysis and Gaussian simulation algorithm are combined to demodulate the system signal together. The experimental results show that the signal-to-noise ratio of the system signal is increased by about 36% from 8.06 dB to 11.7 dB, which effectively improves the anti-interference ability of the system and the detection accuracy for the external parameters. The proposed method effectively increases the number of fiber Bragg grating sensors in the demodulation system with less cost and can be widely applied to various sensor systems or parameter detection systems.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:23
Main heading:Fiber Bragg gratings
Controlled terms:Demodulation - Fiber optic sensors - Optical signal processing - Optical variables measurement - Signal to noise ratio - Time division multiplexing
Uncontrolled terms:Anti-interference - Central wavelength - Demodulation system - Detection accuracy - Fiber Bragg Grating Sensors - Gaussian simulations - Intensity demodulation - Parameter detection
Classification code:716.1  Information Theory and Signal Processing - 741.1.2  Fiber Optics - 941.4  Optical Variables Measurements
Numerical data indexing:Decibel 8.06e+00dB to 1.17e+01dB, Percentage 3.60e+01%
DOI:10.3788/gzxb20215005.0506003
Funding details:  Number: Y829321213, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:Hundred Talents Program of Chinese Academy of Sciences (No. Y829321213).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 32>
 
Accession number:20213310780852
Title:Compact 2D serpentine optical phased array
Authors:Ren, Yangming (1, 2); Zhang, Lingxuan (1, 2); Zhao, Wei (1, 2); Wang, Guoxi (1, 2); Feng, NingNing (1, 2); Wu, Wei (1, 2); Sun, Xiaochen (1, 2); Zhang, Wenfu (1, 2) 
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 
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:60
Issue:24
Issue date:August 20, 2021
Publication year:2021
Pages:7158-7163
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">We present a two-dimensional (2D) Si photonics optical phased array (OPA) using a serpentine design which eliminates the long directional couplers used in many 2D OPA designs. It significantly reduces the distance between the antenna benefitting far-field sidelobe reduction while maintaining high optical power use efficiency.<br/></div> &copy; 2021 Optical Society of America
Number of references:25
Main heading:Serpentine
Controlled terms:Silicon
Uncontrolled terms:Far field - High optical power - Optical phased arrays - Si photonics - Side-lobe reduction - Two Dimensional (2 D) - Use efficiency
Classification code:482.2  Minerals - 549.3  Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
DOI:10.1364/AO.431942
Funding details:  Number: 201903, Acronym: -, Sponsor: -;Number: 12004421,61635013,61675231, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XDB24030600, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2019JQ-447, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 2016535, Acronym: YIPA, Sponsor: Youth Innovation Promotion Association;Number: XAB2017A09, Acronym: -, Sponsor: West Light Foundation of the Chinese Academy of Sciences;
Funding text:Strategic Priority Research Program of the Chinese Academy of Sciences (XDB24030600); National Natural Science Foundation of China (12004421, 61635013, 61675231); Youth Innovation Promotion Association (2016535); West Light Foundation of the Chinese Academy of Sciences (XAB2017A09); Natural Science Foundation of Shaanxi Province (2019JQ-447); Research Project of Xi'an Postdoctoral Innovation Base (201903).Funding. Strategic Priority Research Program of the Chinese Academy of Sciences (XDB24030600); National Natural Science Foundation of China (12004421, 61635013, 61675231); Youth Innovation Promotion Association (2016535); West Light Foundation of the Chinese Academy of Sciences (XAB2017A09); Natural Science Foundation of Shaanxi Province (2019JQ-447); Research Project of Xi&rsquo;an Postdoctoral Innovation Base (201903).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 33>
 
Accession number:20214611156548
Title:Effective suppression of mode distortion induced by stimulated Raman scattering in high-power fiber amplifiers
Authors:Gao, Wei (1, 2, 3); Fan, Wenhui (1, 3, 5); Ju, Pei (1, 3); Li, Gang (1, 3); Zhang, Yanpeng (2); He, Aifeng (4); Gao, Qi (1, 3); Li, Zhe (1, 3) 
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) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Laboratory of Information Photonic Technique, Xi'An Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Key Laboratory on Applied Physics and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi'an; 710061, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding authors:Fan, Wenhui(fanwh@opt.ac.cn); Zhang, Yanpeng(fanwh@opt.ac.cn)
Source title:High Power Laser Science and Engineering
Abbreviated source title:High Power Laser Sci. Eng.
Issue date:2021
Publication year:2021
Article number:e20
Language:English
E-ISSN:20523289
Document type:Article in Press
Publisher:Cambridge University Press
Abstract:<div data-language="eng" data-ev-field="abstract">Mode distortion induced by stimulated Raman scattering (SRS) has become a new obstacle for the further development of high-power fiber lasers with high beam quality. Here, an approach for effective suppression of the SRS-induced mode distortion in high-power fiber amplifiers has been demonstrated experimentally by adjusting the seed power (output power of seed source) and forward feedback coefficient of the rear port in the seed source. It is shown that the threshold power of the SRS-induced mode distortion can be increased significantly by reducing the seed power or the forward feedback coefficient. Moreover, it has also been found that the threshold power is extremely sensitive to the forward feedback power value from the rear port. The influence of the seed power on the threshold power can be attributed to the fact that the seed power plays an important role in the effective length of the gain fiber in the amplifier. The influence of the forward feedback coefficient on the threshold power can be attributed to the enhanced SRS configuration because the end surface of the rear port together with the fiber in the amplifier constitutes a half-opening cavity. This suppression approach will be very helpful to further develop the high-power fiber amplifiers with high beam quality.<br/></div> &copy; The Author(s), 2021. Published by Cambridge University Press in association with Chinese Laser Press.
Number of references:42
Main heading:Stimulated Raman scattering
Controlled terms:Feedback amplifiers - Fiber amplifiers - Fiber lasers - Fibers
Uncontrolled terms:Effective suppression - High beam quality - High power fiber amplifier - High power fiber lasers - Mode distortion - Output power - Stimulated raman scatterings (SRS) - Threshold power
Classification code:711  Electromagnetic Waves - 713.1  Amplifiers - 741.1  Light/Optics - 744.4  Solid State Lasers
DOI:10.1017/hpl.2021.13
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 34>
 
Accession number:20211910311300
Title:Force and Torque Analysis of Micro-sized Particles in Perfect Optical Vortex Beams
Title of translation:&#23436;&#32654;&#28065;&#26059;&#20809;&#20013;&#24494;&#31859;&#32423;&#31890;&#23376;&#30340;&#21463;&#21147;&#19982;&#21147;&#30697;&#29305;&#24615;&#20998;&#26512;
Authors:Zhang, Yanan (1, 2); Li, Manman (1); Yan, Shaohui (1); Zhou, Yuan (1, 2); Li, Xing (1, 2); Yao, Baoli (1, 2) 
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 
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:3
Issue date:March 25, 2021
Publication year:2021
Article number:0308002
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Based on the tightly focusing approach, the perfect optical vortex beams are generated at the geometric focal plane. The optical forces and torques exerted on the micro-sized particle in the perfect optical vortex beams are calculated. Numerical results show that the micro-sized particle is trapped on the ring of perfect optical vortex beams and is driven to rotate around the optical axis. The orbital torque will firstly increases and then tends to be stable with the increase of the topological charge value. In addition, the influence of circular polarization state, radial polarization state and azimuthal polarization state on the force and orbital torque of micro-sized particles are investigated in perfect optical vortex beams. The results show that the state of polarization of perfect optical vortex beams will affect the optically induced orbital motion to some extent. The circular polarization state of perfect optical vortex beams is superior to drive the orbital motion of the particle.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:30
Main heading:Torque
Controlled terms:Vortex flow - Circular polarization
Uncontrolled terms:Azimuthal polarization - Circular polarization state - Force and torques - Micro-sized particles - Optical vortex beam - Radial polarization - State of polarization - Topological charges
Classification code:631.1  Fluid Flow, General - 701.1  Electricity: Basic Concepts and Phenomena - 711  Electromagnetic Waves - 931.2  Physical Properties of Gases, Liquids and Solids
DOI:10.3788/gzxb20215003.0308002
Funding details:  Number: 11904395,11974417, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:item&#65306;National Natural Science Foundation of China&#65288;Nos. 11974417&#65292;11904395&#65289;
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 35>
 
Accession number:20211410162136
Title:X-ray communication experiment using photocathode X-ray tube
Authors:Liu, Yong-An (1, 2); Xuan, Hao (1, 2); Sheng, Li-Zhi (1); Qiang, Peng-Fei (1); Su, Tong (1); Tian, Jin-Shou (1); Zhao, Bao-Sheng (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 
Corresponding author:Liu, Yong-An(liuya@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11763
Part number:1 of 1
Issue title:Seventh Symposium on Novel Photoelectronic Detection Technology and Applications
Issue date:2021
Publication year:2021
Article number:117638U
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643611
Document type:Conference article (CA)
Conference name:7th Symposium on Novel Photoelectronic Detection Technology and Applications
Conference date:November 5, 2020  -  November 7, 2020
Conference location:Kunming, China
Conference code:167886
Sponsor:Chinese Society for Optical Engineering (CSOE); Science and Technology on Low-light-level Night Vision Laboratory
Publisher:SPIE
Abstract:In this paper, a novel X-ray tube, which uses a photocathode as an electron emission source, is first introduced. The X-ray tube with photocathode can use an external light source to control the output of photoelectrons, thereby controlling the characteristics of the emitted X-rays. Compared with the traditional X-ray tube with hot cathode, the X-ray emitted by the photocathode X-ray tube is completely modulated by the external light source. Therefore, X-rays can achieve instant on-off and arbitrary pulse waveform emission, and have extremely high time resolution. The basic characteristics of the photocathode X-ray tube was tested. By using the developed X-ray tube and LED light source, preliminary X-ray communication experiments have been carried out. The results show that the digital signal restoration with a frequency of up to 1MHz can be achieved. Except for X-ray communication, the developed photocathode X-ray tube can also have important applications in many fields such as radiation calibration and scintillator afterglow measurement.<br/> &copy; 2021 SPIE
Number of references:11
Main heading:Light sources
Controlled terms:Photocathodes - Signal reconstruction - Electron emission - Tubes (components) - X ray tubes - Light
Uncontrolled terms:Arbitrary pulse - Basic characteristics - Digital signals - Electron emission sources - High-time resolution - Hot cathodes - LED light source - Radiation calibration
Classification code:619.1  Pipe, Piping and Pipelines - 714.1  Electron Tubes - 716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 741.3  Optical Devices and Systems
Numerical data indexing:Frequency 1.00e+06Hz
DOI:10.1117/12.2587619
Funding details:  Number: XAB2018A07, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2018438, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;
Funding text:This work was supported by the CAS "Light of West China" Program (No. XAB2018A07) and the Youth Innovation Promotion Association CAS (No.2018438).This work was supported by the CAS "Light of West China" Program (No. XAB2018A07) andthe Youth Innovation
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 36>
 
Accession number:20220211442601
Title:Optical design of a light-controlled pulsed x-ray source with photocathode
Authors:Zhang, Xuehan (1, 2); Sheng, Lizhi (1); Qiang, Pengfei (1); Xuan, Hao (1, 2); Liu, Yongan (1); Zhao, Baosheng (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 
Corresponding author:Sheng, Lizhi(lizhi_sheng@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12062
Part number:1 of 1
Issue title:AOPC 2021: Optoelectronics and Nanophotonics
Issue date:2021
Publication year:2021
Article number:120620N
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510649996
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Optoelectronics and Nanophotonics, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175866
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">X-rays have the characteristics of high single photon energy, high frequency, and strong penetrating ability, are widely used in space communication, radiation imaging, medical diagnosis, non-destructive testing, and other fields. The development of X-rays has had a positive impact on broadening the use of the electromagnetic spectrum. As the core component of the X-ray application, high modulation rate, low power consumption, and excellent performance X-ray generators have been a hot research topic for decades. In this paper, a light-controlled pulsed X-ray source is modeled by simulation software. We perform simulation calculations and summary analysis on the effects of cathode structure, focus structure height, and metal anode voltage on the focal spot size, electron transit-time, and transit-time spread. At an operating voltage of 30KV, if the photocathode is 42mm in diameter, the focal spot diameter is about 1.5mm, the electron transit-time is 3.75ns, and the transit-time spread is 895ps when the focusing structure height is 6mm. And if the diameter of the photocathode is 12mm, the focal spot diameter is the smallest when the focusing pole height is 9mm, which is about 0.7mm, as for the time characteristics, the electron transit-time is 4.1ns, and the transit-time spread is 242ps. The results suggest that the light-controlled pulsed X-ray source is expected to be the next-generation source with easy modulation and short X-ray pulse properties.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:13
Main heading:Diagnosis
Controlled terms:Medical imaging - Optical design - Photocathodes - Nondestructive examination - X ray apparatus - Modulation - Computer software - Electron sources - Particle beams
Uncontrolled terms:Electron transit time - Fast response - Focal-spot - Photocathode - Pulsed X-ray source - Pulsed x-ray sources - Pulsed X-rays - Spots diameter - Transit time spread - X-ray sources
Classification code:461.1  Biomedical Engineering - 461.6  Medicine and Pharmacology - 714.1  Electron Tubes - 723  Computer Software, Data Handling and Applications - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 746  Imaging Techniques - 932.1  High Energy Physics
Numerical data indexing:Size 1.20E-02m, Size 1.50E-03m, Size 4.20E-02m, Size 6.00E-03m, Size 7.00E-04m, Size 9.00E-03m, Time 2.42E-10s, Time 3.75E-09s, Time 4.10E-09s, Time 8.95E-10s
DOI:10.1117/12.2606631
Funding details:  Number: SKLIPR2021, Acronym: -, Sponsor: -;Number: 61901470, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XAB2018A07,XAB2020YN13, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:This work has been supported by the National Natural Science Foundation of China (Grant No.61901470), the Key Research and Development Program of Shaanxi Province (Grant No.2020GY-032), CAS "Light of West China" Program (Grant No. XAB2018A07), CAS "Light of West China" Program (Grant No. XAB2020YN13), and the Foundation of State Key Laboratory of China (Grant No. SKLIPR2021).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 37>
 
Accession number:20211710263888
Title:Direct axial plane imaging of particle manipulation with nondiffracting Bessel beams
Authors:An, Sha (1, 2); Peng, Tong (1, 2); Yan, Shaohui (1); Zhang, Peng (1); Li, Manman (1); Yao, Baoli (1, 2) 
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 
Corresponding author:Yao, Baoli(yaobl@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:60
Issue:11
Issue date:April 10, 2021
Publication year:2021
Pages:2974-2980
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Optical manipulation with nondiffracting beams has been attracting great interest and finding widespread applications in many fields such as chemistry, physics, and biomedicine. Generally, optical manipulation is conducted in an optical microscopy system, which, in general, only allows for imaging motions of particles in the transverse plane, rendering the observation of dynamics processes occurring in the axial plane impractical.We propose and demonstrate an optical manipulation system that incorporates an axial plane imaging module. With this system, the trapping behavior in the transverse plane and the transportation process in the axial plane of a particle immersed in a Bessel beamwere acquired simultaneously in real time.<br/></div> &copy; 2021 Optical Society of America.
Number of references:40
Main heading:Laser beams
Controlled terms:Optical constants
Uncontrolled terms:Axial planes - Bessel beam - Nondiffracting - Nondiffracting beam - Optical manipulation - Particle manipulation - Transportation process - Transverse planes
Classification code:741.1  Light/Optics - 744.8  Laser Beam Interactions
DOI:10.1364/AO.417854
Funding details:  Number: 11904395,11974417,61705256, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Funding. National Natural Science Foundation of China (11904395, 11974417, 61705256).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 38>
 
Accession number:20215011321631
Title:Theoretical and Experimental Research of X-ray Communication in Shielded Environment
Title of translation:&#23631;&#34109;&#29615;&#22659;&#19979;X&#23556;&#32447;&#36890;&#20449;&#20256;&#36755;&#29702;&#35770;&#19982;&#23454;&#39564;&#30740;&#31350;
Authors:Zhang, Xuehan (1, 2); Su, Tong (1); Sheng, Lizhi (1); Liu, Yongan (1); Zhao, Baosheng (1) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Su, Tong(sutong@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:11
Issue date:November 25, 2021
Publication year:2021
Article number:1134002
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Based on the theoretical model of the interaction between X-rays and matter, the transmission characteristics of X-rays in an electromagnetic shielding environment are studied, and the feasibility of X-rays communication for information transmission in an electromagnetic shielding environment is theoretically demonstrated. After that, a numerical simulation model of X-ray communication in a shielded environment is established, and the communication parameters of X-rays in an electromagnetic shielded environment are analyzed to achieve the index constraint of the core components. Finally, based on the key technologies of X-ray modulated emission and single-photon X-ray detection, an equivalent verification experiment of X-ray passing through the shielding material is conducted to realize the experimental verification of X-ray communication with a communication rate better than 23 kbps. The results are expected to provide some theoretical basis and experimental foundation for solving the radiation data transmission in a shielded environment.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:27
Main heading:Particle beams
Controlled terms:Electromagnetic shielding - Transmissions
Uncontrolled terms:Experimental research - Information transmission - Numerical simulation models - Power transmission equations - Theoretical modeling - Theoretical research - Transmission characteristics - X-ray communication - X-ray detections - X-ray sources
Classification code:602.2  Mechanical Transmissions - 932.1  High Energy Physics
Numerical data indexing:Bit rate 2.30E+04bit/s
DOI:10.3788/gzxb20215011.1134002
Funding details:  Number: 61901470, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2020GY-032, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:National Natural Science Foundation of China (No.61901470), Key Research and Development Program of Shaanxi Province (No. 2020GY-032)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 39>
 
Accession number:20211910328976
Title:A sealed X-ray microchannel plate imager with CsI photocathode to improve quantitative precision of framing camera
Authors:Yang, Yang (1, 2); Zhu, Bingli (1, 2); Gou, Yongsheng (1); Chen, Zhen (1, 2); Bai, Xiaohong (1, 5); Qin, Junjun (1, 5); Bai, Yonglin (1, 2); Liu, Baiyu (1); Cao, Weiwei (1, 4); Wang, Bo (1, 2); Xu, Peng (1, 3) 
Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100091, China; (4) Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, Xi'an Jiaotong University, Xi'an; 710049, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Bai, Yonglin(baiyonglin@opt.ac.cn)
Source title:Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abbreviated source title:Nucl Instrum Methods Phys Res Sect A
Volume:1005
Issue date:July 21, 2021
Publication year:2021
Article number:165404
Language:English
ISSN:01689002
CODEN:NIMAER
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">In this paper, we propose a hermetically sealed X-ray microchannel plate imager as a more effective and stable alternative to the traditional open-structured imager. With two microstrip photocathodes of 100 nm Au and 100 nm CsI, respectively, the proposed imager has a measured exposure time of 65 ps when applied with a 200 ps width gate pulse. The static response test shows that the image intensity of the CsI microstrip photocathode is 3.4 times that of the Au microstrip photocathode when illuminated by a non-monochromatic portable X-ray source with high energy photons. The sealed imager not only enhances the sensitivity and stability of the framing camera, but also has the potential to reduce crosstalks and artifacts, thus further improves the precision of measurement in practice.<br/></div> &copy; 2021
Number of references:24
Main heading:X ray detectors
Controlled terms:Field emission cathodes - Cesium iodide - Cameras - Photocathodes - Microchannels - Gold - Image enhancement - Image storage tubes
Uncontrolled terms:CsI photocathodes - Exposure-time - Framing Camera - Fusion diagnosis - Hermetically sealed - Micro channel plate - Micro-channel plate - Micro-strips - Ultra-fast diagnostic - X-ray detector
Classification code:547.1  Precious Metals - 714.1  Electron Tubes - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment - 804  Chemical Products Generally
Numerical data indexing:Size 1.00E-07m, Time 2.00E-10s, Time 6.50E-11s
DOI:10.1016/j.nima.2021.165404
Funding details:  Number: 6140721010203, Acronym: -, Sponsor: -;Number: XAB2016B25, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: -, Sponsor: West Light Foundation of the Chinese Academy of Sciences;
Funding text:This research was funded by the Equipment Pre-research Field Fund, China (Grant No. 6140721010203 ) and by the West Light Foundation of the Chinese Academy of Sciences (Grant No. XAB2016B25 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 40>
 
Accession number:20212310447556
Title:Genetic-algorithm-based deep neural networks for highly efficient photonic device design
Authors:Ren, Yangming (1, 2); Zhang, Linxuan (1, 2); Wang, Weiqiang (1, 2); Wang, Xinyu (1, 2); Lei, Yufang (1, 2); Xue, Yulong (1, 2); Sun, Xiaochen (1, 2); Zhang, Wenfu (1, 2) 
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 
Corresponding authors:Sun, Xiaochen(sunxiaochen@opt.ac.cn); Zhang, Wenfu(wfuzhang@opt.ac.cn)
Source title:Photonics Research
Abbreviated source title:Photon. Res.
Volume:9
Issue:6
Issue date:June 1, 2021
Publication year:2021
Pages:B247-B252
Language:English
ISSN:23279125
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">While deep learning has demonstrated tremendous potential for photonic device design, it often demands a large amount of labeled data to train these deep neural network models. Preparing these data requires high-resolution numerical simulations or experimental measurements and cost significant, if not prohibitive, time and resources. In this work, we present a highly efficient inverse design method that combines deep neural networks with a genetic algorithm to optimize the geometry of photonic devices in the polar coordinate system. The method requires significantly less training data compared with previous inverse design methods. We implement this method to design several ultra-compact silicon photonics devices with challenging properties including power splitters with uncommon splitting ratios, a TE mode converter, and a broadband power splitter. These devices are free of the features beyond the capability of photolithography and generally in compliance with silicon photonics fabrication design rules.<br/></div> &copy; 2021 Chinese Laser Press
Number of references:34
Main heading:Deep neural networks
Controlled terms:Design - Inverse problems - Silicon photonics - Genetic algorithms - Photonic devices
Uncontrolled terms:Fabrication designs - High-resolution numerical simulation - Inverse design methods - Large amounts - Neural network model - Polar coordinate systems - Power splitters - Splitting ratio
Classification code:461.4  Ergonomics and Human Factors Engineering - 741.1  Light/Optics - 741.3  Optical Devices and Systems
DOI:10.1364/PRJ.416294
Funding details:  Number: 201903, Acronym: -, Sponsor: -;Number: 12004421,61635013,61675231, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XDB24030600, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2016535, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;Number: XAB2017A09, Acronym: -, Sponsor: West Light Foundation of the Chinese Academy of Sciences;Number: 2019JQ-447, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:Strategic Priority Research Program of the Chinese Academy of Sciences (XDB24030600); National Natural Science Foundation of China (12004421, 61635013, 61675231); Youth Innovation Promotion Association of Chinese Academy of Sciences (2016535); West Light Foundation of the Chinese Academy of Sciences (XAB2017A09); Natural Science Basic Research Program of Shaanxi (2019JQ-447); Research Project of Xi'an Postdoctoral Innovation Base (201903).Funding. Strategic Priority Research Program of the Chinese Academy of Sciences (XDB24030600); National Natural Science Foundation of China (12004421, 61635013, 61675231); Youth Innovation Promotion Association of Chinese Academy of Sciences (2016535); West Light Foundation of the Chinese Academy of Sciences (XAB2017A09); Natural Science Basic Research Program of Shaanxi (2019JQ-447); Research Project Postdoctoral Innovation Base (201903).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 41>
 
Accession number:20214911279038
Title:A visible light photon-counting imaging detector based on induction readout
Authors:Liu, Yong'An (1, 2); Liu, Yifan (1, 2); Wei, Yonglin (1); Yang, Xianghui (1); Zhang, Ruili (1); Zhao, Hui (1); Tian, Jinshou (1); Sheng, Lizhi (1); Zhao, Baosheng (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 
Corresponding author:Liu, Yong'an(liuya@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11896
Part number:1 of 1
Issue title:Advanced Optical Imaging Technologies IV
Issue date:2021
Publication year:2021
Article number:1189618
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510646414
Document type:Conference article (CA)
Conference name:Advanced Optical Imaging Technologies IV 2021
Conference date:October 10, 2021  -  October 11, 2021
Conference location:Nantong, China
Conference code:174445
Sponsor:Chinese Optical Society (COS); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Photon-counting imaging detectors based on microchannel plate (MCP) and position-sensitive anode are characterized by extremely high sensitivity, as well as the ability to detect single photons. In this study, a visible light photon-counting imaging detector based on induction readout was developed for the detection of weak light intensities, such as photon counting radar and biofluorescence lifetime imaging. The design is based on a 25 mm diameter multi-alkali S20 photocathode followed by a MCP stack, and read out by a high-resistance Ge layer anode. The position-sensitive anode was located at the atmosphere side of the Ge substrate. Such a detector was advantageous in terms of reconfigurability and detachability. The imaging performance of the detector was tested by using the wedge and strip anode to decode the photon event position information. The experimental results showed a detector gain reaching about 3&times;106, pulse height resolution (PHR) of about 105%, and spatial resolution better than 100&mu;m.<br/></div> &copy; 2021 SPIE.
Number of references:16
Main heading:Anodes
Controlled terms:Image resolution - Light - Germanium - Photons
Uncontrolled terms:High sensitivity - Imaging detector - Induction readout - Light photon - Micro channel plate - Photon-counting imaging - Position-sensitive anodes - Single photons - Spatial resolution - Visible light
Classification code:549.3  Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 714.1  Electron Tubes - 741.1  Light/Optics - 931.3  Atomic and Molecular Physics
Numerical data indexing:Percentage 1.05E+02%, Size 1.00E-04m, Size 2.50E-02m
DOI:10.1117/12.2602541
Funding details:  Number: XAB2018A07, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2018438, Acronym: YIPA, Sponsor: Youth Innovation Promotion Association;Number: 2021JM-214, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:This work was supported by the Chinese Academy of Sciences "Light of West China" Program (No. XAB2018A07),This work was supported by the Chinese Academy of Sciences "Light of West China" Program (No. XAB2018A07), the Youth Innovation Promotion Association, Chinese Academy of Sciences (No. 2018438) and Natural Science Basic Research Program of Shaanxi (No. 2021JM-214).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 42>
 
Accession number:20205009610622
Title:High-performance solid-state photon-enhanced thermionic emission solar energy converters with graded bandgap window-layer
Authors:Yang, Yang (1, 4); Xu, Peng (1, 2); Cao, Weiwei (1, 2, 3); Zhu, Bingli (1, 5); Wang, Bo (1); Bai, Yonglin (1, 4); Qin, Junjun (2, 5); Bai, Xiaohong (4); Chen, Zhen (1) 
Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100091, China; (3) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Laboratory of Information Photonic Technique, Xi'an Jiaotong University, Xi'an; 710049, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Yang, Yang(yangyang@opt.cn)
Source title:Journal of Physics D: Applied Physics
Abbreviated source title:J Phys D
Volume:54
Issue:5
Issue date:February 4, 2021
Publication year:2021
Article number:055502
Language:English
ISSN:00223727
E-ISSN:13616463
CODEN:JPAPBE
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:To realize a high-performance solid-state photon-enhanced thermionic emission (SPETE) solar energy converter, in this study, a graded bandgap window layer is therefore adopted, throughout which the bandgap gradation is generated via the variation of Al composition in the layer in the SPETE converter with a GaAs absorber. Based on one-dimension steady-state equation, an analytical model is formed in analyzing performance of the proposed device in our study. Theoretical simulation results indicate that not only are the losses of contact surface recombination being decreased via the bandgap-gradation-induced build-in electric field of the window layer, but also the photon-generated electrons are effectively collected, thereby improving the conversion efficiency. Moreover, the effect of bandgap energy of the contact surface and the width of the window layer on device performance is discussed. A trade-off of high-efficient SPETE converters is therefore realized between large contact surface bandgap and thin window layer width, to which the rationale lies in the improved process of electron collection facilitated by the enhanced build-in electric field rather than reducing the photon absorption in the window layer. Threshold values for barrier height at the emitting interface are presented to guarantee the ideal voltage-current characteristic. It is found that the threshold values of barrier increase with the increase in temperatures.<br/> &copy; 2020 IOP Publishing Ltd.
Number of references:29
Main heading:Energy gap
Controlled terms:Gallium arsenide - Solar energy - III-V semiconductors - Thermionic emission - Electric fields - Equations of state - Solid state devices - Photons - Aluminum gallium arsenide - Economic and social effects
Uncontrolled terms:Device performance - Electron collections - Energy converters - Improved process - Photon absorptions - Steady state equation - Theoretical simulation - Voltage-current characteristics
Classification code:657.1  Solar Energy and Phenomena - 701.1  Electricity: Basic Concepts and Phenomena - 712.1  Semiconducting Materials - 712.1.2  Compound Semiconducting Materials - 714.2  Semiconductor Devices and Integrated Circuits - 804  Chemical Products Generally - 931.3  Atomic and Molecular Physics - 971  Social Sciences
DOI:10.1088/1361-6463/abbb04
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 43>
 
Accession number:20212310453809
Title:All-optical tunable fiber filter based on a few-mode optical fiber mode interferometer coated with graphene epoxy resin composite material
Authors:Chen, Enqing (1, 2); Dong, Bo (3); Li, Yang (1, 2); Li, Ziwan (1, 2); Wang, Xiaoli (1, 2); Zhao, Yudi (1); Xu, Wei (1, 2); Zhao, Wei (1, 2, 4); Wang, Yishan (1, 2) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) College of new materials and new energy, Shenzhen Technology University, Shenzhen; 518118, China; (4) Collaborative Innovation Center of Extreme Optics Shanxi University, Taiyuan; 030006, China 
Corresponding author:Dong, Bo(dongbo@sztu.edu.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:497
Issue date:October 15, 2021
Publication year:2021
Article number:127140
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">A compact all-optical tunable fiber filter based on a few-mode optical fiber modal interferometer coated with graphene epoxy resin composite material is proposed and experimentally demonstrated. The interferometer is constructed with a 2-cm FMF connected to two single mode fibers. After coating the graphene epoxy resin composite material on the outside of the interferometer, it shows the all-optical wavelength tunability, and experimental results show that the wavelength shift changes quasilinearly with the pump power changing. The wavelength tunable range reaches 5.062 nm with a step of 0.016 nm/mw. It is expected to have practical application in optical communication, fiber sensing, fiber laser and optical spectrum analysis.<br/></div> &copy; 2021 Elsevier B.V.
Number of references:18
Main heading:Graphene
Controlled terms:Composite materials - Epoxy resins - Interferometers - Optical fiber communication - Spectrum analysis - Fiber lasers - Single mode fibers
Uncontrolled terms:All optical - Composites material - Epoxy resin composites - Few-mode optical fiber - Fiber mode - Filter-based - Modal interferometers - Optical- - Tunable fiber filter - Tunable modal interferometer filter
Classification code:717.1  Optical Communication Systems - 741.1.2  Fiber Optics - 744.4  Solid State Lasers - 761  Nanotechnology - 804  Chemical Products Generally - 815.1.1  Organic Polymers - 941.3  Optical Instruments - 951  Materials Science
Numerical data indexing:Size 1.60E-11m, Size 2.00E-02m, Size 5.062E-09m
DOI:10.1016/j.optcom.2021.127140
Funding details:  Number: Y829321213, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This work is supported by the CAS Pioneer Hundred Talents Program, China Y829321213 .
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 44>
 
Accession number:20215011321997
Title:Theoretical and Technical Research of X-ray Communication in Plasma Sheath
Title of translation:&#31561;&#31163;&#23376;&#20307;&#38808;&#22871;&#20013;X&#23556;&#32447;&#36890;&#20449;&#20256;&#36755;&#29702;&#35770;&#19982;&#23454;&#39564;&#30740;&#31350;
Authors:Su, Tong (1); Sheng, Lizhi (1); Liu, Yongan (1, 2); Zhang, Xuehan (1, 2); Liu, Yifan (1, 2); Zhao, Baosheng (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 
Corresponding author:Sheng, Lizhi(lizhi_sheng@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:11
Issue date:November 25, 2021
Publication year:2021
Article number:1134001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Because of the imperfect theoretical model and insufficient experimental verification technologies, the problem of information transmission in the plasma sheath has not yet been resolved. In this paper, the interaction mechanism between X-ray photons and plasma is studied firstly, and a modified theoretical model is provided through numerical calculation and theoretical modeling. Different from the conclusion that X-rays can penetrate plasma without attenuation in the traditional wave model, the modified theoretical model established in this paper points out that the transmittance of X-rays in plasma is closely related to plasma electron density and incident X-ray flux. Secondly, an experimental system was built using a grid-controlled X-ray modulation emission source, a single-photon X-ray detector, and a dynamic plasma generator. Using this system, the non-uniform plasma which electron density ranges from 10<sup>9</sup>/cm<sup>3</sup> to 10<sup>14</sup>/cm<sup>3</sup> is generated, and the X-ray communication with 1 Mbps communication rante and 10<sup>-5</sup> bit error rate is also verified. The experimental results indicate that the modified theoretical model can explain and predict the experimental phenomena, and the experimental system can provide the solution for solving the communication problems in the plasma sheath.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:21
Main heading:Photons
Controlled terms:Electron density measurement - Particle beams - Carrier concentration - Transmissions - Plasma sheaths - Bit error rate - Plasma diagnostics - X ray detectors
Uncontrolled terms:Experimental system - Experimental verification - Plasma generation - Single photon detection - Technical research - Theoretical modeling - Theoretical research - Transmission link - Transmission link equation - X-ray communication
Classification code:602.2  Mechanical Transmissions - 701.1  Electricity: Basic Concepts and Phenomena - 723.1  Computer Programming - 931.3  Atomic and Molecular Physics - 932.1  High Energy Physics - 932.3  Plasma Physics
Numerical data indexing:Bit rate 1.00E+06bit/s
DOI:10.3788/gzxb20215011.1134001
Funding details:  Number: 61901470, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2020GY-032, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:National Natural Science Foundation of China (No.61901470), Key Research and Development Program of Shaanxi Province (No. 2020GY-032)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 45>
 
Accession number:20210109710602
Title:Secondary electron emission characteristics of the Al<inf>2</inf>O<inf>3</inf>/MgO double-layer structure prepared by atomic layer deposition
Authors:Cao, Weiwei (1, 2, 3); Wang, Bo (1); Yang, Yang (1); Zhu, Bingli (1, 5); Guo, Junjiang (3, 4, 5); Xu, Peng (1, 3, 6); Bai, Xiaohong (1, 6); Qin, Junjun (1, 5); Wang, Chao (1, 5); Zhu, Jingping (2); Bai, Yonglin (1, 5) 
Author affiliation:(1) Key Laboratory of Ultrafast Photoelectric Diagnostic Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100091, China; (4) Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (5) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (6) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; Shanxi; 030006, China 
Corresponding author:Bai, Yonglin(baiyonglin@opt.ac.cn)
Source title:Ceramics International
Abbreviated source title:Ceram Int
Volume:47
Issue:7
Issue date:April 1, 2021
Publication year:2021
Pages:9866-9872
Language:English
ISSN:02728842
CODEN:CINNDH
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:As a secondary electron emission layer, an Al<inf>2</inf>O<inf>3</inf>/MgO double-layer structure is fabricated by atomic layer deposition (ALD) technology. The thickness range from 1 nm to 4 nm of the top Al<inf>2</inf>O<inf>3</inf> layer deposited on 20 nm MgO creates a double-layer. The morphology of the cross section, element distribution, surface roughness, X-ray diffraction, and secondary electron yield (SEY) values were measured by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), atomic force microscopy (AFM) and secondary electron emission (SEE) measurement systems. The SEE characteristics of the MgO single layer, Al<inf>2</inf>O<inf>3</inf> single layer and MgO/Al<inf>2</inf>O<inf>3</inf> double-layer were measured. The maximum SEY of a single MgO layer reached 6.2@600 eV, and the maximum SEY of a single Al<inf>2</inf>O<inf>3</inf> layer reached 3.92@400 eV. The SEY of the Al<inf>2</inf>O<inf>3</inf>/MgO double-layer decreased when the Al<inf>2</inf>O<inf>3</inf> thickness ranged from 1 nm to 4 nm, and the SEY reduction value of the double-layer decreased as the Al<inf>2</inf>O<inf>3</inf> thickness increased. Finally, Dionne's semiempirical SEE model was employed to explain the SEE yield of the prepared composite film structures. These results are useful for depositing a secondary electron emission layer in the channel of microchannel plates.<br/> &copy; 2020
Number of references:29
Main heading:Atomic layer deposition
Controlled terms:Scanning electron microscopy - Energy dispersive spectroscopy - Alumina - Aluminum oxide - Magnesia - Plates (structural components) - Composite films - Film preparation - Surface morphology - Morphology  - Secondary emission - Electrons - Microchannels - Surface roughness
Uncontrolled terms:Double layer structure - Element distribution - Energy dispersive spectroscopies (EDS) - Measurement system - Micro channel plate - Reduction values - Secondary electron emissions - Secondary electron yield
Classification code:408.2  Structural Members and Shapes - 804.2  Inorganic Compounds - 813.1  Coating Techniques - 931.2  Physical Properties of Gases, Liquids and Solids - 933.1.2  Crystal Growth - 951  Materials Science
Numerical data indexing:Size 1.00e-09m to 4.00e-09m, Size 2.00e-08m
DOI:10.1016/j.ceramint.2020.12.128
Funding details:  Number: 6140721010203, Acronym: -, Sponsor: -;Number: 11675258,11803074,61904202, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XDA17010203, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2018JM6059, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:This work was financially supported by the National Natural Science Foundation of China (Grant No. 61904202, Grant No. 11803074, Grant No. 11675258), Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA17010203), the Shaanxi Natural Science Basic Research Project (Grant No. 2018JM6059) and the Equipment Pre-research Field Fund (Grant No. 6140721010203).This work was financially supported by the National Natural Science Foundation of China (Grant No. 61904202 , Grant No. 11803074 , Grant No. 11675258 ), Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA17010203 ), the Shaanxi Natural Science Basic Research Project (Grant No. 2018JM6059 ) and the Equipment Pre-research Field Fund (Grant No. 6140721010203 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 46>
 
Accession number:20212610567802
Title:Dark matter-wave gap solitons of Bose-Einstein condensates trapped in optical lattices with competing cubic-quintic nonlinearities
Authors:Chen, Junbo (1, 2); Zeng, Jianhua (1, 2) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Zeng, Jianhua(zengjh@opt.ac.cn)
Source title:Chaos, Solitons and Fractals
Abbreviated source title:Chaos Solitons Fractals
Volume:150
Issue date:September 2021
Publication year:2021
Article number:111149
Language:English
ISSN:09600779
CODEN:CSFOEH
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">Solitons are nonlinear self-sustained wave excitations and probably among the most interesting and exciting emergent nonlinear phenomenon in the corresponding theoretical settings. Bright solitons with sharp peak and dark solitons with central notch have been well known and observed in various nonlinear systems. The interplay of periodic potentials, like photonic crystals and lattices in optics and optical lattices in ultracold atoms, with the dispersion has brought about gap solitons within the finite band gaps of the underlying linear Bloch-wave spectrum and, particularly, the bright gap solitons have been experimentally observed in these nonlinear periodic systems, while little is known about the underlying physics of dark gap solitons. Here, we theoretically and numerically investigate the existence, property and stability of one-dimensional matter-wave gap solitons and soliton clusters of Bose-Einstein condensates trapped in optical lattices with competing cubic-quintic nonlinearity, the higher-order of which is self-defocusing and the lower-order (cubic) one is chosen as self-defocusing or focusing nonlinearities. By means of the conventional linear-stability analysis and direct numerical calculations with initial perturbations, we identify the stability and instability areas of the corresponding dark gap solitons and clusters ones.<br/></div> &copy; 2021 Elsevier Ltd
Number of references:78
Main heading:Optical lattices
Controlled terms:Nonlinear optics - Statistical mechanics - Control nonlinearities - Optical materials - Solitons - Crystal lattices - Energy gap - Bose-Einstein condensation - Linear stability analysis - Nonlinear equations
Uncontrolled terms:Bose-Einstein condensates - Cubic-quintic nonlinearity - Dark gap soliton - Dark matter - Gap soliton - Matter waves - Nonlinear schr&ouml;dinge equation - Optical- - Self-defocusing - Wave excitation
Classification code:731.1  Control Systems - 741.1.1  Nonlinear Optics - 741.3  Optical Devices and Systems - 744.8  Laser Beam Interactions - 921  Mathematics - 922.2  Mathematical Statistics - 931.1  Mechanics - 931.2  Physical Properties of Gases, Liquids and Solids - 931.3  Atomic and Molecular Physics - 933.1.1  Crystal Lattice
DOI:10.1016/j.chaos.2021.111149
Funding details:  Number: 12074423,61690222,61690224, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (NSFC) (Nos. 61690224 , 61690222 , 12074423 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 47>
 
Accession number:20214611156350
Title:Axial resolution enhancement for planar Airy beam light-sheet microscopy via the complementary beam subtraction method
Authors:Liu, Chao (1, 2); Yu, Xianghua (1); Bai, Chen (1); Li, Xing (1, 2); Zhou, Yuan (1, 2); Yan, Shaohui (1); Min, Junwei (1); Dan, Dan (1); Li, Runze (1); Gu, Shuangyu (1, 2); Yao, Baoli (1, 2) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:60
Issue:32
Issue date:November 10, 2021
Publication year:2021
Pages:10239-10245
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Airy beam light-sheet illumination can extend the field of view (FOV) of light-sheet fluorescence microscopy due to the unique propagation properties of non-diffraction and self-acceleration.However, the side lobes create undesirable out-of-focus background, leading to poor axial resolution and low image contrast. Here, we propose an Airy complementary beam subtraction (ACBS) method to improve the axial resolution while keeping the extended FOV. By scanning the optimized designed complementary beam that has two main lobes (TML), the generated complementary light-sheet has almost identical intensity distribution to that of the planar Airy light-sheet except for the central lobe. Subtraction of the two images acquired by double exposure respectively using the planar Airy light-sheet and the planar TML light-sheet can effectively suppress the influence of the out-of-focus background. The axial resolution improves from &sim;4 &mu;m to 1.2 &mu;m. The imaging performance was demonstrated by imaging specimens of aspergillus conidiophores and GFP labeled mouse brain section. The results show that the ACBS method enables the Airy beam light-sheet fluorescence microscopy to obtain better imaging quality.<br/></div> &copy; 2021 Optical Society of America.
Number of references:33
Main heading:Fluorescence microscopy
Controlled terms:Fluorescence
Uncontrolled terms:Airy beams - Axial resolutions - Field of views - Light sheet - Light-sheet microscopies - Main lobes - Out-of-focus - Propagation properties - Resolution enhancement - Subtraction method
Classification code:741.1  Light/Optics - 931.4  Quantum Theory; Quantum Mechanics - 941.3  Optical Instruments
Numerical data indexing:Size 4.00E-06m to 1.20E-06m
DOI:10.1364/AO.441070
Funding details:  Number: 11704405,61905277,61975233, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2020GY-008,2020SF-193, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:Funding. National Natural Science Foundation of China (11704405, 61905277, 61975233); Key Research and Development Program of Shaanxi Province (2020GY-008, 2020SF-193).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 48>
 
Accession number:20212010360135
Title:Development Current Status and Trend Analysis of Satellite Laser Communication(Invited)
Title of translation:&#21355;&#26143;&#28608;&#20809;&#36890;&#20449;&#21457;&#23637;&#29616;&#29366;&#19982;&#36235;&#21183;&#20998;&#26512;(&#29305;&#36992;)
Authors:Gao, Duorui (1, 2, 3); Xie, Zhuang (1, 2, 3); Ma, Rong (1, 2, 3); Wang, Wei (1, 2); Bai, Zhaofeng (1, 2); Jia, Shuaiwei (1, 2, 3); Shao, Wen (1, 2, 3); Xie, Xiaoping (1, 2, 3) 
Author affiliation:(1) Laboratory of Photonics and Network, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding authors:Wang, Wei(wangwei2012@opt.ac.cn); Xie, Xiaoping(xxp@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:4
Issue date:April 25, 2021
Publication year:2021
Article number:0406001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Satellite laser communication, with its wide bandwidth and no electromagnetic spectrum constraints, has become an effective means to solve the bandwidth bottleneck of satellite microwave communication, alleviate the shortage of satellite spectrum resources and realize high-speed satellite communication. This paper introduces the system composition and characteristics of satellite laser communication, and analyzes the development context, latest progress and future development plans of satellite laser communication technology at international and domestic. Combined with the requirements of future space network and deep-space exploration, this paper summarizes from five aspects of high-speed, deep-space, integration, networking and all-optical, and discusses the key technologies involved in the future, which can provide reference for the research of satellite laser communication technology in China.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:99
Main heading:Satellites
Controlled terms:Interplanetary flight - Bandwidth - Optical communication - Space research - Satellite communication systems
Uncontrolled terms:Bandwidth bottlenecks - Deep-space exploration - Development plans - Electromagnetic spectra - Microwave communications - Satellite communications - Satellite laser communication - System composition
Classification code:655.2  Satellites - 655.2.1  Communication Satellites - 656.1  Space Flight - 656.2  Space Research - 716.1  Information Theory and Signal Processing - 717.1  Optical Communication Systems
DOI:10.3788/gzxb20215004.0406001
Funding details:  Number: 61231012,91638101, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:item&#65306;National Natural Science Foundation of China&#65288;Nos.61231012&#65292;91638101&#65289;
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 49>
 
Accession number:20205109635226
Title:Super-resolution and optical sectioning integrated structured illumination microscopy
Authors:Dan, Dan (1); Gao, Peng (2); Zhao, Tianyu (1, 3); Dang, Shipei (1, 3); Qian, Jia (1, 3); Lei, Ming (1); Min, Junwei (1); Yu, Xianghua (1); Yao, Baoli (1, 3) 
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) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Journal of Physics D: Applied Physics
Abbreviated source title:J Phys D
Volume:54
Issue:7
Issue date:February 4, 2021
Publication year:2021
Article number:074004
Language:English
ISSN:00223727
E-ISSN:13616463
CODEN:JPAPBE
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:Super-resolution structured illumination microscopy (SR-SIM) has attracted a great deal of attention in the past few decades. As a wide-field imaging technique, SR-SIM usually suffers from issues relating to out-of-focus background, particularly when imaging thick samples. In this study, we develop an integrated SIM with simultaneous SR and optical sectioning (OS) capabilities, facilitating SR imaging of stacked optical sections, with the out-of-focus background suppressed. The combination of the merits of SR and OS is realized by means of a new image reconstruction algorithm. We confirm the validity of the integrated SIM, both experimentally and in simulation. We anticipate that this integrated SIM will assist biologists in obtaining much clearer SR images in relation to thick specimens.<br/> &copy; 2020 IOP Publishing Ltd.
Number of references:30
Main heading:Optical resolving power
Controlled terms:Image reconstruction
Uncontrolled terms:Image reconstruction algorithm - Optical sectioning - Optical sections - Out-of-focus - Structured illumination microscopy - Super resolution - Thick samples - Wide field imaging
Classification code:741.1  Light/Optics
DOI:10.1088/1361-6463/abc4a8
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 50>
 
Accession number:20213810925184
Title:Dependence of field splitting characteristics on metallic components topological configuration in multilaminar plasmonic films
Authors:Kang, Yifan (1, 2, 3); Yang, Hongtao (1); Wang, Chao (4); Li, Yongfeng (5); Cao, Weiwei (1) 
Author affiliation:(1) The Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (2) The University of Chinese Academy of Sciences, Beijing; 100049, China; (3) The Air Force Engineering University, Xi'an; 710051, China; (4) The Center for Attosecond Science and Technology, State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (5) The Xi'an University of Posts & Telecommunications, Xi'an; 710121, China 
Corresponding author:Wang, Chao(igodwang@163.com)
Source title:IEEE Transactions on Nanotechnology
Abbreviated source title:IEEE Trans. Nanotechnol.
Volume:20
Issue date:2021
Publication year:2021
Pages:715-725
Language:English
ISSN:1536125X
E-ISSN:19410085
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">The dependence of field splitting characteristics of multilaminar plasmonic structure on its metallic components topology is analyzed. It is found that the coupling interaction between metallic-particle-centered localized surface plasmons generates a collective effect, collective metallic-particles-centered plasmons, to dominantly determine the plasmonic resonances of the structure. When the metallic particles filling ratio within the matrix is high, this collective effect may cause resonance splitting phenomenon and greatly enlarge the frequency range of field splitting enhancement, which is the physical mechanism and also the designing guideline for multilaminar plasmonic broadband perfect absorber. The surface plasmon polaritons are concurrently superimposed on the metallic-particles-centered collective effect to establish an inter-group coupling competition effect, which may strengthen or weaken the preexisting resonance processes through constructive or destructive field interference in between. This serves as the theoretical base for narrowband field splitting enhancement applications. Moreover, we have revealed the existence of the corresponding relationship between the specific field splitting resonance and those participating or dominating metallic particles involved, which provides the advantages to finely tailor field splitting characteristics through precise implantation of nanoparticles.<br/></div> &copy; 2021 IEEE.
Number of references:36
Main heading:Magnetic resonance
Controlled terms:Electromagnetic wave polarization - Metals - Topology - Surface plasmons - Plasmonics
Uncontrolled terms:Competition effects - Coupling interaction - Localized surface plasmon - Metallic component - Physical mechanism - Plasmonic resonances - Surface plasmon polaritons - Topological configuration
Classification code:701.2  Magnetism: Basic Concepts and Phenomena - 711  Electromagnetic Waves - 921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory - 932.3  Plasma Physics
DOI:10.1109/TNANO.2021.3112704
Funding details:  Number: 11675258, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China (NSFC) under Grant 11675258.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 51>
 
Accession number:20211310138894
Title:Prediction of milling forces in high-speed milling optical grade SiCp/Al composites
Title of translation:&#39640;&#36895;&#38115;&#21066;&#20809;&#23398;&#32423;SiCp/Al&#22797;&#21512;&#26448;&#26009;&#30340;&#38115;&#21066;&#21147;&#39044;&#27979;
Authors:Guo, Lin (1); Huang, Shu-Tao (1); Yang, Hai-Cheng (2); Xu, Li-Fu (3); Zhang, Yu-Pu (3) 
Author affiliation:(1) Shenyang Ligong University, Shenyang; 110159, China; (2) Xian Institute of Applied Optics and Precision Mechanics of CAS, Xi'an; 710068, China; (3) Shenyang Ligong University, School of Mechanical Engineering, Shenyang; 110159, China 
Corresponding authors:Huang, Shu-Tao(syithst@sylu.edu.cn); Yang, Hai-Cheng(yyhhcc62@163.com)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:29
Issue:1
Issue date:January 2021
Publication year:2021
Pages:117-129
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:Under the conditions of down and up milling, to compare the variation characteristics of milling forces of a polycrystalline-diamond single-tooth end mill with a diamond grain size of 32 &mu;m when milling optical-grade SiCp/Al composites at high speed, the effects of the milling method and milling amounts on milling forces characteristics were studied. The empirical formulae of milling forces were also established based on a multiple linear regression analysis method. An L9(3<sup>4</sup>) orthogonal cutting experiment was conducted to study the influence of milling amounts on the cutting force under the two conditions. A rotary dynamometer was then used to collect the signals of each milling force, and an empirical formula of tangential force F<inf>t</inf>, radial force F<inf>r</inf>, axial force F<inf>z</inf>, and total milling force F<inf>total</inf> was then established using the multiple linear regression analysis method. Experimental results demonstrated that the milling force calculated using the established regression formula was significantly high, and the average error of the model was within 10%. Under the two milling conditions, the highest level of influence on each milling force was the axial cutting depth, followed by the feed per tooth and cutting speed. To obtain smaller cutting forces, a smaller axial cutting depth should first be selected, followed by a smaller feed per tooth and a higher cutting speed.<br/> &copy; 2021, Science Press. All right reserved.
Number of references:28
Main heading:Milling (machining)
Controlled terms:Particle reinforced composites - Particle size analysis - Cutting - Linear regression - Silicon carbide - Aluminum
Uncontrolled terms:High speed milling - Milling conditions - Multiple linear regression analysis - Orthogonal cutting - Polycrystalline diamonds - Regression formulas - SiCp/Al composites - Variation characteristics
Classification code:541.1  Aluminum - 604.2  Machining Operations - 804.2  Inorganic Compounds - 922.2  Mathematical Statistics - 951  Materials Science
Numerical data indexing:Percentage 1.00e+01%, Size 3.20e-05m
DOI:10.37188/OPE.20212901.0117
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 52>
 
Accession number:20213810900937
Title:Collective multipartite Einstein-Podolsky-Rosen steering via cascaded four-wave mixing of rubidium atoms
Authors:Liu, Yang (1, 2, 3); Cai, Yin (1); Luo, Binshuo (1); Yan, Jin (1); Niu, Mengqi (1); Li, Feng (1); Zhang, Yanpeng (1) 
Author affiliation:(1) Key Laboratory for Physical Electronics and Devices, Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, Xi'An Jiaotong University, Xi'an; 710049, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Cai, Yin(caiyin@xjtu.edu.cn)
Source title:Physical Review A
Abbreviated source title:Phys. Rev. A
Volume:104
Issue:3
Issue date:September 2021
Publication year:2021
Article number:033704
Language:English
ISSN:24699926
E-ISSN:24699934
Document type:Journal article (JA)
Publisher:American Physical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Collective multipartite Einstein-Podolsky-Rosen (EPR) steering is a type of quantum correlation shared among n parties, where the EPR paradox of one party can be realized only by performing local measurements on all the remaining n-1 parties. Here, we propose an efficient method to produce collective multipartite EPR steering via symmetrically and asymmetrically cascading parametric amplification processes, i.e., four-wave mixing (FWM) of rubidium atoms. The simplified collective-steering criterion is introduced using the Coffman-Kundu-Wootters monogamy relation. Moreover, by actively adjusting the parametric gains, the collective EPR steerability is optimized in our schemes. We find that the scale of collective steering can be extended by cascading more FWMs; in particular, introducing optical loss is useful for generating collective steering with more parties only in the asymmetry structure. Our results pave the way for the construction of quantum networks and provide a promising candidate for one-sided device-independent quantum cryptography among multiple users.<br/></div> &copy; 2021 American Physical Society.
Number of references:64
Main heading:Four wave mixing
Controlled terms:Rubidium
Uncontrolled terms:Cascaded four-wave mixing - Einstein-Podolsky-rosen - Local measurement - Parametric amplification - Parametric gain - Quantum correlations - Quantum network - Rubidium atoms
Classification code:549.1  Alkali Metals
DOI:10.1103/PhysRevA.104.033704
Funding details:  Number: 2021TD-56, Acronym: -, Sponsor: -;Number: 11904279,12074303,12174302,61975159, Acronym: NNSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: CSC, Sponsor: China Scholarship Council;Number: BK20180322, Acronym: -, Sponsor: Natural Science Foundation of Jiangsu Province;Number: 2017YFA0303700, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:The authors gratefully acknowledge Q. He and Y. Xiang for helpful discussions. The authors recognize the National Key R&D Program of China (Grant No. 2017YFA0303700), the National Natural Science Foundation of China (Grants No. 11904279, No. 61975159, No. 12074303, and No. 12174302), the National Science Foundation of Jiangsu Province (Grant No. BK20180322), and the Key Scientific and Technological Innovation Team of Shaanxi Province (Grant No. 2021TD-56). Y.L. also thanks the China Scholarship Council for financial support.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 53>
 
Accession number:20213110707042
Title:Design and Modulation Performance of Ultrafast Light-controlled Pulsed X-ray Tube with Photocathode
Title of translation:&#22522;&#20110;&#20809;&#30005;&#38452;&#26497;&#30340;&#36229;&#24555;X&#23556;&#32447;&#28304;&#35774;&#35745;&#21450;&#35843;&#21046;&#24615;&#33021;&#30740;&#31350;
Authors:Xuan, Hao (1, 2); Liu, Yongan (1); Qiang, Pengfei (1); Su, Tong (1); Yang, Xianghui (1); Sheng, Lizhi (1); Zhao, Baosheng (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) School of Optoelectronics, University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:7
Issue date:July 25, 2021
Publication year:2021
Article number:0725001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">In order to solve the easy-broken structure, low energy efficiency and heat dissipation of the traditional X-ray tube with filament based on thermionic cathode, a novel light-controlled pulsed X-ray tube device is deostrated in this paper. By matching the parameters of photocathode and light source, S20 cathode with high quantum efficiency and LED with 460 nm wavelength were selected. At the same time, the overall structure design of the X-ray tube is determined by the simulation. Finally, the maximum tube current of 2.37 mA is realized, the electron emission efficiency of photocathode is 0.288 mA/lm, and the output X-ray energy is adjustable from 0 to 25 keV. In addition, based on the characteristics of easy-access to be modulated of the light-controlled pulsed X-ray tube, different frequencies input signal restoration experiment and arbitrary contor X-ray restoration experiment was carried out.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:16
Main heading:Energy efficiency
Controlled terms:X ray tubes - Thermionic emission - Photocathodes - Energy dispersive X ray analysis
Uncontrolled terms:Different frequency - Electron emission efficiency - High quantum efficiency - Pulsed X-rays - Signal restoration - Structure design - Tube currents - X-ray energies
Classification code:525.2  Energy Conservation - 714.1  Electron Tubes - 741.3  Optical Devices and Systems - 801  Chemistry - 944.8  Radiation Measurements
Numerical data indexing:Electric_Current 2.37e-03A, Electron_Volt 0.00e+00eV to 2.50e+04eV, Size 4.60e-07m
DOI:10.3788/gzxb20215007.0725001
Funding details:  Number: 61901470, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: U1931138, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (Nos.61901470, U1931138), the Strategic Pioneer Program on Space Science, Chinese Academy of Science ( No.XDA15020501-04), CAS "Light of West China" Program (No.XAB2018A07), the Foundation of State Key Laboratory of China (No.SKLIPR2021)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 54>
 
Accession number:20214611148360
Title:Monolithic RGB Micro-Light-Emitting Diodes Fabricated with Quantum Dots Embedded inside Nanoporous GaN
Authors:Song, Jie (1); Kang, Jin-Ho (2); Han, Jung (2) 
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) Department of Electrical Engineering, Yale University, New Haven; Connecticut; 06520, United States 
Corresponding author:Song, Jie(songjie@opt.ac.cn)
Source title:ACS Applied Electronic Materials
Abbreviated source title:ACS Appl.  Electron.  Mater.
Volume:3
Issue:11
Issue date:November 23, 2021
Publication year:2021
Pages:4877-4881
Language:English
E-ISSN:26376113
Document type:Journal article (JA)
Publisher:American Chemical Society
Abstract:<div data-language="eng" data-ev-field="abstract">We report the use of colloidal quantum dots (QDs) embedded in nanoporous (NP) gallium nitride (GaN) as a color converter to achieve different emission colors and fabricate micro-light-emitting diodes (micro-LEDs). The optical property of NP-GaN has been studied by analyzing the light transmittance propagating in NP-GaN. A strong light scattering effect can be induced by NP-GaN, resulting in a dramatically increased optical transmission path for blue light and high light absorption by QDs loaded inside NP-GaN. A 4 in. color converter has been achieved with a wavelength deviation of 1 nm across the entire wafer. Monolithic red, green, and blue micro-LEDs have been fabricated with a pixel size of around 35 &times; 35 &mu;m2.<br/></div> &copy;
Number of references:31
Main heading:Gallium nitride
Controlled terms:III-V semiconductors - Electroluminescence - Semiconductor quantum dots - Organic light emitting diodes (OLED) - Fabrication - Light scattering - Color - Light absorption - Light - Nanocrystals  - Light transmission
Uncontrolled terms:Blue light - Colloidal quantum dots - Emission color - Light transmittance - Lightemitting diode - Micro-light-emitting diode - Monolithics - Nano-porous - Scattering effects - Transmission paths
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 712.1  Semiconducting Materials - 714.2  Semiconductor Devices and Integrated Circuits - 741  Light, Optics and Optical Devices - 741.1  Light/Optics - 761  Nanotechnology - 933.1  Crystalline Solids
Numerical data indexing:Area 3.50E-11m2, Size 1.00E-09m, Size 1.016E-01m
DOI:10.1021/acsaelm.1c00700
Funding details:  
Funding text:We acknowledge the research support from Xi&rsquo;an SaiFuLeSi Semiconductor Technology Co., Ltd. We thank Prof. Hao-Chung Kuo of the Taiwan National Chiao Tung University for the inkjet printing of QDs.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 55>
 
Accession number:20215211395539
Title:CCD signal acquisition and optimal digital denoise technology
Authors:Li, Wencan (1, 2); Wen, Yan (1, 3); Wang, Dong (1); Yao, Dalei (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; (3) College of Automation, Northwestern Polytechnical University, Xi'an; 710068, China 
Corresponding authors:Li, Wencan(liwencan18@mails.ucas.ac.cn); Li, Wencan(liwencan18@mails.ucas.ac.cn)
Source title:High Technology Letters
Abbreviated source title:High Technol Letters
Volume:27
Issue:4
Issue date:December 2021
Publication year:2021
Pages:422-429
Language:English
ISSN:10066748
CODEN:HTLEFC
Document type:Journal article (JA)
Publisher:Inst. of Scientific and Technical Information of China
Abstract:<div data-language="eng" data-ev-field="abstract">To reduce the charge-coupled device(CCD) readout noise and improve the detection ability under low illumination and dim targets, a new low-noise CCD signal processing technology-CCD digital denoise-is gradually being employed in aerospace detection and other fields. In this study, the main readout noise of CCD detectors and its characteristics are analyzed. A CCD digital denoise system and an experimental platform are designed as well as established by using a PCIe data acquisition card. According to the characteristics of readout noise, some digital filters are analyzed and designed based on distributed kernel coefficient, and the optimal kernel coefficients are obtained through iteration. Then, CCD signal and filter model are established, and the optimal filter is designed to apply to the digital denoise system. Finally, according to the image data obtained from the system, the performance of the digital denoise system and digital filtering algorithm is evaluated and compared. At 500kHz and 1MHz CCD readout rates, the denoising performance of the optimal filter designed in the experiment is 16%-32% higher than that of the digital filter with kernel distribution coefficient, and 50%-60% higher than that of the traditional correlated double sampling technology.<br/></div> Copyright &copy; by HIGH TECHNOLOGY LETTERS PRESS.
Number of references:22
Main heading:Charge coupled devices
Controlled terms:Digital filters - Sampling - Iterative methods - Data acquisition
Uncontrolled terms:Charge-coupled device - Correlated double sampling - De-Noise - Digital correlated double sampling - Lower noise - Optimal filter - Performance - Readout noise - Reset noise - Signal acquisitions
Classification code:703.2  Electric Filters - 714.2  Semiconductor Devices and Integrated Circuits - 723.2  Data Processing and Image Processing - 921.6  Numerical Methods
Numerical data indexing:Frequency 1.00E+06Hz, Frequency 5.00E+05Hz, Percentage 1.60E+01% to 3.20E+01%, Percentage 5.00E+01% to 6.00E+01%
DOI:10.3772/j.issn.1006-6748.2021.04.011
Funding details:  Number: 6132570201, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:Supported by the National Program on Key Basic Research Project (973 Program)(No. 6132570201). To whom correspondence should be addressed. E-mail: liwencan18@ mails. ucas. ac. cn Received on Jan. 29, 2021
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 56>
 
Accession number:20215111331131
Title:Ultrafast photonics applications of zirconium carbide as a novel mode-locker for fiber lasers
Authors:Liu, Sicong (1); Lv, Ruidong (1, 2); Wang, Jiang (1, 3); Wang, Yishan (4); Wang, Hushan (4); Zhang, Han (5); Wang, Yonggang (1) 
Author affiliation:(1) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (2) School of Electronic Science and Engineering, Xi'An Jiaotong University, Xi'an; 710049, China; (3) School of Artificial Intelligence, Optics and ElectroNics, Northwestern Polytechnical University, Xi'an; 710072, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (5) College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen; 518060, China 
Corresponding author:Wang, Yonggang
Source title:Journal of Materials Chemistry C
Abbreviated source title:J. Mater. Chem. C
Volume:9
Issue:47
Issue date:December 21, 2021
Publication year:2021
Pages:16985-16990
Language:English
ISSN:20507534
E-ISSN:20507526
CODEN:JMCCCX
Document type:Journal article (JA)
Publisher:Royal Society of Chemistry
Abstract:<div data-language="eng" data-ev-field="abstract">Zirconium carbide (ZrC), as a novel member of the MXene family, has outstanding physical and chemical properties; however, the applications of ZrC in ultrafast photonics are still rare. Herein, a ZrC film was deposited by magnetron sputtering deposition (MSD) technology onto a D-shaped fiber and the nonlinear optical properties of the ZrC film were demonstrated. MSD technology is an advanced preparation method applicable to various materials. The saturation intensity and the modulation depth of the ZrC film were measured to be 197.6 MW cm-2 and 11.9%, respectively. After inserting the ZrC SA into an erbium-doped fiber laser (EDFL) cavity, a passive mode-locked EDFL pulse was formed. In mode-locked operation, conventional solitons with an ultrashort pulse duration of 395 fs and an output power of 49.86 mW were achieved in the communication band. The corresponding central wavelength of the output spectrum was 1562.19 nm with a 7.73 nm spectral width. This work pioneers the application of a ZrC-based device as a mode-locker to achieve ultrashort pulses for the first time and expands the application of the ZrC material. The experimental results open new opportunities for the use of ZrC in mode-locked lasers and photonics applications. This journal is<br/></div> &copy; The Royal Society of Chemistry.
Number of references:57
Main heading:Fiber lasers
Controlled terms:Ultrashort pulses - Zirconium compounds - Mode-locked fiber lasers - Optical properties - Nonlinear optics - Passive mode locking - Carbides
Uncontrolled terms:D-shaped fiber - Deposition technology - Erbium-doped fiber lasers - Magnetron-sputtering deposition - Photonic application - Physical and chemical properties - Ultra-fast photonics - Ultrashort-pulse - Zirconium carbide - Zirconium carbide films
Classification code:741.1  Light/Optics - 741.1.1  Nonlinear Optics - 744.1  Lasers, General - 744.4  Solid State Lasers - 804.2  Inorganic Compounds - 812.1  Ceramics
Numerical data indexing:Percentage 1.19E+01%, Percentage 2.00E+00%, Power 1.976E+08W, Power 4.986E-02W, Size 1.56219E-06m, Size 7.73E-09m, Time 3.95E-13s
DOI:10.1039/d1tc04073a
Funding details:  Number: TD2020031Y, Acronym: -, Sponsor: Shaanxi Normal University;Number: 2019TS117, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:The Postgraduate Innovation Team project of Shaanxi Normal University (TD2020031Y) and the Fundamental Research Funds For the Central Universities (2019TS117).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 57>
 
Accession number:20210409817755
Title:High-side mode suppression ratio with a high-stability external-cavity diode laser array at 976 nm in a wide temperature and current range
Authors:Liu, Bin (1, 2, 3); Liu, Hui (1); Zhu, Pengfei (3); Liu, Xingsheng (3) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi; Xi'an; 710119, China; (2) Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Focuslight Technologies Inc, Shaanxi; Xi'an; 710077, China 
Corresponding author:Liu, Hui(huiliu@xpu.edu.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:486
Issue date:May 1, 2021
Publication year:2021
Article number:126792
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:A high-side mode suppression ratio (SMSR) and high-stability external-cavity diode laser array employing optical feedback from a volume Bragg grating (VBG) with 15% diffraction efficiency at 976 nm was investigated. Based on the transfer matrix method and on the multimode rate equation, the theoretical model for an external-cavity diode laser at 976 nm was built for different temperature and current values. Both the simulated and the experimental results show that the temperature and the current range of such laser array with a front end reflectivity (R<inf>f</inf>) of 0.5% are 10 &deg;C and 15 A broader than that for an external cavity with R<inf>f</inf> = 2%. As a result, the external-cavity diode laser array at 976 nm with a R<inf>f</inf> value of 0.5% exhibits a high stability in the temperature range of 15&ndash;35 &deg;C and from 15 to 50 A. Moreover, it shows an SMSR higher than 30 dB and a power larger than 33.9 W at 50A.<br/> &copy; 2021 Elsevier B.V.
Number of references:21
Main heading:Semiconductor lasers
Controlled terms:Transfer matrix method - Diodes
Uncontrolled terms:Current range - Current values - External cavity - External-cavity diode laser - Multimode rate equations - Temperature range - Theoretical modeling - Volume bragg grating (VBG)
Classification code:744.4.1  Semiconductor Lasers - 921  Mathematics
Numerical data indexing:Decibel 3.00e+01dB, Electric_Current 1.50e+01A, Electric_Current 1.50e+01A to 5.00e+01A, Electric_Current 5.00e+01A, Percentage 1.50e+01%, Percentage 2.00e+00%, Percentage 5.00e-01%, Power 3.39e+01W, Size 9.76e-07m, Temperature 2.83e+02K
DOI:10.1016/j.optcom.2021.126792
Funding details:  Number: 2018YFB1107302, Acronym: -, Sponsor: National Key Research and Development Program of China;Number: 2018YFB1107303, Acronym: -, Sponsor: National Key Research and Development Program of China;
Funding text:We wish to acknowledge the support of National Key R&D Program of China (2018YFB1107302 and 2018YFB1107303).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 58>
 
Accession number:20214911292651
Title:A synchroscan streak tube with high deflection sensitivity    (Open Access)
Title of translation:&#19968;&#31181;&#39640;&#20559;&#36716;&#28789;&#25935;&#24230;&#21516;&#27493;&#25195;&#25551;&#26465;&#32441;&#31649;    (Open Access)
Authors:Liu, Xue-Ling (1, 2); Tian, Jin-Shou (1, 4); Tian, Li-Ping (3); Chen, Ping (1); Zhang, Min-Rui (1); Xue, Yan-Hua (1); Li, Ya-Hui (1, 2); Fang, Yu-Man (1, 2); Xu, Xiang-Yan (1); Liu, Bai-Yu (1); Gou, Yong-Sheng (1) 
Author affiliation:(1) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, 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 Network and Communication Engineering, Jinling Institute of Technology, Nanjing; 211169, China; (4) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding authors:Tian, Jin-Shou(tianjs@opt.ac.cn); Tian, Jin-Shou(tianjs@opt.ac.cn)
Source title:Wuli Xuebao/Acta Physica Sinica
Abbreviated source title:Wuli Xuebao
Volume:70
Issue:21
Issue date:November 2021
Publication year:2021
Article number:218502
Language:Chinese
ISSN:10003290
CODEN:WLHPAR
Document type:Journal article (JA)
Publisher:Institute of Physics, Chinese Academy of Sciences
Abstract:<div data-language="eng" data-ev-field="abstract">A synchroscan streak tube with high spatiotemporal resolution and high deflection sensitivity is proposed, which contains several innovation designs. Some measures are taken to improve the imaging performances of the streak tube. Firstly, in order to obtain a high deflection sensitivity, the difference in voltage between the photocathode and anode and the length of the equipotential region of the streak tube are reduced as much as possible. Secondly, by introducing a hyperfine grid behind the cathode, reasonably designing the voltages applied to the six-electrode electrostatic focusing system, and moving the electron beam crossing point to the entrance of the deflection plates, the temporal dispersion and the temporal distortion of the streak tube are reduced, and the spatiotemporal resolution of the streak tube is improved. Besides, the streak tube is technically analyzed by tracking the temporal and spatial distribution of electrons under an operating voltage of 7000 V with the aid of computer simulation technology (CST) software. The results show that the deflection sensitivity is 125 mm/kV, the physical temporal resolution is better than 1.83 ps @MTF = 10%, and the static spatial resolution on the photocathode is better than 38 lp/mm @MTF = 10% over the effective photocathode area with a size of 10 mm &times; 4 mm. By applying a synchronous scanning voltage with a repetition frequency of 250 MHz to the deflection electrode, the results show that the dynamic spatial resolution of the streak tube is better than 16 lp/mm, the limit of the dynamic temporal resolution is 1.39 ps, and two rectangular electron pulses with a size of 10 mm &times; 20 &mu;m and an interval of 2.3 ps emitted from the photocathode can be well resolved by the streak tube. In addition, the experimental measurements are conducted with a streak tube developed in our laboratory. The results demonstrate that the photocathode of the streak tube can work in the entire visible light region, and the response in the short wavelength region is significantly better than that in the long wavelength region. The static spatial resolution of this streak tube is 40 lp/mm in the center of the photocathode. The temporal resolution of this streak tube is 5.55 ps measured under a synchronous scanning voltage with a repetition frequency of 75 MHz.<br/></div> &copy; 2021 Chinese Physical Society.
Number of references:30
Main heading:Streak cameras
Controlled terms:Tubes (components) - Computer software - Image resolution - Photocathodes - Deflection (structures) - Light
Uncontrolled terms:Deflection sensitivities - Low light - Spatial resolution - Spatio-temporal resolution - Streak tubes - Synchronous scanning - Synchroscan streak tube - Temporal resolution - Ultra-fast - Ultra-fast low light diagnose
Classification code:408.2  Structural Members and Shapes - 619.1  Pipe, Piping and Pipelines - 714.1  Electron Tubes - 723  Computer Software, Data Handling and Applications - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment
Numerical data indexing:Frequency 2.50E+08Hz, Frequency 7.50E+07Hz, Percentage 1.00E+01%, Size 1.00E-02m, Size 1.25E-01m, Size 2.00E-05m, Size 4.00E-03m, Time 1.39E-12s, Time 1.83E-12s, Time 2.30E-12s, Time 5.55E-12s, Voltage 7.00E+03V
DOI:10.7498/aps.70.20210814
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 59>
 
Accession number:20215111370190
Title:Physical characteristics and spillage detection Using multifeature fusion    (Open Access)
Authors:Liu, Caiyu (1); Zhou, Zuofeng (2); Wu, Qingquan (3) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shanxi, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100039, China; (3) Xi'an Institute of Optics and Precision Mechanics, Cas Industrial Development Co. Ltd., Xian; 710018, China 
Corresponding author:Liu, Caiyu(liucaiyu20@mails.ucas.ac.cn)
Source title:Journal of Physics: Conference Series
Abbreviated source title:J. Phys. Conf. Ser.
Volume:2083
Part number:2 of 4
Issue:2
Issue title:2021 2nd International Conference on Applied Physics and Computing, ICAPC 2021 - 1. Applied Physics
Issue date:December 2, 2021
Publication year:2021
Article number:022041
Language:English
ISSN:17426588
E-ISSN:17426596
Document type:Conference article (CA)
Conference name:2021 2nd International Conference on Applied Physics and Computing, ICAPC 2021
Conference date:September 8, 2021  -  September 10, 2021
Conference location:Ottawa, ON, Canada
Conference code:175431
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">As an important part of road maintenance, the detection of road sprinkles has attracted extensive attention from scholars. However, after years of research, there are still some problems in the detection of road sprinkles. First of all, the detection accuracy of traditional detection algorithm is deficient. Second, deep learning approaches have great limitations for there are various kinds of sprinkles which makes it difficult to build a data set. In view of the above problems, this paper proposes a road sprinkling detection method based on multi-feature fusion. The characteristics of color, gradient, luminance and neighborhood information were considered in our method. Compared with other traditional methods, our method has higher detection accuracy. In addition, compared with deep learning-based methods, our approach doesn't involve creating a complex data set and reduces costs. The main contributions of this paper are as follows: I. For the first time, the density clustering algorithm is combined with the detection of sprinkles, which provides a new idea for this field. II. The use of multi-feature fusion improves the accuracy and robustness of the traditional method which makes the algorithm usable in many real-world scenarios.<br/></div> &copy; 2021 Institute of Physics Publishing. All rights reserved.
Number of references:14
Main heading:Clustering algorithms
Controlled terms:Roads and streets - Deep learning - Feature extraction
Uncontrolled terms:Data set - Density clustering - Detection accuracy - Detection algorithm - Detection methods - Learning approach - Multi-feature fusion - Physical characteristics - Road maintenance - Spillage detection
Classification code:406.2  Roads and Streets - 461.4  Ergonomics and Human Factors Engineering - 903.1  Information Sources and Analysis
DOI:10.1088/1742-6596/2083/2/022041
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 60>
 
Accession number:20211710255916
Title:Terahertz signatures and quantitative analysis of glucose anhydrate and monohydrate mixture
Authors:Yan, Hui (1, 2, 3); Fan, Wenhui (1, 3, 4); Chen, Xu (1); Liu, Lutao (1, 3); Wang, Hanqi (1, 3); Jiang, Xiaoqiang (1, 3) 
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) College of Science, Zhongyuan University of Technology, Zhengzhou 450007, China; Zhengzhou Key Laboratory of Low-dimensional Quantum Materials and Devices; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Fan, Wenhui(fanwh@opt.ac.cn)
Source title:Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Abbreviated source title:Spectrochim. Acta Part A Mol. Biomol. Spectrosc.
Volume:258
Issue date:September 5, 2021
Publication year:2021
Article number:119825
Language:English
ISSN:13861425
CODEN:SAMCAS
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">Glucose, as the main energy carrier and significant source of nutrition, generally comes in two available forms of anhydrate and monohydrate in commercial production. Considering their respective application occasions, proper identification of glucose in single composition or binary-mixture and quantification of the mixture are crucial in industry monitoring to guarantee merchandise quality. Simultaneously, public confusions of glucose are rather ubiquitous partly due to anhydrate and monohydrate with identical white crystalline appearance. In this paper, utilizing the molecular fingerprints of terahertz (THz) technology that are corresponding to structural characteristics of anhydrous and hydrated form, THz signatures of glucose anhydrate, monohydrate and their mixture, as well as THz spectral transformation from monohydrate to anhydrate with the dehydrating process are systematically studied. Some visible peaks of monohydrate were noted at 1.82 and 1.99 THz signifying the presence of hydrated structure. However, with the dehydrating process, the peaks related to the hydrated structure are not very apparent when the peaks at 1.44 and 2.08 THz appear due to changes in the molecular structure of anhydrate, which provide clear indication for hydrogen-bond network reconstruction at the micro level. Furthermore, characteristic peaks at 1.44 and 1.82 THz can be specified as the main quantitative indicators for quantitative detection. The linear relationships between the amplitudes of characteristic peaks and the percentage compositions of anhydrate and monohydrate are revealed. Three commercially available brands of edible glucose powder A, B, C were effectively identified by THz signatures. While powder C was recognized as binary-mixture and the proportion of anhydrate and monohydrate was further quantified. THz spectroscopy technology has advantages of direct recognition, simple quantitative model based on THz absorption peaks, and no need for complicated chemical treatment. It may be potentially shed light on industrial monitoring of glucose production and other related mixture in the future.<br/></div> &copy; 2021 Elsevier B.V.
Number of references:47
Main heading:Chemical analysis
Controlled terms:Binary mixtures - Glucose - Hydration - Hydrogen bonds - Terahertz spectroscopy - Dehydration
Uncontrolled terms:Anhydrate and monohydrate - Anhydrates - Characteristic peaks - Commercial productions - Energy carriers - Molecular fingerprint - Structural characteristics - Tera Hertz - Terahertz signature - Terahertz technology
Classification code:801.4  Physical Chemistry - 802.2  Chemical Reactions - 804  Chemical Products Generally - 804.1  Organic Compounds - 931.1  Mechanics
Numerical data indexing:Frequency 1.44E+12Hz, Frequency 1.82E+12Hz, Frequency 1.99E+12Hz, Frequency 2.08E+12Hz
DOI:10.1016/j.saa.2021.119825
Funding details:  Number: LSIT201913N, Acronym: -, Sponsor: -;Number: 61675230,61905276, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the National Natural Science Foundation of China ( 61675230 , 61905276 ); Open Research Fund of Key Laboratory of Spectral Imaging Technology, Chinese Academy of Sciences ( LSIT201913N ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 61>
 
Accession number:20210609889094
Title:Dark matter-wave gap solitons in dense ultracold atoms trapped by a one-dimensional optical lattice
Authors:Li, Jiawei (1, 2, 3); Zeng, Jianhua (1, 3) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (2) Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, Xi'An Jiaotong University, Xi'an; 710049, China; (3) School of Optoelectronics, University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Zeng, Jianhua(zengjh@opt.ac.cn)
Source title:Physical Review A
Abbreviated source title:Phys. Rev. A
Volume:103
Issue:1
Issue date:January 2021
Publication year:2021
Article number:A17
Language:English
ISSN:24699926
E-ISSN:24699934
Document type:Journal article (JA)
Publisher:American Physical Society
Abstract:Optical lattices have been used as a versatile toolbox to control Bose-Einstein condensates (BECs) in recent years, and a wealth of emergent nonlinear phenomena have been found, including bright gap solitons and dark ones, among which the former has been realized in experiments. The latter, however, has only theoretical results and its fundamental properties are still not well understood. Here we theoretically and numerically explore an open issue of creating stable matter-wave dark gap solitons in a one-dimensional optical lattice, onto which the BECs with self-defocusing quintic nonlinearity are loaded. Using linear-stability analysis and direct simulations, the formation, structures, and properties of dark gap solitons in quintic nonlinearity have been compared to those upheld by cubic Kerr nonlinearity. In particular, we uncover that the dark gap solitons and soliton clusters are robustly stable in the first finite band gap of the underlying linear spectrum, and are hard to be stabilized in the second gap. The predicted dark gap solitons are observable in current experiments on dense ultracold atoms, using an optical lattice technique, and in the optics domain for nonlinear light propagation in periodic optical media with quintic nonlinearity.<br/> &copy; 2021 American Physical Society.
Number of references:74
Main heading:Optical lattices
Controlled terms:Nonlinear optics - Bose-Einstein condensation - Linear stability analysis - Statistical mechanics - Energy gap - Solitons - Optical materials - Crystal lattices
Uncontrolled terms:Bose-Einstein condensates - Direct simulation - Fundamental properties - Kerr nonlinearity - Non-linear phenomena - One dimensional optical lattice - Quintic nonlinearity - Soliton clusters
Classification code:741.1.1  Nonlinear Optics - 741.3  Optical Devices and Systems - 744.8  Laser Beam Interactions - 921  Mathematics - 922.2  Mathematical Statistics - 931.1  Mechanics - 931.2  Physical Properties of Gases, Liquids and Solids - 931.3  Atomic and Molecular Physics - 933.1.1  Crystal Lattice
DOI:10.1103/PhysRevA.103.013320
Funding details:  Number: S19-020-III, Acronym: -, Sponsor: -;Number: 12074423,61690222,61690224, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: J20-021-III, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2019JCW-03, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:This work was supported by the National Natural Science Foundation of China (NSFC) (Grants No. 61690224, No. 61690222, No. 12074423), the Major Science and Technology Infrastructure Pre-research Program of the CAS (Grant No. J20-021-III), the Natural Science Basic Research Program of Shaanxi (Grant No. 2019JCW-03), and the Key Deployment Research Program of XIOPM (Grant No. S19-020-III).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 62>
 
Accession number:20213410811243
Title:Lensless multimode fiber imaging based on wavefront shaping
Authors:Zhang, Zaikun (1, 2, 3, 4); Kong, Depeng (3); Geng, Yi (1, 2, 3); Chen, Hui (1, 2, 3); Wang, Ruiduo (1, 2, 3); Da, Zhengshang (4); He, Zhengquan (3) 
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) Laboratory of Information Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (4) The Advanced Optical Instrument Research Department, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:He, Zhengquan(zhqhe@opt.ac.cn)
Source title:Applied Physics Express
Abbreviated source title:Appl. Phys. Express
Volume:14
Issue:9
Issue date:September 2021
Publication year:2021
Article number:092002
Language:English
ISSN:18820778
E-ISSN:18820786
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">In this letter, we proposed a compact multimode fiber (MMF)-based laser scanning endoscope (LSE) using wavefront shaping with a liquid crystal spatial light modulator. Experimentally, we demonstrated the lensless imaging capability of the LSE using a negative USAF-1951 test target placed near the distal MMF facet, obtaining ~7000-pixel images with micro-level spatial resolution and high contrast across a 105 &mu;m field of view. This study proves the feasibility of a single MMF imaging without mechanical scanning, and also paves the way for ultra-thin micro-endoscopic imaging.<br/></div> &copy; 2021 The Japan Society of Applied Physics.
Number of references:30
Main heading:Multimode fibers
Controlled terms:Light modulators - Wavefronts - Liquid crystals - Endoscopy
Uncontrolled terms:Endoscopic imaging - Laser scanning - Lens-less imaging - Liquid crystal spatial light modulators - Mechanical scanning - Multi-mode fibers (MMF) - Spatial resolution - Wave front shaping
Classification code:461.6  Medicine and Pharmacology - 741.1.2  Fiber Optics
Numerical data indexing:Size 1.05e-04m
DOI:10.35848/1882-0786/ac19d4
Funding details:  Number: 61535015, Acronym: NNSFC, Sponsor: National Natural Science Foundation of China;
Funding text:National Natural Science Foundation of China (61535015).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 63>
 
Accession number:20212010360071
Title:Performance Optimization and Experimental Research of Continuous Wave Coherent Wind Lidar
Title of translation:&#36830;&#32493;&#27169;&#24335;&#30456;&#24178;&#27979;&#39118;&#28608;&#20809;&#38647;&#36798;&#24615;&#33021;&#20248;&#21270;&#20998;&#26512;&#21450;&#23454;&#39564;&#30740;&#31350;
Authors:Yang, Wuhao (1, 2); Zhang, Pu (1); Yang, Xinfeng (3); Chen, Qimin (1, 4); Zhao, Wei (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) Songshan Lake Materials Laboratory, Dongguan; 523008, China; (4) Shaanxi Normal University, Xi'an; 710119, China 
Corresponding author:Zhang, Pu(zhangpu@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:4
Issue date:April 25, 2021
Publication year:2021
Article number:0401004
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Based on the requirement of wind velocity measurement, an all-fiber doppler coherent wind lidar system is built with continuous wave laser source at band 1 550 nm. It is analyzed theoretically for the Carrier-to-noise ratio function of the continuous wave coherent lidar and the weighing function of the wind velocity at different focusing distance on the basis of the lidar equation. A vari-focusing optical antenna with the focusing distance range from 5 m to 200 m is designed and fabricated according to the requirement of wind detection. The optical beam expanding module adopts the Galilean refractive structure with the beam expanding ratio as 23 and the optical quality is close to the diffraction limit. The calibration test is executed by using a rotating motor disk. The rotation speed range of the disk is from -3 000 r/min to +3 000 r/min. The diameter of the disk is 26 cm. While the doppler frequency shift of the line of sight velocity is positive and negative, the correlation coefficients between the velocity measurement data of the lidar system and the theoretical calculation result are 0.998 and 0.993. At the same time the standard deviations of velocity are 0.151 m/s and 0.229 m/s, respectively. The wind lidar is then used to measure the atmospheric wind speed. It works correctly to apply the wind lidar to measure the atmospheric wind velocity.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:17
Main heading:Continuous wave lasers
Controlled terms:Antennas - Velocity measurement - Optical radar - Rotating disks - Rotation rate - Diffraction - Doppler effect - Velocity - Focusing - Wind speed
Uncontrolled terms:Carrier to noise ratio - Correlation coefficient - Diffraction limits - Doppler frequency shift - Experimental research - Performance optimizations - Theoretical calculations - Wind velocity measurement
Classification code:601.2  Machine Components - 615.8  Wind Power (Before 1993, use code 611 ) - 716.2  Radar Systems and Equipment - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 931.1  Mechanics - 943.3  Special Purpose Instruments
Numerical data indexing:Size 1.55e-06m, Size 2.60e-01m, Size 5.00e+00m to 2.00e+02m, Velocity 1.51e-01m/s, Velocity 2.29e-01m/s
DOI:10.3788/gzxb20215004.0401004
Funding details:  Number: Y929471233, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:Western Young Scholars Foundation of the Chinese Academy of Sciences (No. Y929471233).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 64>
 
Accession number:20214010971052
Title:Broadband hybrid plasmonic graphene modulator operating at mid-Infrared wavelength
Authors:Ban, Xiaoqiang (1, 2); Zhong, Ming (3); Little, Brent E. (1, 2) 
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 Mathematics and Statistics, Shaanxi Normal University, Xi'an; 710119, China 
Corresponding author:Ban, Xiaoqiang(banxiaoqiangcas@163.com)
Source title:Optik
Abbreviated source title:Optik
Volume:247
Issue date:December 2021
Publication year:2021
Article number:168036
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:<div data-language="eng" data-ev-field="abstract">A broadband modulator with hybrid plasmonic graphene waveguide is proposed. The waveguide is very convenient to transfer graphene and improve fabrication tolerance. We use tip enhancement effect of graphene-based hybrid wedge SPPs mode to enhance light absorption modulation. The interaction between the hybrid plasmonic graphene structure and the optical field is numerically investigated. We get the geometrical optimization value by sweeping the parameter with FDTD method. The result demonstrates that modulation depth of our proposed modulator exceeds 3 dB when wavelength changes from 3.3 to 3.7 &micro;m. Moreover, compared with previous papers, our proposed modulator can obtain broader modulation bandwidth (156.49 GHz) and need lower power consumption (477 fJ/bit), which has a better performance in potential applications such as optoelectronic countermeasure systems and optical signal processing.<br/></div> &copy; 2021 Elsevier GmbH
Number of references:44
Main heading:Graphene
Controlled terms:Finite difference time domain method - Modulation - Light modulators - Infrared devices - Optical signal processing - Light absorption - Waveguides - Plasmonics
Uncontrolled terms:Absorption modulation - Broadband - Broadband modulators - Enhancement effects - Fabrication tolerances - Hybrid plasmonic modulator - Mid-infrared wavelengths - Midinfrared - Optical field - Plasmonics
Classification code:714.3  Waveguides - 741.1  Light/Optics - 761  Nanotechnology - 804  Chemical Products Generally - 921  Mathematics - 932.3  Plasma Physics
Numerical data indexing:Decibel 3.00E+00dB, Frequency 1.5649E+11Hz
DOI:10.1016/j.ijleo.2021.168036
Funding details:  Number: 61605106, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This research has been sponsored by the National Natural Science Foundation of China (Grant No. 61605106 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 65>
 
Accession number:20210509869988
Title:Flower-Shaped Optical Vortex Array
Authors:Fan, Haihao (1, 2); Zhang, Hao (1); Cai, Chenyuan (3); Tang, Miaomiao (1); Li, Hehe (1); Tang, Jie (2); Li, Xinzhong (1, 2) 
Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) Luoyang First Senior High School, Luoyang; 471023, China 
Corresponding authors:Li, Xinzhong(xzli@haust.edu.cn); Li, Xinzhong(xzli@haust.edu.cn)
Source title:Annalen der Physik
Abbreviated source title:Ann Phys Leipzig
Volume:533
Issue:4
Issue date:April 2021
Publication year:2021
Article number:2000575
Language:English
ISSN:00033804
E-ISSN:15213889
CODEN:ANPYA2
Document type:Journal article (JA)
Publisher:John Wiley and Sons Inc
Abstract:<div data-language="eng" data-ev-field="abstract">Herein, the generation of an optical vortex array dubbed the flower-shaped optical vortex array (FOVA) is proposed and experimentally demonstrated using a single optical path interference method. FOVA is generated by the superposition of even and odd Ince&ndash;Gaussian (IG) beams, which have the same degree m and different order p. The number of optical vortices (OVs) in the FOVA is determined based on the values of order p and degree m of the even and odd IG beams. Furthermore, the positive sign of the OVs in the array can be transformed to negative by adding a specific initial phase difference. The OVs vanish and then recover as the initial phase difference increases from 0 to 2&pi;. Moreover, the gradient force and energy flow distribution of the FOVA are studied. The OVA with flower-shaped structure generated herein has potential significance in applications, such as microparticle manipulation and optical measurements.<br/></div> &copy; 2021 Wiley-VCH GmbH
Number of references:52
Main heading:Physical optics
Controlled terms:Optical data processing - Gaussian beams - Vortex flow
Uncontrolled terms:Flower-shaped - Gradient force - Interference methods - Microparticle manipulations - Optical measurement - Optical path - Optical vortices - Phase difference
Classification code:631.1  Fluid Flow, General - 711  Electromagnetic Waves - 723.2  Data Processing and Image Processing - 741.1  Light/Optics
DOI:10.1002/andp.202000575
Funding details:  Number: 21zx002, Acronym: -, Sponsor: -;Number: 11704098,11974101,11974102, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: SKLST201901, Acronym: SKLTOP, Sponsor: State Key Laboratory of Transient Optics and Photonics;
Funding text:H.F. and H.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (11974102, 11704098, and 11974101), State Key Laboratory of Transient Optics and Photonics (SKLST201901), and Key Scientific Research Projects of Institutions of Higher Learning of Henan Province Education Department (No. 21zx002).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 66>
 
Accession number:20213410810256
Title:Stray Light Suppression in Sweep Mirror Field-Widened Space-Borne Fourier Transform Imaging Spectrometer
Title of translation:&#20391;&#25670;&#25193;&#35270;&#22330;&#22411;&#26143;&#36733;&#24178;&#28041;&#20809;&#35889;&#25104;&#20687;&#20202;&#26434;&#25955;&#20809;&#25233;&#21046;&#30740;&#31350;
Authors:Zhang, Zhinan (1, 2); Li, Libo (1); Zou, Chunbo (1); Hao, Xiongbo (1); Sun, Jian (1, 2); Liu, Xuebin (1); Wang, Pengchong (1); Liu, Jie (1, 2) 
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology, Xian's 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:Li, Libo(lilibo@opt.ac.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:41
Issue:10
Issue date:May 25, 2021
Publication year:2021
Article number:1029001
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">The field widening of a sweep mirror field-widened Fourier transform imaging spectrometer is achieved by adding a sweep mirror before its optical system. However, the addition of the sweep mirror causes the cross distribution of rays from different fields and different channels, which presents a difficulty in the suppression of stray light, and thus the traditional stray light suppression design is no longer valid. To solve this problem, a new design of stray light suppression is proposed. Based on the stray light suppression design, the point source transmittance (PST) stimulation and analysis of the visible and near-infrared optical system and the shortwave infrared optical system is presented for the sweep mirror at different field of view locations of 0&deg;, 15&deg;, and -15&deg;. The analysis results show that as for all sweep mirror locations, the PST along the spatial direction and spectral direction at 0.5&deg; off-field angle can be reduced to 10<sup>-3</sup>. Based on the observation mode, the signal source and stray light source of the on-orbit imaging spectrometer are analyzed. In addition, based on the PST stimulation results, the stray light irradiance at the focal plane is studied and the signal-to-stray ratio is calculated. It shows that the signal-to-stray ratio of the visible and near-infrared optical system is 0.1% and that of the shortwave infrared optical system is 0.6%. The results indicate that the proposed stray light suppression method is effective and can meet the requirement of the space-borne imaging spectrometer.<br/></div> &copy; 2021, Chinese Lasers Press. All right reserved.
Number of references:14
Main heading:Stray light
Controlled terms:Infrared devices - Mirrors - Light sources - Optical systems - Spectrometers
Uncontrolled terms:Fourier transform imaging spectrometers - Imaging spectrometers - Light irradiances - Short wave infrared - Spatial direction - Spectral directions - Stray light suppression - Visible and near infrared
Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems
Numerical data indexing:Percentage 1.00e-01%, Percentage 6.00e-01%
DOI:10.3788/AOS202141.1029001
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 67>
 
Accession number:20210509855656
Title:Tunable all-optical AND logic gates via four-wave mixing based on graphene-on-silicon slot microring resonators
Authors:Wu, Wei (1, 2); Sun, Qibing (1, 3); Wang, Guoxi (1, 2); Zhang, Lingxuan (1, 3); Zhao, Wei (1, 2) 
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) School of Future Technology, University of Chinese Academy of Sciences, Beijing; 100049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Sun, Qibing(qbsun@opt.ac.cn)
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:138
Issue date:June 2021
Publication year:2021
Article number:106926
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:We propose a novel graphene-on-silicon organic hybrid slot microring resonator (GSHMIR) for tunable all-optical logic gates, which could offer broadband ultra-flattened dispersion with multiple zero-dispersion wavelengths (ZDWs) and high nonlinearity coefficient of 1.67 &times; 10<sup>4</sup> W<sup>&minus;1</sup>m<sup>&minus;1</sup>. Further investigations on temporal evolution dynamics for all-optical logic function suggest that the third-order dispersion will induce the temporal drift and tail oscillation of output pulses. The tunable all-optical AND logic function over the wavelength range from 1536 nm to 1569 nm could be obtained for 40 Gb/s signals with the conversion efficiency as high as &minus;6.4 dB. These results are essential for all-optical wavelength division multiplexer (WDM) technology of future integrated optoelectronic systems, as well as providing a novel architecture for on-chip optical communications.<br/> &copy; 2021 Elsevier Ltd
Number of references:42
Main heading:Four wave mixing
Controlled terms:Computer circuits - Graphene - Optical signal processing - Optoelectronic devices - Logic gates - Silicon - Optical communication - Dispersion (waves) - Integrated optics
Uncontrolled terms:All-optical logic gates - Flattened dispersion - High nonlinearity - Microring resonator - Novel architecture - Temporal evolution - Third order dispersion - Zero-dispersion wavelength
Classification code:549.3  Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 717.1  Optical Communication Systems - 721.2  Logic Elements - 721.3  Computer Circuits - 741.3  Optical Devices and Systems - 761  Nanotechnology - 804  Chemical Products Generally
Numerical data indexing:Bit_Rate 4.00e+10bit/s, Size 1.54e-06m to 1.57e-06m
DOI:10.1016/j.optlastec.2021.106926
Funding details:  Number: 61635013,61675231,61705257, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XDB24030600, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This research was supported by the National Natural Science Foundation of China (Grant No. 61705257, 61635013 and 61675231) and Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB24030600).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 68>
 
Accession number:20211710259064
Title:High Efficiency 1.9 Kw Single Diode Laser Bar Epitaxially Stacked with a Tunnel Junction    (Open Access)
Authors:Zhao, Yuliang (1, 2); Wang, Zhenfu (1); Demir, Abdullah (5); Yang, Guowen (1, 2); Ma, Shufang (3); Xu, Bingshe (3); Sun, Cheng (4); Li, Bo (4); Qiu, Bocang (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) Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an; 710021, China; (4) Lumcore Optoelectronics Tech. Company Ltd., Xi'an; 710071, China; (5) UNAM - Institute of Materials Science and Nanotechnology, Bilkent University, Ankara; 06800, Turkey 
Corresponding authors:Wang, Zhenfu(wzf2718@opt.ac.cn); Qiu, Bocang(qiubocang@opt.ac.cn)
Source title:IEEE Photonics Journal
Abbreviated source title:IEEE Photon. J.
Volume:13
Issue:3
Issue date:June 2021
Publication year:2021
Article number:9406342
Language:English
E-ISSN:19430655
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">We report on the development of a 940-nm diode laser bar based on epitaxially stacked active regions by employing a tunnel junction structure. The tunnel junction and the device parameters were systematically optimized to achieve high output and power conversion efficiency. A record quasi-continuous wave (QCW) peak power of 1.91 kW at 25 &deg;C was demonstrated from a 1-cm wide bar with a 2-mm cavity length at 1 kA drive current (200 &mu;s pulse width and 10 Hz repetition rate). Below the onset of the thermal rollover, the slope efficiency was as high as 2.23 W/A. The maximum power conversion efficiency of 61.1% at 25 &deg;C was measured at 300 A. Reducing the heatsink temperature to 15 &deg;C led to a marginal increase in the peak power to 1.95 kW.<br/></div> &copy; 2009-2012 IEEE.
Number of references:24
Main heading:Tunnel junctions
Controlled terms:Semiconductor lasers - Semiconductor junctions - Semiconductor diodes - Conversion efficiency - Pulse repetition rate
Uncontrolled terms:Device parameters - Diode laser bar - Junction structure - Power conversion efficiencies - Quasi-continuous waves - Repetition rate - Slope efficiencies - Thermal rollover
Classification code:525.5  Energy Conversion Issues - 714.2  Semiconductor Devices and Integrated Circuits - 744.1  Lasers, General - 744.4.1  Semiconductor Lasers
Numerical data indexing:Electric_Current 1.00e+03A, Electric_Current 3.00e+02A, Frequency 1.00e+01Hz, Percentage 6.11e+01%, Power 1.90e+03W, Power 1.91e+03W, Power 1.95e+03W, Size 1.00e-02m, Size 2.00e-03m, Size 9.40e-07m, Time 2.00e+02s
DOI:10.1109/JPHOT.2021.3073732
Funding details:  Number: 61504167, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2015JQ6263, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: Y855J61213, Acronym: XIOPM, Sponsor: Xi'an Institute of Optics and Precision Mechanics;
Funding text:Manuscript received January 28, 2021; revised March 29, 2021; accepted April 12, 2021. Date of publication April 16, 2021; date of current version May 18, 2021. This work was supported in part by Project of Xi&rsquo;an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences Y855J61213, in part by National Natural Science Foundation of China under Grant 61504167, and in part by the Natural Science Foundation of Shaanxi Province under Grant 2015JQ6263. Corresponding authors: Zhenfu Wang and Bocang Qiu (e-mail: wzf2718@opt.ac.cn; qiubocang@opt.ac.cn).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold, Green
 
<RECORD 69>
 
Accession number:20214811229521
Title:Analysis of a higher-energy structure in nanotip enhanced fields    (Open Access)
Authors:Gao, Xu-Zhen (1, 2, 3); Landsman, Alexandra S. (4); Wang, Hushan (1); Huang, Pei (1); Zhang, Yanpeng (2); Wang, Bo (1); Wang, Yishan (1); Cao, Huabao (1); Fu, Yuxi (1); Pi, Liang-Wen (1, 3) 
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) Key Laboratory for Physical Electronics and Devices, Ministry of Education, Shaanxi Key Lab of Information Photonic Technique, Xi'An JiaoTong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Department of Physics, The Ohio State University, Columbus; OH; 43210, United States 
Corresponding authors:Pi, Liang-Wen(lwpi@opt.ac.cn); Landsman, Alexandra S.(landsman.7@osu.edu)
Source title:New Journal of Physics
Abbreviated source title:New J. Phys.
Volume:23
Issue:11
Issue date:November 2021
Publication year:2021
Article number:113017
Language:English
ISSN:13672630
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">We investigate strong field ionization of an atomic gas in a plasmonically enhanced field resulting from the illumination of a nanometer-sized structure with ultrafast laser pulse. We use perturbation theory to derive an approximate solution for electron's motion following ionization. These analytical estimates are corroborated by the time-dependent Schr&ouml;dinger equation and classical trajectory Monte Carlo simulations. Notably, our approach can be used to obtain electron energy spectra without having to rely on numerical simulations. This allows for a deeper study of the dependence of electron energy spectrum on the properties of the near-field, suggesting electric field sensor applications. We derive an analytical expression for the location of the peak of the higher-energy structure (HES) as a function of laser parameters and near-field decay length.We find a particularly strong dependence of the energy peak on laser frequency, with lower frequencies causing a significant upward shift in the final electron energies. Combined with control of the width of the HES, which can be done by changing the size of the nanostructure, this points to the possibility of using nanotips as sources of ultrashort electron beams of tunable energy.<br/></div> &copy; 2021 The Author(s).
Number of references:46
Main heading:Electric fields
Controlled terms:Dissociation - Nanotips - Electron energy levels - Intelligent systems - Electrons - Monte Carlo methods - Ultrafast lasers - Ionization of gases - Spectroscopy - Perturbation techniques
Uncontrolled terms:Atomic gas - Direct ionization - Electron dynamics - Electron energy spectrum - High energy structures - Inhomogeneous fields - Near fields - Perturbation method - Strong field ionization - Ultrafast laser pulse
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 723.4  Artificial Intelligence - 744.1  Lasers, General - 761  Nanotechnology - 802.2  Chemical Reactions - 921  Mathematics - 922.2  Mathematical Statistics - 933  Solid State Physics
DOI:10.1088/1367-2630/ac320c
Funding details:  Number: S19-020-III, Acronym: -, Sponsor: -;Number: 61690222, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: J19-121-III,J20-021-III,S19-001, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2019JCW-03,2021ZY-JC-01, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:This research is supported in part by the Chinese Academy of Sciences (No. J19-121-III, No. S19-001), Major Science and Technology Infrastructure Pre-research Program of the CAS (No. J20-021-III), Key Deployment Research Program of XIOPM (No. S19-020-III), Attosecond Science and Technology Innovation Team of Shaanxi, Natural Science Basic Research Program of Shaanxi (No. 2019JCW-03, No. 2021ZY-JC-01), National Natural Science Foundation of China (No. 61690222).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 70>
 
Accession number:20211510213134
Title:2.86 &mu;m emission and fluorescence enhancement through controlled precipitation of ZnTe nanocrystals in DyF<inf>3</inf> doped multicomponent tellurite oxyfluoride glass
Authors:Wan, Rui (1, 2); Wang, Pengfei (1, 2); Li, Shengwu (1, 2); Ma, Yuan (1, 2) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; Shaanxi; 710119, China; (2) Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Wang, Pengfei(pfwang@opt.ac.cn)
Source title:Journal of Non-Crystalline Solids
Abbreviated source title:J Non Cryst Solids
Volume:564
Issue date:July 15, 2021
Publication year:2021
Article number:120842
Language:English
ISSN:00223093
CODEN:JNCSBJ
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">Tellurite oxyfluoride glasses with composition of 71TeO<inf>2</inf>-10ZnO-10BaF<inf>2</inf>-4K<inf>2</inf>O-3Nb<inf>2</inf>O<inf>5</inf>-2TiO<inf>2</inf> doped with different concentrations of DyF<inf>3</inf> (0.3, 0.4, 0.5, 0.7, 1 wt%) were prepared by melt-quenching method under dry O<inf>2</inf> atmosphere. Under 808 nm laser pumping, infrared (IR) fluorescence emission with central wavelength of 2.86 &mu;m was detected. Basing on the Judd-Ofelt (J-O) theory, the intensity parameters (&Omega;<inf>&lambda;</inf>, &lambda;=2, 4 and 6) and radiative property were calculated and characterized through the transmission and fluorescence spectra. The tellurite oxyfluoride glass had high thermal stability and large emission cross-section at 2.86 &mu;m (7.82 &times; 10<sup>&minus;21</sup> cm<sup>2</sup>). DyF<inf>3</inf> doped tellurite oxyfluoride glass ceramic were prepared via in-situ crystallization of ZnTe nanocrystals through heat treatment to ameliorate the surrounding environment of rare earth (RE) ions. The tellurite oxyfluoride glass ceramic prepared by heat treatment at 390&deg;C had great enhancement in 2.86 &mu;m fluorescence intensity (about 7 times), longer fluorescence lifetime (126 &mu;s), indicating that the in-situ crystallization method may be helpful for exploring tellurite based high gain laser glass.<br/></div> &copy; 2021
Number of references:53
Main heading:Glass ceramics
Controlled terms:Neodymium compounds - II-VI semiconductors - Niobium oxide - Nanocrystals - Pumping (laser) - Rare earths - Tellurium compounds - Zinc oxide - Barium compounds - Dysprosium compounds  - Heat treatment - Judd-Ofelt theory - Titanium dioxide - Fluorescence
Uncontrolled terms:Controlled precipitation - Emission enhancement - Fluorescence enhancement - Glass-ceramics - In-situ crystallization - Infrared fluorescences - Judd- Ofelt theories - Oxyfluoride glass - Oxyfluoride glass-ceramics - Tellurite oxyfluoride glass
Classification code:537.1  Heat Treatment Processes - 712.1  Semiconducting Materials - 741.1  Light/Optics - 744.1  Lasers, General - 761  Nanotechnology - 804  Chemical Products Generally - 804.2  Inorganic Compounds - 931.3  Atomic and Molecular Physics - 933.1  Crystalline Solids
Numerical data indexing:Pressure 2.02E+05Pa, Size 2.10E-01m, Size 2.86E-06m, Size 8.08E-07m, Temperature 2.00E+00K to 4.00E+00K, Temperature 6.63E+02K, Time 1.26E-04s
DOI:10.1016/j.jnoncrysol.2021.120842
Funding details:  Number: 61775235, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XAB2016A08, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2017446, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;Number: 2021GY-251, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:This work is financially supported by the National Natural Science Foundation of China (NSFC No. 61775235 ), West Young Scholars Program of the Chinese Academy of Sciences ( XAB2016A08 ), the Youth Innovation Promotion Association, CAS ( 2017446 ) and the Shaanxi Provincial Key Research and Development Program ( 2021GY-251 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 71>
 
Accession number:20212010359869
Title:Spatio-temporal Resolution Studies on a Synchronous Streak Tube
Title of translation:&#21516;&#27493;&#25195;&#25551;&#31649;&#26102;&#31354;&#20998;&#36776;&#29305;&#24615;&#30740;&#31350;
Authors:Tian, Liping (1); Shen, Lingbin (1); Chen, Lin (1); Li, Lili (2); Chen, Ping (2); Tian, Jinshou (2) 
Author affiliation:(1) School of Network and Communication Engineering, Jinling Institute of Technology, Nanjing; 211169, China; (2) Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Tian, Jinshou(tianjs@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:4
Issue date:April 25, 2021
Publication year:2021
Article number:0404002
Language:English
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">A synchronous streak tube capable of providing high spatial resolution, high temporal resolution and large working area is numerically designed and experimentally demonstrated. In this paper, a 3-D model developed to systematically and comprehensively analyze the dependence of the physical temporal resolution on the accelerating voltage, the spatial resolution on the deflector-to-cathode distance, the dynamic spatial resolution and temporal resolution on the scanning velocity. Finally, geometry and electric parameters of d<inf>DC</inf>=100 mm, U<inf>g</inf>=700 V, and T<inf>screen</inf>= 0.5 ns are proposed to optimize the streak tube performances. The numerical simulations show that the static spatial resolution is higher than 25 lp/mm@MTF=10% and the dynamic spatial resolution is higher than 16 lp/mm@MTF=10% over the whole effective photocathode area of 18 mm&times;2 mm. And, the simulated temporal resolution is better than 5.6 ps at T<inf>screen</inf>=0.5 ns. Furthermore, the photocathode radiant sensitivity can reach 51 mA/W at the wavelength of 400 nm. The tested static spatial resolution is as high as 25 lp/mm@CTF=13%.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:14
Main heading:Photocathodes
Controlled terms:Dynamics - Image resolution - Streak cameras
Uncontrolled terms:Accelerating voltages - Electric parameters - High spatial resolution - High temporal resolution - Scanning velocity - Spatial resolution - Spatio-temporal resolution - Temporal resolution
Classification code:714.1  Electron Tubes - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment
Numerical data indexing:Size 4.00e-07m, Time 5.00e-10s, Time 5.60e-12s
DOI:10.3788/gzxb20215004.0404002
Funding details:  Number: 12005083, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: GJJSTD20190004, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: BK20190112, Acronym: -, Sponsor: Natural Science Foundation of Jiangsu Province;Number: jit-b-202012, Acronym: JIT, Sponsor: Jinling Institute of Technology;
Funding text:Foundation item&#65306;Ph.D. Project Supported by the Jinling Institute of Technology&#65288;Nos. jit-b-202012&#65292;jit-b-201814&#65289;&#65292;the Natural Science Foundation of Jiangsu Province&#65292;China&#65288;No. BK20190112&#65289;&#65292;the National Natural Science Fund&#65288;No. 12005083&#65289;&#65292;the Scientific Instrument Developing Project of the Chinese Academy of Sciences&#65288;No. GJJSTD20190004&#65289;. First author&#65306;TIAN Liping&#65288;1990&mdash;&#65289;&#65292;female&#65292;lecturer&#65292;Ph.D. degree&#65292;mainly focuses on electro-optical system design. Email&#65306; tianliping@jit.edu.cn. Corresponding author&#65306;TIAN Jinshou&#65288;1970&mdash;&#65289;&#65292;male&#65292;professor&#65292;Ph.D. degree&#65292;mainly focuses on ultrafast diagnostic technology and photoelectric imaging technology. Email&#65306;tianjs@opt.ac.cn Received&#65306;Oct.23&#65292;2020&#65307;Accepted&#65306;Feb.14&#65292;2021Ph.D. Project Supported by the Jinling Institute of Technology (Nos. jit-b-202012, jit-b-201814), the?Natural?Science?Foundation?of?Jiangsu?Province, China (No. BK20190112), the National Natural Science Fund (No. 12005083), the Scientific Instrument Developing Project of the Chinese Academy of Sciences (No. GJJSTD20190004).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 72>
 
Accession number:20203909239219
Title:The dual-injection Ge-on-Si photodetectors with high saturation power by optimizing light field distribution
Authors:Cui, Jishi (1); Li, Tiantian (2); Yang, Fenghe (3); Cui, Wenjing (1); Chen, Hongmin (1) 
Author affiliation:(1) School of Information Engineering, Sanming University, Sanming; 365004, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (3) Peking University Yangtze Delta Institute of Optoelectronics, Nantong; 226006, China 
Corresponding author:Cui, Jishi(jscui@fjsmu.edu.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:480
Issue date:1 February 2021
Publication year:2021
Article number:126467
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier B.V., Netherlands
Abstract:In this work, we put forward the length design principle of the dual-injection integrated Ge-on-Si photodetectors based on the characteristics of the light field distribution. When the length of the absorption layer makes the maximum intensity of the incident light from both ends are alternately distributed, the light field distribution is more uniform. Based on this principle, the shorter photodetector could get better saturation performance. Two dual-injection photodetectors with the length of 6&mu;m and 10&mu;m have been investigated, the experimental results show that the saturation current of 6&mu;m length device is 18.33% higher, and the bandwidth is 138.60% higher at 10 mW incident power comparing with the 10&mu;m length device. The 6&mu;m length photodetector realized a responsivity of 1.07 A/W, a bandwidth of 37.3 GHz at 50 &mu;W luminous power @1550 nm.<br/> &copy; 2020 Elsevier B.V.
Number of references:27
Main heading:Photodetectors
Controlled terms:Photons - Incident light - Silicon photonics - Bandwidth
Uncontrolled terms:Absorption layer - Dual injections - Ge-on-si photodetectors - Length designs - Light field distribution - Maximum intensities - Saturation current - Saturation power
Classification code:716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 931.3  Atomic and Molecular Physics
Numerical data indexing:Frequency 3.73e+10Hz, Percentage 1.39e+02%, Percentage 1.83e+01%, Power 1.00e-02W, Power 5.00e-05W, Size 1.00e-05m, Size 6.00e-06m
DOI:10.1016/j.optcom.2020.126467
Funding details:  Number: -, Acronym: LOCT, Sponsor: State Key Laboratory of Advanced Optical Communication Systems and Networks.;
Funding text:This work was supported in part by State Key Laboratory of Advanced Optical Communication Systems and Networks, China , in part by Digital Fujian Research Institute for Industrial Energy Big Data, China , in part by Fujian Province University Key Laboratory for the Analysis and Application of Industry Big Data, China , in part by Fujian Key Lab of Agriculture IOT Application, China ; and in part by IOT Application Engineering Research Center of Fujian Province Colleges and Universities, China .
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 73>
 
Accession number:20215011322429
Title:Progress in Study and Application of Optical Field Modulation Technology Based on Liquid Crystal Spatial Light Modulators (Invited)
Title of translation:&#22522;&#20110;&#28082;&#26230;&#31354;&#38388;&#20809;&#35843;&#21046;&#22120;&#30340;&#20809;&#22330;&#35843;&#25511;&#25216;&#26415;&#21450;&#24212;&#29992;&#36827;&#23637;(&#29305;&#36992;)
Authors:Zhou, Yuan (1, 2); Li, Runze (1); Yu, Xianghua (1); Yan, Shaohui (1); Li, Xing (1, 2); Gao, Wenyu (1, 2); Liu, Chao (1, 2); Peng, Tong (1); Yang, Yanlong (1); Min, Junwei (1); Wang, Ping (1, 3); Qu, Jun (4); Yao, Baoli (1, 2) 
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) Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Biomedical Photonics and Sensing, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an; 710049, China; (4) School of Physics and Electronic Information, Anhui Normal University, Wuhu; 241002, China 
Corresponding authors:Yao, Baoli(yaobl@opt.ac.cn); Yao, Baoli(yaobl@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:11
Issue date:November 25, 2021
Publication year:2021
Article number:1123001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">As an electromagnetic wave, optical field can be described by using parameters of amplitude, phase and polarization. Spatial optical field modulation technology enables to generate novel spatially structured optical field by modulating these parameters. Compared with other types of modulation devices, the liquid crystal spatial light modulator has the advantages of high diffraction efficiency, millions of modulated pixels, and real-time dynamic modulation. It has become the mainstream device for spatial optical field modulation. In this paper, we first give an introduction to the principles and algorithms of optical field modulation technology, including single-parameter modulation, complex amplitude modulation, and multi-parameter modulation by using the liquid crystal spatial light modulators. Some applications of these optical modulation technologies in holographic optical tweezers, optical microscopy, optical information storage, optical micromachining, imaging behind scattering media, and optical communication are exampled. Then we discuss the problems to be resolved, the development trends and the development prospects of the technology. The purpose of this paper is to help researchers systematically understand the principle, the latest research progress and the potential application of the optical field modulation technology based on the liquid crystal spatial light modulators, and provide some references for research in this field.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:191
Main heading:Light modulation
Controlled terms:Liquid crystals - Holograms - Optical signal processing - Optical communication - Optical tweezers - Electromagnetic waves - Frequency domain analysis - Light modulators
Uncontrolled terms:Computergenerated holograms (CGH) - Fourier holograms - Liquid crystal spatial light modulators - Optical field modulation in the spatial domain - Optical field modulation in the spatial frequency domain - Optical field modulations
Classification code:711  Electromagnetic Waves - 717.1  Optical Communication Systems - 741.1  Light/Optics - 743  Holography - 744.9  Laser Applications - 921.3  Mathematical Transformations
DOI:10.3788/gzxb20215011.1123001
Funding details:  Number: 11704405,11974417,61975233,81427802, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2018YFE0128300, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;Number: 2020SF-193, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:National Natural Science Foundation of China (Nos.11704405, 81427802, 61975233, 11974417), National Key Research and Development Project (No. 2018YFE0128300), Key Research and Development Program of Shaanxi Province (No. 2020SF-193)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 74>
 
Accession number:20211210123389
Title:Trapping performance of holographic optical tweezers generated with different hologram algorithms    (Open Access)
Authors:He, M.R. (1, 2); Liang, Y.S. (3); Bianco, P.R. (4); Wang, Z.J. (3); Yun, X. (3); Cai, Y.N. (1); Feng, K. (3); Lei, M. (2, 3) 
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) MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'An Jiaotong University, Xi'an; 710049, China; (4) Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha; NE; 68198-6025, United States 
Corresponding author:Lei, M.(ming.lei@mail.xjtu.edu.cn)
Source title:AIP Advances
Abbreviated source title:AIP Adv.
Volume:11
Issue:3
Issue date:March 1, 2021
Publication year:2021
Article number:035130
Language:English
E-ISSN:21583226
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:Quantitative measurement of small forces and small displacement using holographic optical tweezers (HOTs) is finding increasing applications due to the features of non-contact and high accuracy manipulation. Although hologram optimization algorithms have been widely reported, the holographic optical trapping performance relying on the algorithms has not been studied systematically. In this paper, we investigated the force measuring the performance of various types of HOTs generated with six different hologram algorithms (GSW, GAA, GS, SR, S, and RM). To do this, we built up a HOT instrument and compared the light fields' intensity distribution, trap stiffness, efficiency, and calculation time of multi-point trap arrays generated by six hologram algorithms with this setup. Our work will provide a better understanding of the performance of different hologram algorithms in HOTs.<br/> &copy; 2021 Author(s).
Number of references:39
Main heading:Holograms
Controlled terms:Optical tweezers - Lithography
Uncontrolled terms:Calculation time - Holographic optical tweezers - Intensity distribution - Opticaltrapping - Optimization algorithms - Quantitative measurement - Small displacement - Trap stiffness
Classification code:743  Holography - 744.9  Laser Applications
DOI:10.1063/5.0033186
Funding details:  Number: GM100156, Acronym: NIH, Sponsor: National Institutes of Health;Number: 61905189,62005208, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2019M663656,2020M673365, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: 2017YFC0110100, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:This work was supported by the Natural Science Foundation of China (NSFC) (Grant Nos. 61905189 and 62005208), the China Postdoctoral Science Foundation (Grant Nos. 2019M663656 and 2020M673365), the National Key Research and Development Program of China (Grant No. 2017YFC0110100), and the National Institutes of Health Grant (Grant No. GM100156).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 75>
 
Accession number:20212910654389
Title:High sensitivity FBG humidity sensor coated with graphene and polyimide films
Authors:Li, Ziwan (1, 2); Dong, Bo (3); Chen, Enqing (1, 2); Li, Yang (1, 2); Zhao, Wei (1, 2); Wang, Yishan (1, 2); Gao, Cunxiao (1, 2) 
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) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China 
Corresponding author:Dong, Bo(dongbo@sztu.edu.cn)
Source title:Optical Fiber Technology
Abbreviated source title:Opt. Fiber Technol.
Volume:66
Issue date:October 2021
Publication year:2021
Article number:102635
Language:English
ISSN:10685200
CODEN:OFTEFV
Document type:Journal article (JA)
Publisher:Academic Press Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">A high sensitivity FBG humidity sensor coated with polyimide and graphene films is proposed. The sensing probe is based on a fiber Bragg grating coated with an inner polyimide film and an outer graphene film. The sensor shows the high humidity sensitivity and experimental results show that its sensitivity is 1.80 times that of the sensor coated with only polyimide film. Within the humidity range of 30%&ndash;70%RH, its sensitivity reaches 19.8 pm/%RH and is almost 25 times that of the other lower sensitivity FBG humidity sensor.<br/></div> &copy; 2021 Elsevier Inc.
Number of references:22
Main heading:Polyimides
Controlled terms:Graphene - Humidity sensors - Fiber Bragg gratings
Uncontrolled terms:Graphene films - High humidity - High sensitivity - Polyimide film - Sensing probe
Classification code:443.2  Meteorological Instrumentation - 761  Nanotechnology - 804  Chemical Products Generally - 815.1.1  Organic Polymers
DOI:10.1016/j.yofte.2021.102635
Funding details:  Number: 61875227, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: Y829321213, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This work is supported in part by the Chinese Academy of Sciences Pioneer Hundred Talents Program (No. Y829321213 ) and the National Natural Science Foundation of China (No. 61875227 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.ErratuFlg:2017374189
 
 
<RECORD 76>
 
Accession number:20212410482956
Title:Small-size streak tube with high edge spatial resolution
Authors:Tian, Liping (1); Shen, Lingbin (1); Li, Lili (2); Wang, Xing (2); Chen, Ping (2); Wang, Junfeng (2); Chen, Lin (1); Zhao, Wei (2); Tian, Jinshou (2) 
Author affiliation:(1) School of Network and Communication Engineering, Jinling Institute of Technology, Nanjing; 211169, China; (2) State Key Laboratory of Transient Optics and Photonics, Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China 
Corresponding author:Tian, Liping(tianliping@jit.edu.cn)
Source title:Optik
Abbreviated source title:Optik
Volume:242
Issue date:September 2021
Publication year:2021
Article number:166791
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:<div data-language="eng" data-ev-field="abstract">A small-size streak tube with high spatial resolution over the entire working area is designed, manufactured and tested. The streak tube adopts curved photocathode and curved screen to improve the spatial resolution, especially at the edge area by decreasing the aberration. An accelerating slit electrode, instead of a mesh which limits the luminance gain of the tube, is employed next to the photocathode to improve the electrical resistance, reliability and the temporal resolution by increasing the electron acceleration field. The results in the numerical simulations show that the spatial resolution is 29 lp/mm @ MTF = 10 % over the whole effective photocathode area. The tested results show that the small-size streak tube can offer static spatial resolution as high as 20 lp/mm over the whole effective area. And, the maximum point of the static spatial resolution 25 lp/mm, is deviated away from the center of the photocathode. The experiment results indicate that the spatial resolution is higher than 23.4 lp/mm @ MTF = 10 %. The luminance gain can reach to 39.4 and the dimension of the streak tube is only &Phi;40 mm &times; 140 mm. Comparing with 5200 streak tube_XIOPM, we demonstrated that this small-size streak tube in our design not only possesses the compact size, but also obtain a much larger effective working area and much higher luminance gain.<br/></div> &copy; 2021 Elsevier GmbH
Number of references:16
Main heading:Luminance
Controlled terms:Streak cameras - Image resolution - Photocathodes
Uncontrolled terms:42.79. - 85.60. - Bt - Ha - Ls - Luminance gain - Small-size streak tube - Spatial resolution - Temporal resolution
Classification code:714.1  Electron Tubes - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment
Numerical data indexing:Percentage 1.00E+01%, Size 1.40E-01m
DOI:10.1016/j.ijleo.2021.166791
Funding details:  Number: GJJSTD20190004, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: BK20190112, Acronym: -, Sponsor: Natural Science Foundation of Jiangsu Province;Number: SKLST202012, Acronym: SKLTOP, Sponsor: State Key Laboratory of Transient Optics and Photonics;Number: jit-b-201814,jit-b-202012, Acronym: JIT, Sponsor: Jinling Institute of Technology;
Funding text:This work is supported by the Scientific Instrument Developing Project of the Chinese Academy of Sciences (Grant No. GJJSTD20190004 ), the Jinling Institute of Technology (Grant No. jit-b-202012 and No. jit-b-201814 ), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20190112 ), State Key Laboratory of Transient Optics and Photonics Technology 2020 open project (Grant No. SKLST202012 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 77>
 
Accession number:20212510524259
Title:Optical vortex lattice: An exploitation of orbital angular momentum    (Open Access)
Authors:Zhu, Liuhao (1, 2); Tang, Miaomiao (1); Li, Hehe (1); Tai, Yuping (3); Li, Xinzhong (1, 2) 
Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang; 471023, China 
Corresponding author:Li, Xinzhong(xzli@haust.edu.cn)
Source title:Nanophotonics
Abbreviated source title:Nanophotonics
Volume:10
Issue:9
Issue date:July 1, 2021
Publication year:2021
Pages:2487-2496
Language:English
E-ISSN:21928614
Document type:Journal article (JA)
Publisher:De Gruyter Open Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">Generally, an optical vortex lattice (OVL) is generated via the superposition of two specific vortex beams. Thus far, OVL has been successfully employed to trap atoms via the dark cores. The topological charge (TC) on each optical vortex (OV) in the lattice is only &plusmn;1. Consequently, the orbital angular momentum (OAM) on the lattice is ignored. To expand the potential applications, it is necessary to rediscover and exploit OAM. Here we propose a novel high-order OVL (HO-OVL) that combines the phase multiplication and the arbitrary mode-controllable techniques. TC on each OV in the lattice is up to 51, which generates sufficient OAM to manipulate microparticles. Thereafter, the entire lattice can be modulated to desirable arbitrary modes. Finally, yeast cells are trapped and rotated by the proposed HO-OVL. To the best of our knowledge, this is the first realization of the complex motion of microparticles via OVL. Thus, this work successfully exploits OAM on OVL, thereby revealing potential applications in particle manipulation and optical tweezers.<br/></div> &copy; 2021 Liuhao Zhu et al., published by De Gruyter, Berlin/Boston 2021.
Number of references:41
Main heading:Optical tweezers
Controlled terms:Vortex flow - Crystal lattices - Optical lattices - Angular momentum - Physical optics
Uncontrolled terms:Complex motion - High-order - Micro-particles - Optical vortices - Orbital angular momentum - Particle manipulation - Topological charges - Vortex beams
Classification code:631.1  Fluid Flow, General - 741.1  Light/Optics - 744.8  Laser Beam Interactions - 744.9  Laser Applications - 933.1.1  Crystal Lattice
DOI:10.1515/nanoph-2021-0139
Funding details:  Number: 21zx002, Acronym: -, Sponsor: -;Number: 11704098,11974101,11974102, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: SKLST201901, Acronym: SKLTOP, Sponsor: State Key Laboratory of Transient Optics and Photonics;
Funding text:Research funding: National Natural Science Foundation of China (Nos. 11974102, 11704098, 11974101), State Key Laboratory of Transient Optics and Photonics (No. SKLST201901), and Key Scientific Research Projects of Institutions of Higher Learning of Henan Province Education Department (No. 21zx002).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 78>
 
Accession number:20214111012348
Title:Equal spacing control of particle via cycloidal beam (Invited)
Title of translation:&#25670;&#32447;&#20809;&#26463;&#30340;&#24494;&#31890;&#31561;&#38388;&#36317;&#25805;&#25511;(&#29305;&#36992;)
Authors:Zhu, Liuhao (1); Qin, Xueyun (1); Tai, Yuping (3); Li, Xinzhong (1, 2) 
Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang; 471023, China 
Corresponding authors:Li, Xinzhong(xzli@haust.edu.cn); Li, Xinzhong(xzli@haust.edu.cn)
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue:9
Issue date:September 25, 2021
Publication year:2021
Article number:20210380
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">The discovery of orbital angular momentum (OAM) opens up a new way for the study of optical tweezers. However, the size and shape of biological cells cannot be exactly the same, when the beam with OAM manipulates the particles. So, the uneven velocity of the particles will lead to uncontrollable spacing between the particles when it carries out operations such as rotation. To solve the problem, a cycloid beam with rich regulation modes was proposed by using an arbitrary curve shaping technique and adding curvature control parameters to the traditional cycloid formula. The OAM and gradient force of the cycloid beam was theoretically analyzed, and the possibility of solving the problem was theoretically analyzed. Finally, the start and stop of particles in the process of motion were realized in the experiment, and the three particles were successfully manipulated to rotate at the same distance. The experimental results show that the error of the distance variation of the three particles during the whole rotation process can be maintained at the nanometer level. The work paves the way for future applications of light to capture and manipulate a variety of particles in other fields, particularly in the biological sciences.<br/></div> &copy; 2021, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:22
Main heading:Optical tweezers
Controlled terms:Light - Light modulation - Physical optics
Uncontrolled terms:All optical - All-optical tweezer - Biological cells - Computational holography - Control parameters - Momentum force - Orbital angular momentum - Shaping techniques - Size and shape - Spatial light modulation
Classification code:741.1  Light/Optics - 744.9  Laser Applications
DOI:10.3788/IRLA20210380
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 79>
 
Accession number:20215011309085
Title:Synchronous detection of heavy metal ions in aqueous solution by gold nanoparticle surface-enhanced laser-induced breakdown spectroscopy
Authors:Yao, Yaqian (1, 2); He, Fan (1, 2); Lin, Qingyu (3); Tian, Yonghui (2, 4); Zhang, Tianlong (4); Xu, Boping (5); Qi, Xinyuan (1); Duan, Yixiang (2, 4) 
Author affiliation:(1) Department of Physics, Northwest University, Xi'an; Shaanxi; 710069, China; (2) Research Center of Analytical Instrumentation, Northwest University, 1 Xuefu Ave, Xi'an; Shaanxi; 710075, China; (3) Research Center of Analytical Instrumentation, Sichuan University, Chengdu; 610064, China; (4) Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an; Shaanxi; 710069, China; (5) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Duan, Yixiang(yduan@nwu.edu.cn)
Source title:Journal of Analytical Atomic Spectrometry
Abbreviated source title:J Anal At Spectrom
Volume:36
Issue:12
Issue date:December 2021
Publication year:2021
Pages:2639-2648
Language:English
ISSN:02679477
E-ISSN:13645544
CODEN:JASPE2
Document type:Journal article (JA)
Publisher:Royal Society of Chemistry
Abstract:<div data-language="eng" data-ev-field="abstract">Heavy metal ion-induced water pollution has become a severe environmental problem in the world. Although providing a powerful technique for multi-element detection, laser-induced breakdown spectroscopy (LIBS) suffers from insufficient sensitivity for detecting heavy metal ions in aqueous solution due to water splashing and surface ripples. In this work, a simple and sensitive method called gold nanoparticle (AuNP) surface-enhanced laser-induced breakdown spectroscopy (SELIBS) was proposed to detect trace or ultra-Trace heavy metal ions in aqueous solutions using a portable instrument. Firstly, the coulombic force allows the adhesion of negatively charged AuNPs and cationic amphiphilic solutions to capture heavy ions, thereby directly improving signal intensity. Interestingly, AuNP size-dependent signal enhancement was found in heavy metal ions through LIBS. To be specific, the signal intensity of Cu, Pb, and Cr increased by 9, 23, and 26 times, respectively, under the optimal AuNP size with a diameter of 13 nm compared to that of the pure target solution. Although the sizes of AuNPs did not affect the plasma temperature and electron density, the local electric field and coulombic force effectively enhanced the LIBS signal. Under optimized experimental conditions, the proposed method achieves sensitive detection of heavy metal ions of Cu, Pb, and Cr with low detection limits (LODs) of 5 ng mL-1, 22 ng mL-1, and 9 ng mL-1, respectively. Moreover, the recoveries of all analytical elements in environmental water samples were analyzed by the standard addition method. The recoveries were in the range of 92.70-100.19%, which further proves the feasibility and potential of surface-enhanced laser-induced breakdown spectroscopy of AuNPs in analyzing actual liquid samples. This journal is<br/></div> &copy; The Royal Society of Chemistry.
Number of references:44
Main heading:Gold nanoparticles
Controlled terms:Electric fields - Heavy metals - Water pollution - Metal ions - Laser induced breakdown spectroscopy - Solutions - Atomic emission spectroscopy - Metal nanoparticles - Trace elements - Water treatment
Uncontrolled terms:Coulombic forces - Elements detection - Environmental problems - Heavy metal ion - Multielements - Sensitive method - Signal intensities - SIMPLE method - Surface ripples - Synchronous detection
Classification code:445.1  Water Treatment Techniques - 453  Water Pollution - 531  Metallurgy and Metallography - 531.1  Metallurgy - 701.1  Electricity: Basic Concepts and Phenomena - 761  Nanotechnology - 931.1  Mechanics
Numerical data indexing:Mass density 2.20E-05kg/m3, Mass density 5.00E-06kg/m3, Mass density 9.00E-06kg/m3, Percentage 9.27E+01% to 1.0019E+02%, Size 1.30E-08m
DOI:10.1039/d1ja00310k
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 80>
 
Accession number:20211710242449
Title:Dispersed pulses created by aperiodic binary spectral phase jump and applications for pulse shaping    (Open Access)
Authors:Liu, Xin (1, 2); Wang, Hushan (1, 2); Cao, Huabao (1, 2, 3); Yuan, Hao (1, 2); Huang, Pei (1); Wang, Yishan (1, 2); Zhao, Wei (1, 2); Fu, Yuxi (1, 2) 
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; Shaanxi; 710119, China; (2) University of Chinese Academy of Science, Beijing; 100049, China; (3) ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner u. 3, Szeged; 6728, Hungary 
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:29
Issue:8
Issue date:April 12, 2021
Publication year:2021
Pages:12319-12329
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Inspired by pulse-pair generation with periodic phase jump, the generation of dispersed pulses with aperiodic binary spectral phase jump (ABSPJ) is proposed and theoretically investigated. It is presented by the numerical simulations that two dispersed pulses can be generated by ABSPJ of &pi;. The dispersion of one pulse is opposite to the other and can be tuned freely with engineering of the phase jump. The generated dispersed pulse-pair is potentially of great interest for various applications, such as two-dimensional spectroscopy, double pulses laser-wakefield acceleration (LWFA) and chirp management in dual-chirped optical parametric amplification (DC-OPA) system to generate TW single-cycle mid-infrared (MIR) pulses. Furthermore, a pulse shaper configured as a micro-electro-mechanical systems (MEMS) located at the Fourier plane of a 4-f dispersion-free compressor is suggested and the implementation in a high repetition optical parametric chirped pulse amplification (OPCPA) system with picosecond pump has been numerically studied. The simulations showed that MEMS of 900 pixels is enough to pre-compensate TOD of 200000 fs<sup>3</sup> for a pulse of 20 fs. Because pixel with only two piston-levels is necessary for such MEMS, the pulse shaper is expected to be compact and reliable.<br/></div> &copy; 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Number of references:48
Main heading:Pixels
Controlled terms:MEMS - Optical parametric amplifiers - Optical pumping - Optical pulse shaping
Uncontrolled terms:Chirp management - Fourier planes - High repetition - Laser wakefield acceleration - Micro electromechanical system (MEMS) - Optical parametric amplification - Optical parametric chirped-pulse amplification - Single cycle
Classification code:704.2  Electric Equipment - 713.4  Pulse Circuits - 714  Electronic Components and Tubes
Numerical data indexing:Time 2.00e-14s
DOI:10.1364/OE.419450
Funding details:  Number: GINOP 2.3.6-15-2015-00001, Acronym: -, Sponsor: -;Number: S19-020-III, Acronym: -, Sponsor: -;Number: 202005YK01, Acronym: -, Sponsor: -;Number: -, Acronym: EC, Sponsor: European Commission;Number: 61690222,XAB2019B25, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: J20-021-III, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: ERDF, Sponsor: European Regional Development Fund;Number: 2019JCW-03, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:Acknowledgments. Huabao Cao acknowledges fruitful discussions with Mikhail Kalashnikov and Roland Nagymi-haly from ELI-ALPS. The ELI-ALPS project (GINOP-2.3.6-15-2015-00001) is supported by the European Union and co-financed by the European Regional Development Fund.Funding. Science and Technology Program of Xi&rsquo;an (No. 202005YK01); Natural Science Basic Research Program of Shaanxi Province (No. 2019JCW-03); Key Deployment Research Program of XIOPM (No. S19-020-III); Major Science and Technology Infrastructure Pre-research Program of the CAS (No. J20-021-III); National Natural Science Foundation of China (No. 61690222); Light of West China Program (XAB2019B25); ELI-ALPS (GINOP 2.3.6-15-2015-00001).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 81>
 
Accession number:20220911713137
Title:Properties of Optical Vortex Lattice Generated via Multiple Plane Wave Interference
Title of translation:&#22810;&#24179;&#38754;&#27874;&#24178;&#28041;&#30340;&#20809;&#23398;&#28065;&#26059;&#26230;&#26684;&#29305;&#24615;&#30740;&#31350;
Authors:Qin, Xueyun (1, 2); Zhu, Liuhao (1); Tai, Yuping (3); Tang, Jie (2); Li, Xinzhong (1, 2) 
Author affiliation:(1) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471023, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang; 471023, China 
Corresponding authors:Li, Xinzhong(xzli@haust.edu.cn); Li, Xinzhong(xzli@haust.edu.cn)
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:41
Issue:21
Issue date:November 10, 2021
Publication year:2021
Article number:2126001
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Multiple plane wave interference (MPWI) is a typical method to produce an optical vortex lattice (OVL). In this letter, via defining the wave vector space coordinate system, a modulating method of OVL with MPWI is proposed, the OVLs generated by four plane wave and five plane wave interference are simulated, the gradient force and energy flow of the OVL are calculated, and its application in the field of particle manipulation is analyzed. Accordingly, a more flexible and richer optical field distribution is obtained via adjusting the size of the partial wave vector and the angle of the rotation wave vector. Finally, by analyzing the gradient force and energy flow, it is found that the light field with a specific purpose can be generated by this method when manipulating particles. This study enriches the diversity of modes of OVL generated by MPWI and provides a novel idea for the study of OVL based on MPWI.<br/></div> &copy; 2021, Chinese Lasers Press. All right reserved.
Number of references:30
Main heading:Physical optics
Controlled terms:Particle size analysis - Optical lattices - Vector spaces - Elastic waves - Crystal lattices - Wave propagation - Vortex flow
Uncontrolled terms:Energy flow - Forces flow - Gradient energy - Gradient force - Multiple plane wave interference - Optical vortex lattice - Optical- - Particle manipulation - Plane wave - Wave vector
Classification code:631.1  Fluid Flow, General - 741.1  Light/Optics - 744.8  Laser Beam Interactions - 921  Mathematics - 931.1  Mechanics - 933.1.1  Crystal Lattice - 951  Materials Science
DOI:10.3788/AOS202141.2126001
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 82>
 
Accession number:20213510824261
Title:Development of High-Power Ultrafast Fiber Laser Technology
Title of translation:&#39640;&#21151;&#29575;&#36229;&#24555;&#20809;&#32420;&#28608;&#20809;&#25216;&#26415;&#21457;&#23637;&#30740;&#31350;
Authors:Liu, Yizhou (1); Qiao, Wenchao (1); Gao, Kong (1, 2); Xu, Rong (1); Feng, Tianli (1, 2); Zhang, Meng (1); Li, Xun (3); Liang, Yangyang (1, 2); Li, Tao (1, 2) 
Author affiliation:(1) Laser Physics and Technology Laboratory, School of Information Science and Engineering, Shandong University, Qingdao; 266237, China; (2) China Key Laboratory of Laser & Infrared System (Shandong University), Ministry of Education, Qingdao; 266237, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Li, Tao(litao@sdu.edu.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:48
Issue:12
Issue date:June 25, 2021
Publication year:2021
Article number:1201003
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press
Abstract:<div data-language="eng" data-ev-field="abstract">Significance: In 1960, after the invention of the first ruby laser, fast-developed solid-state, fiber, gas, and semiconductor lasers provided great support for the research and development of multiple applications, such as optical communication, industrial processing and manufacturing, military and national defense, and state-of-the-art scientific research. Fiber lasers with good heat dissipation characteristics, excellent transverse mode, high amplification efficiency, compact laser construction, and less costs have become the first choice in developing next generation high-power ultrafast lasers. Fiber lasers can achieve long-term operation stability with good beam quality under above-average power because of their waveguide characteristics and large specific gain fiber surface area. High-power ultrafast fiber lasers usually contain four modules, ultrafast fiber oscillators, optical parameters management, ultrafast fiber amplifiers, and nonlinear compression. Ultrafast fiber oscillators provide seed lasers to achieve high-power ultrafast fiber lasers. A qualified mode-locked fiber oscillator has long-term stability and a proportional repetition shared rate corresponding to the requirements of high-power fiber amplifications. Optical parameters management plays a key role in inhibiting uncompensated nonlinear effects and enabling high-energy pulse output with good pulse quality after optical pulse stretching, high power fiber amplification, and optical pulse compression. The ultrafast fiber amplifiers are key modules to scale up the average power of the stretched-signal pulses. Unfortunately, the uncompensated nonlinear phase introduced by the high-peak power of the signal pulse distorts the pulse profile during its propagation in the fiber system. Based on the well-managed optical parameters of fiber lasers, the well-known fiber amplification methods, such as chirped-pulse, divided-pulse, and pre-chirp managed amplifications are making a significant breakthrough in achieving high-power ultrafast fiber lasers. The pulse duration after high-power fiber amplification is hundreds of femtoseconds limited by the gain-narrowing effect. Therefore, a further cascaded nonlinear compression stage is needed for shortening the amplified pulses, which can realize single/few optical cycle pulse duration to fulfill the requirements of the state-of-the-art physical experiments. With their excellent optical characteristics, the fast-developing high-power fiber lasers can play an increasingly important role in multiple applications. Progress Progress in developing ultrafast fiber oscillators, optical parameters management, ultrafast fiber amplifiers, and nonlinear compression are summarized in this paper, and latest published results are discussed by illustrating the advantages and disadvantages of different methods. The highest repetition rate of fiber oscillators reported using the method of nonlinear polarization rotation is 1 GHz provided to be useful in astronomical optical frequency comb, pulse stacking, and the cavity-enhanced high harmonic generation. The highest average output power and pulse energies are 1.98 W and 684 nJ, which are achieved with the nonlinear loop mirror mode-locking scheme, respectively. Applying a semiconductor saturable absorber mirror to the mode-locked fiber laser can generate an output mode-locked laser with the repetition rate range of 10 kHz1 GHz and sub-&mu;J pulse energy. As a newly invented mode-locked method, Mamyshev mode-locked fiber laser has attracted attention for its broadband optical spectrum, high-pulse energy output, and high-peak power. As the seeder for a high-power ultrafast fiber laser system, further efforts need to be taken in developing a more stable fiber oscillator with better parameters. Relying on optical parameter management, current ultrafast fiber amplifiers are realized with different amplification methods, such as chirped-pulse, divided-pulse, and pre-chirp managed amplifications. The highest average output power of 830 W at 1 &mu;m was reported by applying the chirped-pulse amplification. Limited by the transverse mode instability and thermal damage threshold, there is one research direction for further improvement that can be realized by searching for new gain materials with better optical performances. Combining the chirped-pulse and multi-channel divided-pulse amplifications, the highest average output power of 10.4 kW was obtained in a 12-channel fiber laser amplifier. 36 fs mode-locked pulses with 100 W average power were achieved with the method of pre-chirp managed amplification, avoiding adding a cascaded nonlinear compression stage. Apart from the aforementioned amplification methods, coherent pulse stacking method is also an efficient way in realizing ultrafast fiber laser with high-pulse energy. Pulse energy of 10 mJ was achieved with the coherent pulse stacking based on the high-power ultrafast fiber laser source. It is difficult to realize sub-100 fs or even shorter pulse durations in a high-power fiber chirped pulse amplification system due to the gain-narrowing effect. Therefore, a further nonlinear compression stage is necessary to satisfying the state-of-the-art applications, requiring short pulse duration. Multipass cells with quartz sheet/noble gas and noble-gas-filled hollow-core fibers are two common constructions in building the nonlinear compression stage, which are illustrated in the nonlinear compression section of this paper. The pulse duration can be compressed to 22 fs, and a pulse energy of 15.6 &mu;J was realized in the multipass cell construction. Using the noble-gas-filled hollow-core fibers, pulse duration was shortened to approximately 4.3 fs corresponding to a 1.6 optical cycle with a pulse energy of 1 mJ. Conclusions and Prospect In this paper, the high-power ultrafast fiber laser systems are introduced. Research and development status of high-power ultrafast fiber lasers are illustrated along with introducing principles and internal relations of four fundamental modules of ultrafast fiber oscillators, optical parameters management, ultrafast fiber amplifiers, and nonlinear compression. Depending on the fast-developing requirements from multiple state-of-the-art applications, more efforts need to be taken. Further research directions in developing high-power ultrafast fiber lasers have prospected. One promising way is investigating new fiber materials with promising better optical parameters compared to fused silica. Further, making contributions in developing the aforementioned fiber amplification methods is also an efficient way in developing fiber lasers with above-average power, higher-pulse energy, and shorter pulse duration. Newly designed optical fiber amplification methods still need to be invented by carefully considering the optical characteristics of fiber gain material and theoretical nonlinear optical conditions. High-power ultrafast fiber lasers can play a key role in multiple state-of-the-art applications relying on the development of searching for more functional fiber gain materials, optimizing aforementioned amplification techniques, and inventing new methods in amplifying high-power ultrafast fiber lasers.<br/></div> &copy; 2021, Chinese Lasers Press. All right reserved.
Number of references:129
Main heading:Fiber lasers
Controlled terms:Semiconductor lasers - Fibers - Military applications - Amplification - Industrial research - Fiber amplifiers - Laser applications - High power lasers - Ultrafast lasers - Nonlinear optics
Uncontrolled terms:Amplification efficiencies - Chirped pulse amplification systems - Chirped pulse amplifications - High harmonic generation - Long-term operation stabilities - Nonlinear polarization rotation - Research and development - Ultrafast fiber amplifiers
Classification code:404.1  Military Engineering - 741.1.1  Nonlinear Optics - 744.1  Lasers, General - 744.4  Solid State Lasers - 744.4.1  Semiconductor Lasers - 744.9  Laser Applications - 901.3  Engineering Research - 912.1  Industrial Engineering
Numerical data indexing:Energy 1.00e-02J, Energy 1.00e-03J, Energy 1.56e-05J, Energy 6.84e-07J, Frequency 1.00e+09Hz, Power 1.00e+02W, Power 1.04e+04W, Power 1.98e+00W, Power 8.30e+02W, Size 1.00e-06m, Time 2.20e-14s, Time 3.60e-14s, Time 4.30e-15s
DOI:10.3788/CJL202148.1201003
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 83>
 
Accession number:20211010057464
Title:Excitation of high-quality orbital angular momentum vortex beams in an adiabatically helical-twisted single-mode fiber    (Open Access)
Authors:Ren, Kaili (1, 2); Ren, Liyong (2, 3); Liang, Jian (2, 3); Yang, Li (4); Xu, Jie (1); Han, Dongdong (1); Wang, Yongkai (1, 3); Liu, Jihong (1); Dong, Jun (1); He, Hanyu (1); Zhang, Wenfei (2, 5) 
Author affiliation:(1) School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an; 710121, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Physics and Information Technology, Shaanxi Normal University, Xi'an; 710119, China; (4) Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui; 230027, China; (5) Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan; 250358, China 
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:29
Issue:6
Issue date:March 15, 2021
Publication year:2021
Pages:8441-8450
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:A novel method to control the parameters of a chiral fiber grating structure is proposed. Mode couplings are controlled in real time during the twisting fabrication process. This chiral grating structure can satisfy the phase-matching condition for generating high-quality orbital angular momentum (OAM) beams, with an order mode of conversion efficiency over 99.9%. Both theoretical analysis and experimental results of this OAM mode conversion have been investigated, with good agreement. The results demonstrate a dual-OAM beam converter with a charge of ?}1 for the right- A nd left-handed CLPGs, respectively. The high-quality OAM beam generated in this twisted single-mode fiber process may find excellent applications in optical communications.<br/> &copy; 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
Number of references:48
Main heading:Single mode fibers
Controlled terms:Diffraction gratings - Angular momentum - Phase matching
Uncontrolled terms:Chiral fiber gratings - Fabrication process - Grating structures - High quality - Mode conversions - Mode coupling - Orbital angular momentum - Phase matching conditions
Classification code:713  Electronic Circuits - 741.1.2  Fiber Optics - 741.3  Optical Devices and Systems
Numerical data indexing:Percentage 9.99e+01%
DOI:10.1364/OE.419668
Funding details:  Number: -, Acronym: XUPT, Sponsor: Xi'an University of Posts and Telecommunications;
Funding text:Funding. Xi&rsquo;an University of Posts and Telecommunications (YJGJ201905); Natural Science Foundation of Shaanxi Provincial Department of Education (19JK0807); Natural Science Foundation of Shaanxi Province (2019JQ-862, 2019JQ-864, 2020GY-101, 2020GY-127); National Natural Science Foundation of China (61275086, 61275149, 61875165).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 84>
 
Accession number:20210509837138
Title:Localized gap modes of coherently trapped atoms in an optical lattice    (Open Access)
Authors:CHEN, ZHIMING (1, 2); ZENG, JIANHUA (3) 
Author affiliation:(1) School of Science, East China University of Technology, Nanchang; 330013, China; (2) Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan; 250358, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:ZENG, JIANHUA(zengjh@opt.ac.cn)
Source title:Optics Express
Abbreviated source title:Opt. Express
Volume:29
Issue:3
Issue date:February 1, 2021
Publication year:2021
Pages:3011-3025
Language:English
E-ISSN:10944087
Document type:Journal article (JA)
Publisher:OSA - The Optical Society
Abstract:We theoretically investigate one-dimensional localized gap modes in a coherent atomic gas where an optical lattice is formed by a pair of counterpropagating far-detuned Stark laser fields. The atomic ensembles under study emerge as &Lambda;-type three-level configuration accompanying the effect of electromagnetically induced transparency (EIT). Based on Maxwell- Bloch equations and the multiple scales method, we derive a nonlinear equation governing the spatial-temporal evolution of the probe-field envelope. We then uncover the formation and properties of optical localized gap modes of two kinds, such as the fundamental gap solitons and dipole gap modes. Furthermore, we confirm the (in)stability regions of both localized gap modes in the respective band-gap spectrum with systematic numerical simulations relying on linear-stability analysis and direct perturbed propagation. The predicted results may enrich the nonlinear horizon to the realm of coherent atomic gases and open up a new door for optical communication and information processing.<br/> &copy; 2021 Optical Society of America.
Number of references:67
Main heading:Optical lattices
Controlled terms:Energy gap - Maxwell equations - Linear stability analysis - Gases - Atoms - Nonlinear equations - Optical communication - Crystal lattices - Optical materials - Optical properties  - Nonlinear optics
Uncontrolled terms:Atomic ensemble - Counterpropagating - Electromagnetically-induced transparency - Maxwell-Bloch equation - Multiple scales methods - Spatial-temporal evolution - Stability regions - Trapped atoms
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 701.2  Magnetism: Basic Concepts and Phenomena - 717.1  Optical Communication Systems - 741.1  Light/Optics - 741.1.1  Nonlinear Optics - 741.3  Optical Devices and Systems - 744.8  Laser Beam Interactions - 921  Mathematics - 921.2  Calculus - 931.3  Atomic and Molecular Physics - 933.1.1  Crystal Lattice
DOI:10.1364/OE.412554
Funding details:  Number: 11704066,12074063,12074423, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 20202BABL211013, Acronym: -, Sponsor: Natural Science Foundation of Jiangxi Province;
Funding text:Funding. East China University of Technology (DHBK2016118); Natural Science Foundation of Jiangxi Province (20202BABL211013); National Natural Science Foundation of China (11704066, 12074063, 12074423).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 85>
 
Accession number:20212510541323
Title:Chirality-Assisted Aharonov-Anandan Geometric-Phase Metasurfaces for Spin-Decoupled Phase Modulation
Authors:Ji, Ruonan (1); Xie, Xin (1); Guo, Xuyue (1); Zhao, Yang (1); Jin, Chuan (2); Song, Kun (1); Wang, Shaowei (3); Yin, Jianbo (1); Liu, Yahong (1); Jiang, Chengming (4); Yang, Chaoshun (1); Zhao, Xiaopeng (1); Lu, Wei (3) 
Author affiliation:(1) Smart Materials Lab, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an; 710129, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (3) State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai; 200083, China; (4) School of Mechanical Engineering, Dalian University of Technology, Dalian; 116023, China 
Corresponding author:Ji, Ruonan(jiruonan@nwpu.edu.cn)
Source title:ACS Photonics
Abbreviated source title:ACS Photonics
Volume:8
Issue:6
Issue date:June 16, 2021
Publication year:2021
Pages:1847-1855
Language:English
E-ISSN:23304022
Document type:Journal article (JA)
Publisher:American Chemical Society
Abstract:<div data-language="eng" data-ev-field="abstract">In this work, a quasi-nondispersive and spin-decoupled phase modulation strategy was proposed based on the chiral structure. Owing to the spin-dependent response of the chiral structure, the evolution of the Aharonov-Anandan (AA) geometric phase can be controlled by tuning different structural parameters independently. Additionally, the chiral structure was designed nonresonant or weak-resonant to minimize the influence of strong resonant absorption and large dispersive propagation phase shift, leading to an efficiently quasi-nondispersive phase modulation. To prove the validity of the strategy, a series of umbrella-shaped reflection-Type metal-insulator-metal structures were designed as the unit cells and simulated with the finite element method. Moreover, the metasurfaces were designed based on such unit cells to generate broadband orbital angular momentums with different topological charges and spin-switchable holograms, respectively. Simulated and experimental results are in good agreement with the theoretical results. To the best of our knowledge, broadband spin-dependent phase modulation has been achieved without intentionally merging other types of phases for the first time in this work. We believe that this strategy provides a flexible approach for complex spin-or polarization-related applications in optical communication, integrated optics, optical sensing, and other related fields.<br/></div> &copy;
Number of references:40
Main heading:Geometry
Controlled terms:Metal insulator boundaries - Finite element method - Phase modulation - Optical communication
Uncontrolled terms:Dispersive propagation - Metal-insulator-metal structures - Modulation strategy - Nondispersive phase - Orbital angular momentum - Resonant absorption - Structural parameter - Topological charges
Classification code:717.1  Optical Communication Systems - 921  Mathematics - 921.6  Numerical Methods
DOI:10.1021/acsphotonics.1c00505
Funding details:  Number: 11804278,11874301,61601375,61805204, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2019JQ-133,2019JQ-241, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 310202011qd002, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:This work was partially supported by the National Natural Science Foundation of China (61805204, 61601375, 11874301, 11804278), the Natural Science Basic Research Plan in Shaanxi Province of China (2019JQ-133, 2019JQ-241), and the Fundamental Research Funds for the Central Universities of China (310202011qd002).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 86>
 
Accession number:20211410165684
Title:Numerical simulation of dielectric barrier discharge with asymmetrical electrode in atmospheric helium
Authors:Wang, Jing (1, 2); Li, Jing (1, 2); Lei, Bingying (1, 2); Ran, Shuang (1, 2); Xu, Boping (1, 2); Liu, Yinghua (1, 2); Li, Xinzhong (3); Wang, Yishan (1, 2); Tang, Jie (1, 2); Zhao, Wei (1, 2); Duan, Yixiang (4) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Physics and Engineering, Henan University of Science and Technology, Luoyang; 471023, China; (4) Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an; 710127, China 
Corresponding author:Tang, Jie(tangjie@opt.ac.cn)
Source title:Plasma Sources Science and Technology
Abbreviated source title:Plasma Sources Sci Technol
Volume:30
Issue:3
Issue date:March 2021
Publication year:2021
Article number:035012
Language:English
ISSN:09630252
E-ISSN:13616595
CODEN:PSTEEU
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">The characteristics of the dielectric barrier discharge (DBD) equipped with asymmetrical electrode (ring electrode on the upper and disk electrode on the lower) in atmospheric helium are investigated by a two-dimensional self-consistent fluid model. Simulation results show that as the applied voltage increases, the discharge enhances and the onset of discharge advances, which is similar to the results of traditional DBD. However, with the applied voltage increasing, the symmetry of the discharge current pulses in the positive and negative half cycles disappears because of the asymmetric electrode configuration. In addition, only the spatial distribution of the electron density at the peak moments of the first and second current pulses satisfies the complementary characteristics, while the spatial distribution at other peak moments does not meet the complementary characteristics. Moreover, the electric field, near the upper dielectric barrier surface, presents a curtain-like distribution with considerable radial electric field components, which results from the non-uniform radial surface charge distribution and the ring electrode configuration. The relative variation of the radial distribution of surface charge density is largely determined by the geometry of the opposite electrode.<br/></div> &copy; 2021 IOP Publishing Ltd.
Number of references:37
Main heading:Dielectric barrier discharge
Controlled terms:Electrodes - Dielectric materials - Spatial distribution - Surface charge - Dielectric devices - Flow control - Helium
Uncontrolled terms:Asymmetric electrodes - Atmospheric helium - Complementary characteristics - Dielectric barrier - Dielectric barrier discharges - Discharge current pulse - Radial distributions - Radial electric field
Classification code:405.3  Surveying - 631.1  Fluid Flow, General - 701.1  Electricity: Basic Concepts and Phenomena - 708.1  Dielectric Materials - 731.3  Specific Variables Control - 804  Chemical Products Generally - 902.1  Engineering Graphics - 921  Mathematics
DOI:10.1088/1361-6595/abe613
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 87>
 
Accession number:20210609886711
Title:Writing nanopores on a ZnS crystal with ultrafast Bessel beams
Title of translation:&#36229;&#24555;&#36125;&#22622;&#23572;&#20809;&#26463;&#22312;&#30827;&#21270;&#38156;&#26230;&#20307;&#34920;&#38754;&#21046;&#22791;&#32435;&#31859;&#23380;
Authors:Chang, Gai-Yan (1, 2); Wang, Yu-Heng (3); Cheng, Guang-Hua (4) 
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) Research Center of Semiconductor Lighting and Information Engineering Technology, South China University of Technology, Guangzhou; 510641, China; (4) School of Electronics and Information, Center for Optical Imagery Analysis and Learning, Northwestern Polytechnical University, Xi'an; 710072, China 
Corresponding author:Cheng, Guang-Hua(guanghuacheng@nwpu.edu.cn)
Source title:Chinese Optics
Abbreviated source title:Chin. Opt.
Volume:14
Issue:1
Issue date:January 2021
Publication year:2021
Pages:213-225
Language:English
ISSN:20971842
Document type:Journal article (JA)
Publisher:Editorial Office of Chinese Optics
Abstract:<div data-language="eng" data-ev-field="abstract">Zinc sulfide (ZnS) crystal is one of the important materials used to make the wide-spectrum infrared window. The ultrafast laser technology for manufacturing the nanopores with high aspect ratio provides an important approach to fabricate the photonic devices such as mid-infrared waveguide Fourier transform spectrometer etc. In this paper, a 40-times-demagnification ultrafast laser direct-writing system was built with a 4f system and a Gaussian-Bessel beam generated by a quartz axicon and a Yb:KGW laser source that operated at a wavelength of 1030 nm, a repetition rate of 100 kHz and a pulse width tunable from 223 fs to 20 ps. When the pulse energy was changed from 36 &mu;J to 63 &mu;J and the pulse duration was changed from 12.5 ps to 20 ps, the nanopore structure with a diameter of 80~320 nm was successfully written on the ZnS crystal. The surface morphology, diameter and depth of the nanopores were determined by FIB (Focused Ion Beams) ablation and SEM (Scanning Electron Microscopy) imaging. The influence of laser pulse energy and pulse width on the nanopores was studied. The results show that when the pulse width is 20 ps and the pulse energy is 48 &micro;J, the depth of a nanopore is about 270 &micro;m.<br/></div> Copyright &copy;2021 Chinese Optics. All rights reserved.
Number of references:33
Main heading:Scanning electron microscopy
Controlled terms:Aspect ratio - Cadmium sulfide - Fourier transform infrared spectroscopy - Gaussian beams - II-VI semiconductors - Ion beams - Morphology - Nanopores - Optical waveguides - Photonic devices  - Pulse repetition rate - Surface morphology - Ultrafast lasers - Zinc oxide
Uncontrolled terms:Bessel beam - Gaussian-bessel beam - Gaussians - High aspect ratio - High aspect ratio nanopore - Photonics devices - Pulse energies - Pulsewidths - Pulswidths - Zinc sulphide crystal
Classification code:711  Electromagnetic Waves - 712.1  Semiconducting Materials - 714.3  Waveguides - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 761  Nanotechnology - 801  Chemistry - 804  Chemical Products Generally - 804.2  Inorganic Compounds - 931.2  Physical Properties of Gases, Liquids and Solids - 932.1  High Energy Physics - 933  Solid State Physics - 951  Materials Science
Numerical data indexing:Energy 3.60E-05J to 6.30E-05J, Frequency 1.00E+05Hz, Size 1.03E-06m, Size 8.00E-08m to 3.20E-07m, Time 1.25E-11s to 2.00E-11s, Time 2.00E-11s, Time 2.23E-13s to 2.00E-11s
DOI:10.37188/CO.2020-0101
Funding details:  Number: 61775236, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2018YFB1107401, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:&#25910;&#31295;&#26085;&#26399;&#65306;2020-06-08&#65307;&#20462;&#35746;&#26085;&#26399;&#65306;2020-06-22 &#22522;&#37329;&#39033;&#30446;&#65306;&#22269;&#23478;&#37325;&#28857;&#30740;&#21457;&#35745;&#21010;&#65288;No. 2018YFB1107401&#65289;&#65307;&#22269;&#23478;&#33258;&#28982;&#31185;&#23398;&#22522;&#37329;&#65288;No. 61775236&#65289;&#36164;&#21161;&#39033;&#30446; Supported by National Key Research and Development Program (No. 2018YFB1107401); National Natural Science Foundation of China (No. 61775236)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 88>
 
Accession number:20211410183041
Title:Novel strategy for the enhancement of anti-counterfeiting ability of photochromic ceramics: Sm<sup>3+</sup> doped KSr<inf>2</inf>Nb<inf>5</inf>O<inf>15</inf> textured ceramics with anisotropic luminescence modulation behavior
Authors:Cao, Shuyao (1); Chen, Qian (1); Li, Yangping (1); Wu, Changying (2); Xu, Jie (1); Cheng, Guanghua (2, 3); Gao, Feng (1) 
Author affiliation:(1) State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an; 710072, China; (2) School of Electronics and Information, Northwestern Polytechnical University, Xi'an; Shaanxi; 710072, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China 
Corresponding author:Gao, Feng(gaofeng@nwpu.edu.cn)
Source title:Journal of the European Ceramic Society
Abbreviated source title:J. Eur. Ceram. Soc.
Volume:41
Issue:9
Issue date:August 2021
Publication year:2021
Pages:4924-4933
Language:English
ISSN:09552219
E-ISSN:1873619X
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">Sm<sup>3+</sup> doped KSr<inf>2</inf>Nb<inf>5</inf>O<inf>15</inf> (KSN-Sm) textured ceramics with anisotropic photochromic and luminescence modulation behaviors provided a new strategy for the enhancement of anti-counterfeiting ability. The KSN-Sm textured ceramics were fabricated by the tape casting technology, which exhibited obvious grain-orientation, with Lotgering factor f<inf>(00l)</inf> of 0.62. The textured sample possessed evident difference of reflectivity, photochromic, luminescent and luminescence modulation properties among various grain-orientated directions. The difference of luminescent emission intensity was over than 30 % and the luminescence modulation ratios &utri;R<inf>t</inf> are 75.3 % and 63.3 % along paralleled and vertical [00l] orientations, respectively. These optical anisotropies were attributed to the different refractive indexes, distributions of photochromic centers and energy transfer rates at various orientations. This work is hopeful to achieve the multidirectional data recording and enhancement of anti-counterfeiting ability of photochromic ceramics by the anisotropic properties of textured ceramics.<br/></div> &copy; 2021 Elsevier Ltd
Number of references:44
Main heading:Anisotropy
Controlled terms:Samarium compounds - Textures - Luminescence - Refractive index - Strontium compounds - Energy transfer - Modulation - Photochromism - Niobium compounds
Uncontrolled terms:Anti-counterfeiting - Emissions intensity - Grain orientation - Luminescence modulation - Luminescent emission - Modulation properties - Novel strategies - Photochromics - Tape casting technology - Textured ceramics
Classification code:741.1  Light/Optics - 931.2  Physical Properties of Gases, Liquids and Solids
Numerical data indexing:Percentage 3.00E+01%, Percentage 6.33E+01%, Percentage 7.53E+01%, Volume 0.00E00m3
DOI:10.1016/j.jeurceramsoc.2021.03.039
Funding details:  Number: 51961135301, Acronym: -, Sponsor: -;Number: 2019KW-054,2020KW-032, Acronym: -, Sponsor: -;Number: 51702259,52072301, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 3102019GHJD001,3102019MS0406, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;Number: B20028, Acronym: -, Sponsor: Higher Education Discipline Innovation Project;
Funding text:This work was supported by the China-Poland International Collaboration Fund of National Natural Science Foundation of China (No. 51961135301 ), National Natural Science Foundation of China (No. 51702259 , 52072301 ), the Fundamental Research Funds for the Central Universities (No. 3102019GHJD001 , 3102019MS0406 ), the International Cooperation Foundation of Shaanxi Province (No. 2019KW-054 , 2020KW-032 ), and the "111" Project (No. B20028 ). We would like to thank the Analytical & Testing Center of Northwestern Polytechnical University for the testing of SEM and Raman spectra.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 89>
 
Accession number:20210509857634
Title:On-line SERS detection of adenine in DNA based on the optofluidic in-fiber integrated GO/PDDA/Ag NPs
Authors:Gao, Danheng (1); Yang, Xinghua (1); Teng, Pingping (1); Kong, Depeng (2); Liu, Zhihai (1); Yang, Jun (1); Luo, Meng (1); Li, Zhanao (1); Wen, Xingyue (1); Yuan, Libo (1, 3); Li, Kang (4); Bowkett, Mark (4); Copner, Nigel (4); Wang, Xiaozhang (5) 
Author affiliation:(1) Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin; 150001, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanic, Chinese Academy of Sciences, Xi'an; 710119, China; (3) Photonics Research Center, Guilin University of Electronics Technology, Guilin; 541004, China; (4) Wireless & Optoelectronics Research & Innovation Centre, Faculty of Computing, Engineering & Science, University of South Wales, Wales; CF37 1DL, United Kingdom; (5) Xi'an Modern Control Technology Research Institute, Xi'an; 710065, China 
Corresponding author:Yang, Xinghua(yangxh@hrbeu.edu.cn)
Source title:Sensors and Actuators, B: Chemical
Abbreviated source title:Sens Actuators, B Chem
Volume:332
Issue date:April 1, 2021
Publication year:2021
Article number:129517
Language:English
ISSN:09254005
CODEN:SABCEB
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:In this paper, a novel type of in-fiber optofluidic Raman self-assembly graphene oxide (GO)/PDDA/Ag NPs SERS sensor for the adenine in DNA is proposed. The microstructured hollow fiber (MHF) has a channel and a suspended core in microscale, which allows the sample to flow into the fiber. Meanwhile, the GO/PDDA/Ag NPs SERS substrates are modified on the MHF core by chemical bond. When the sample is interacted with the evanescent field excited by the suspended core, the on-line SERS signals can be coupled back to the core and be detected. Here, we carry out on-line optofluidic detection on the adenine samples. The results show that the detection limit (LOD) of the samples of is about 1 &times; 10<sup>&minus;14</sup> M. The unwound DNA solution extracted from biological blood is injected into the MHF. Under the action of the hydrogen bond between PDDA with adenine, the adenine base in DNA is successfully detected and the interference of guanine, cytosine and thymine is eliminated. Significantly, this work provides an integrated self-assembled GO/PDDA/Ag NPs SERS adenine sensor in an optofluidic fiber. This rapid, convenient and sensitive Raman detection sensor of adenine in DNA is expected to have more potential applications in HIV, genetics and other fields.<br/> &copy; 2021 Elsevier B.V.
Number of references:38
Main heading:DNA
Controlled terms:Microstructure - Graphene - Substrates - Hydrogen bonds - Evanescent fields - Optical fibers
Uncontrolled terms:Detection limits - Detection sensors - DNA solutions - Hollow fiber - In-fiber - Optofluidic - Sers detections - SERS substrate
Classification code:461.2  Biological Materials and Tissue Engineering - 701  Electricity and Magnetism - 741.1.2  Fiber Optics - 761  Nanotechnology - 801.4  Physical Chemistry - 804  Chemical Products Generally - 951  Materials Science
DOI:10.1016/j.snb.2021.129517
Funding details:  Number: 2019GY-073, Acronym: -, Sponsor: -;Number: 11574061,61405043, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: F201405,LC2018026, Acronym: -, Sponsor: Natural Science Foundation of Heilongjiang Province;Number: 2018YFC1503703, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;Number: 3072019CF2502, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:National Natural Science Foundation of China (11574061, 61405043); National Key R&D Program of China (2018YFC1503703); Natural Science Foundation of Heilongjiang Province (LC2018026, F201405); Fundamental Research Funds for the Central Universities (3072019CF2502); the Key R&D Program of Shaanxi Province (2019GY-073).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 90>
 
Accession number:20214511135998
Title:A New Design of Large-format Streak Tube with Single-lens Focusing System    (Open Access)
Authors:Tian, Liping (1, 2); Shen, Lingbin (1); Chen, Lin (1); Li, Lili (2); Tian, Jinshou (2); Chen, Ping (2); Zhao, Wei (2) 
Author affiliation:(1) School of network and communication engineering, Jinling Institute of Technology, Hongjing Road, No.99, Nanjing; 211169, China; (2) Key Laboratory of of Transient Optics and Photonics, Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xinxi Road, No.17, Xi'an; 710119, China 
Source title:Measurement Science Review
Abbreviated source title:Meas. Sci. Rev.
Volume:21
Issue:6
Issue date:December 1, 2021
Publication year:2021
Pages:191-196
Language:English
E-ISSN:13358871
Document type:Journal article (JA)
Publisher:Sciendo
Abstract:<div data-language="eng" data-ev-field="abstract">Streak tubes with large-format and high spatial resolution are central to mm-spatial-resolved STIL detection system and hyperspectral resolved ICF experiment. In this paper, we established a large-format streak tube with a three-coaxial-cylindrical single-lens focusing system, a spherically curved photocathode and phosphor screen model in CST Particle Studio. The temporal and spatial resolution were calculated and mimicked based on the Monte-Carlo sampling method in static and dynamic mode. The simulated results show that the static spatial resolution reaches 50 lp/mm over the whole 50 mm effective photocathode length, and the physical temporal resolution is better than 45 ps. Furthermore, in dynamic working mode, the streak tube can achieve spatial resolution of 10 lp/mm and temporal resolution of 60 ps. The simulation results will be used to guide the design and production for large-format with high spatial resolution streak tube development.<br/></div> &copy; 2021 Liping Tian et al., published by Sciendo.
Number of references:14
Main heading:Photocathodes
Controlled terms:Signal to noise ratio - Image resolution - Tubes (components) - Monte Carlo methods - Focusing - Streak cameras
Uncontrolled terms:Detection system - Focusing system - High spatial resolution - HyperSpectral - Large-format - Single-lens focusing system - Spatial resolution - Streak tubes - Temporal resolution - Ultrafast detectors
Classification code:619.1  Pipe, Piping and Pipelines - 714.1  Electron Tubes - 716.1  Information Theory and Signal Processing - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment - 922.2  Mathematical Statistics
Numerical data indexing:Size 5.00E-02m, Time 4.50E-11s, Time 6.00E-11s
DOI:10.2478/msr-2021-0026
Funding details:  Number: SKLST202012, Acronym: -, Sponsor: -;Number: GJJSTD20190004, Acronym: -, Sponsor: -;Number: BK20190112, Acronym: -, Sponsor: Natural Science Foundation of Jiangsu Province;Number: jit-b-201814,jit-b-202012, Acronym: JIT, Sponsor: Jinling Institute of Technology;
Funding text:This study is supported by Scientific Instrument Developing Project of the Chinese Academy of Sciences (Grant No. GJJSTD20190004), the Nature Science Foundation of Jiangsu Province, China (Grant No. BK20190112), the Open Research Fund of State Key Laboratory of Transient Optics and Photonics (Grant No. SKLST202012), and the Ph.D. Project supported by the Jinling Institute of Technology (Grant No. jit-b-201814 and No. jit-b-202012).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 91>
 
Accession number:20211710256810
Title:Influence of Sm<sup>3+</sup> doping on the relaxation behaviors of KSr<inf>2</inf>Nb<inf>5</inf>O<inf>15</inf> ferroelectric ceramics and the luminescence modulation effect by polarization engineering
Authors:Cao, Shuyao (1); Chen, Qian (1); Li, Yangping (1); Wu, Changying (2); Feng, Xiaoying (1); Xu, Jie (1); Cheng, Guanghua (2, 3); Gao, Feng (1) 
Author affiliation:(1) State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an; 710072, China; (2) School of Electronics and Information, Northwestern Polytechnical University, Xi'an; Shaanxi; 710072, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China 
Corresponding author:Gao, Feng(gaofeng@nwpu.edu.cn)
Source title:Ceramics International
Abbreviated source title:Ceram Int
Volume:47
Issue:14
Issue date:July 15, 2021
Publication year:2021
Pages:20286-20297
Language:English
ISSN:02728842
CODEN:CINNDH
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">The luminescence modulation behavior of lanthanide ion doped materials possesses great potential for applications in sensing, display and anti-counterfeiting devices. Unlike traditional tuning methods for chemical compositions, novel rare-earth doped ferroelectric oxides exhibit attractive luminescence modulation effects via electric polarization engineering, and enrich the development of multifunctional devices. In this work, Sm<sup>3+</sup> doped KSr<inf>2</inf>Nb<inf>5</inf>O<inf>15</inf> ceramics with abundant ferroelectric and luminescent properties were synthesized. The samples show different relaxation behaviors and ferroelectric features upon chemical and structural factors caused by Sm<sup>3+</sup> doping, such as average ionic radii, local tolerance factors, and chemical bonds. After polarization at 20 kV/cm for 20 min, a considerable increase (~40%) in the luminescent emission intensity was obtained in 4 mol. % Sm<sup>3+</sup> doped KSr<inf>2</inf>Nb<inf>5</inf>O<inf>15</inf> ceramics. The related luminescence modulation mechanism was attributed to controlling the environmental symmetry around Sm<sup>3+</sup> by the electric polarization.<br/></div> &copy; 2021 Elsevier Ltd and Techna Group S.r.l.
Number of references:48
Main heading:Modulation
Controlled terms:Niobium compounds - Polarization - Samarium compounds - Strontium compounds - Display devices - Rare earths - Luminescence - Ferroelectric materials - Ferroelectricity
Uncontrolled terms:Anti-counterfeiting - Dielectric property (C) - Electric polarization - Ferroelectric property (C) - Ion-doped materials - Lanthanide ion - Luminescence modulation (author selected) - Modulation effects - Niobate (D) - Relaxation behaviors
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 708.1  Dielectric Materials - 722.2  Computer Peripheral Equipment - 741.1  Light/Optics - 804.2  Inorganic Compounds
Numerical data indexing:Amount of substance 4.00E+00mol, Electric field strength 2.00E+03V/m, Percentage 4.00E+01%, Time 1.20E+03s
DOI:10.1016/j.ceramint.2021.04.037
Funding details:  Number: 51961135301, Acronym: -, Sponsor: -;Number: 2020 KW-032,B20028, Acronym: -, Sponsor: -;Number: 52072301, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the China-Poland International Collaboration Fund of National Natural Science Foundation of China (No. 51961135301), National Natural Science Foundation of China (No. 52072301), the International Cooperation Foundation of Shaanxi Province (No. 2020 KW-032), the &lsquo;111&rsquo; Project (No. B20028). We would like to thank the Analytical & Testing Center of Northwestern Polytechnical University for the testing of SEM and Raman spectra.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 92>
 
Accession number:20211710255818
Title:Grain-Orientation dependence about luminescence modulation behavior upon electric polarization in Sm<sup>3+</sup> doped KSr<inf>2</inf>Nb<inf>5</inf>O<inf>15</inf> textured ceramics
Authors:Cao, Shuyao (1); Chen, Qian (1); Li, Yangping (1); Wu, Changying (2); Feng, Xiaoying (1); Xu, Jie (1); Cheng, Guanghua (2, 3); Gao, Feng (1) 
Author affiliation:(1) State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an; 710072, China; (2) School of Electronics and Information, Northwestern Polytechnical University, Xi'an; Shaanxi; 710072, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China 
Corresponding author:Gao, Feng(gaofeng@nwpu.edu.cn)
Source title:Materials Letters
Abbreviated source title:Mater Lett
Volume:295
Issue date:July 15, 2021
Publication year:2021
Article number:129866
Language:English
ISSN:0167577X
E-ISSN:18734979
CODEN:MLETDJ
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">Sm<sup>3+</sup> doped KSr<inf>2</inf>Nb<inf>5</inf>O<inf>15</inf> textured ceramics with grain-orientation were fabricated using tape casting technology. The influences of the grain orientation on the microstructures, dielectric and ferroelectric properties were characterized. Moreover, the samples possessed luminescence modulation behavior after polarization, which exhibited obvious grain-orientation dependence. A considerable modulation ratio of approximately 69% was obtained along the [00l] direction of textured ceramics, which was almost twice that of ceramics without grain orientation. This work provided a new strategy for the enhancement of luminescence modulation properties in rare-earth activator-doped ferroelectric oxides.<br/></div> &copy; 2021 Elsevier B.V.
Number of references:14
Main heading:Luminescence
Controlled terms:Rare earths - Modulation - Ferroelectric materials - Potassium compounds - Textures - Samarium compounds - Ferroelectricity - Niobium compounds - Polarization
Uncontrolled terms:Dielectric and ferroelectric properties - Electric polarization - Grain orientation - Microstructures properties - Modulation properties - Modulation ratio - Orientation dependence - Polarization-modulation - Tape casting technology - Textured ceramics
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 708.1  Dielectric Materials - 741.1  Light/Optics - 804.2  Inorganic Compounds
Numerical data indexing:Percentage 6.90E+01%, Volume 0.00E00m3
DOI:10.1016/j.matlet.2021.129866
Funding details:  Number: 51961135301, Acronym: -, Sponsor: -;Number: 2019KW-054,2020KW-032,B20028, Acronym: -, Sponsor: -;Number: 52072301, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported by the China-Poland International Collaboration Fund of National Natural Science Foundation of China (No. 51961135301 ), National Natural Science Foundation of China (No. 52072301 ), the International Cooperation Foundation of Shaanxi Province (No. 2019KW-054 , 2020KW-032 ), the &lsquo;111&rsquo; Project (No. B20028). We would like to thank the Analytical & Testing Center of Northwestern Polytechnical University for the PFM measurements.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 93>
 
Accession number:20210809969279
Title:A 4F optical diffuser system with spatial light modulators for image data augmentation
Authors:Li, Baopeng (1, 2, 3, 4); Ersoy, Okan K. (4); Ma, Caiwen (1); Pan, Zhibin (2); Wen, Wansha (1, 3); Song, Zongxi (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No.17 Xinxi Rd., Xi'an; 710119, China; (2) Xi'an Jiaotong University, No.28 Xianning W Rd., Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, No.19A Yuquan Rd., Beijing; 100049, China; (4) School of Electrical and Computer Engineering, Purdue University, 465 Northwestern Ave., West Lafayette; IN; 47906, United States 
Corresponding author:Pan, Zhibin(zbpan@mail.xjtu.edu.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:488
Issue date:June 1, 2021
Publication year:2021
Article number:126859
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:This paper proposes a novel image data augmentation method based on the 4F optical diffuser system with two spatial light modulators. The method combines data augmentation methods based on geometric transformations with optical phase diffuser, resulting in a system which is effective and easy-to-use. This method can be used in an all-optical machine learning system or in a hybrid digital-optical system, and its digital implementation can also be used in learning-based computer vision applications. The method was tested in image classification of MNIST dataset. It was demonstrated that the augmented dataset significantly improves the classification accuracy.<br/> &copy; 2021 Elsevier B.V.
Number of references:37
Main heading:Image classification
Controlled terms:Light modulators - Optical signal processing - Light modulation - Classification (of information) - Learning systems - Optical systems
Uncontrolled terms:Classification accuracy - Computer vision applications - Data augmentation - Digital implementation - Geometric transformations - Optical diffusers - Optical phase - Spatial light modulators
Classification code:716.1  Information Theory and Signal Processing - 723.2  Data Processing and Image Processing - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 903.1  Information Sources and Analysis
DOI:10.1016/j.optcom.2021.126859
Funding details:  Number: -, Acronym: -, Sponsor: Purdue University;Number: 61906186, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 1188000111,GFZX04014307, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;Number: 2018YFC0115304, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:Baopeng Li was supported by the CAS Scholarship for 17 months study at Purdue University. This work is supported by National Key Research and Development Program of China ( 2018YFC0115304 ); Youth Innovation Promotion Association of the Chinese Academy of Sciences ( 1188000111 ); Major Project of High-resolution Earth Observation System of China ( GFZX04014307 ); National Natural Science Foundation of China ( 61906186 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 94>
 
Accession number:20210409818635
Title:Extended focused imaging in microscopy using structure tensor and guided filtering
Authors:Ren, Zhenbo (1, 2); Guan, Peiyan (3); Lam, Edmund Y. (3); Zhao, Jianlin (1) 
Author affiliation:(1) MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an; 710129, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (3) Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong 
Corresponding author:Ren, Zhenbo(zbren@nwpu.edu.cn)
Source title:Optics and Lasers in Engineering
Abbreviated source title:Opt Lasers Eng
Volume:140
Issue date:May 2021
Publication year:2021
Article number:106549
Language:English
ISSN:01438166
CODEN:OLENDN
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:The limited depth-of-field (DOF) in optical microscopic imaging systems prevents them from capturing an entirely focused images when the imaged scene is thick and covers a wide range of depth. Specimens lying outside the DOF is defocused and thus blurred, hindering the subsequent observation and analysis. Extended focused imaging aims at yielding a single all-in-focus image by combining the in-focus information from a stack of partially focused images. In this paper, we present a new algorithm for digitally extending the low DOF of a microscopic imaging system. The method is based on the two-scale decomposition of an image into a base layer and a detail layer, both of which contain information of different scales. Then, with the structure tensor, which is uniquely advantageous for autofocusing multi-focal planes, as the focus measure, initial weight maps are generated. The guided filtering is then employed to optimize the weighted averaging scheme for the fusion of the base and detail layers. We examine the proposed algorithm under incoherent and coherent imaging modalities, i.e., bright-field microscopy and digital holographic microscopy. Qualitative and quantitative comparisons with the existing approaches are carried out using extensive experimental data. The results show the advantages and superior performance of the proposed scheme even in the presence of coherent noise.<br/> &copy; 2021 Elsevier Ltd
Number of references:49
Main heading:Microscopic examination
Controlled terms:Imaging systems - Tensors - Holography - Phase measurement
Uncontrolled terms:All-in-focus image - Bright-field microscopy - Coherent imaging - Digital holographic microscopy - Microscopic imaging - Quantitative comparison - Structure tensors - Weighted averaging
Classification code:743  Holography - 746  Imaging Techniques - 921.1  Algebra - 942.2  Electric Variables Measurements
DOI:10.1016/j.optlaseng.2021.106549
Funding details:  Number: SKLST202008, Acronym: -, Sponsor: -;Number: 61905197,61927810, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 310201911qd002, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:This work was in part supported by the National Natural Science Foundation of China (61905197, 61927810), the Fundamental Research Funds for the Central Universities (310201911qd002) and the Open Research Fund of State Key Laboratory of Transient Optics and Photonics (SKLST202008).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 95>
 
Accession number:20214111013822
Title:808 nm broad-area laser diodes designed for high efficiency at high-temperature operation    (Open Access)
Authors:Lan, Yu (1, 2); Yang, Guowen (1, 2, 3); Liu, Yuxian (1, 2); Zhao, Yuliang (1, 2); Wang, Zhenfu (1); Li, Te (1); Demir, Abdullah (4) 
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) Dogain Laser Technology (Suzhou) Co. Ltd, Suzhou; 215123, China; (4) Bilkent University, UNAM, Institute of Materials Science and Nanotechnology, ANKARA; 06800, Turkey 
Corresponding authors:Yang, Guowen(yangguowen@opt.ac.cn); Demir, Abdullah(abdullah.demir@unam.bilkent.edu.tr)
Source title:Semiconductor Science and Technology
Abbreviated source title:Semicond Sci Technol
Volume:36
Issue:10
Issue date:October 2021
Publication year:2021
Article number:105012
Language:English
ISSN:02681242
E-ISSN:13616641
CODEN:SSTEET
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">Semiconductor lasers with high power conversion efficiency (PCE) and output power are heavily investigated driven by more energy-efficient commercial applications. In this paper, an asymmetric broad area laser (A-BAL) design is studied and compared with a conventional symmetric broad area laser (S-BAL) design for 808 nm single emitter laser diodes. We present a comparative theoretical and experimental investigation by studying the thermal effects on the laser parameters. The output characteristics and efficiency loss paths for the designs were analyzed. The leakage of carriers was identified as the primary source of the PCE reduction with temperature. Suppressing this leakage by optimization of the A-BAL design, a record continuous-wave PCE of 68% at 25 C and 60.4% at 75 C were achieved for a single emitter laser with 10 W output power. These devices deliver high efficiency at high temperatures with reliable operation achieving 2000 h of an accelerated aging lifetime without failures.<br/></div> &copy; 2021 IOP Publishing Ltd.
Number of references:38
Main heading:Semiconductor lasers
Controlled terms:Energy efficiency - Power semiconductor diodes - High power lasers - High temperature operations
Uncontrolled terms:808 nm - Broad-area laser diode - Broad-area lasers - High power - High-temperature operation - Higher efficiency - Laser designs - Output power - Power conversion efficiencies - Single emitter lasers
Classification code:525.2  Energy Conservation - 714.2  Semiconductor Devices and Integrated Circuits - 744.1  Lasers, General - 744.4.1  Semiconductor Lasers
Numerical data indexing:Percentage 6.04E+01%, Percentage 6.80E+01%, Power 1.00E+01W, Size 8.08E-07m, Time 7.20E+06s
DOI:10.1088/1361-6641/ac2160
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Green
 
<RECORD 96>
 
Accession number:20210509874607
Title:Modeling and simulation analysis of a non-line-of-sight infrared laser imaging system
Authors:Tan, Jingjing (1, 2); Su, Xiuqin (1); Wang, Kaidi (1, 2); Wu, Jingyao (1, 2) 
Author affiliation:(1) Cas Key Laboratory of Space Precision Measurement, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 17 Xinxi Road, Xian, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing; 100049, China 
Corresponding author:Su, Xiuqin(suxiuqin@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117610M
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Non-line-of-sight (NLOS) imaging technology is to &acirc;&euro; see' the target out of sight, such as an object around a corner or hidden by some shelters. However, due to constraints of device definition and computing load, NLOS system is usually expensive and requires hidden objects with special material and simple shape. Besides, imaging space of system is limited. We perform a series of simulation with 1550nm infrared laser to expand the application field and improve the performance of NLOS system. Based on math and physical properties, main experimental components are modeled and data acquisition process is completed first. Then, the ellipsoid inversion algorithm is used to reconstruct the hidden space and imaging results are obtained. Finally, multiple series of system parameters are set and their influence on imaging results is analyzed. Results demonstrate that echo signal intensity after multiple reflections provides adequate information to reconstruct the geometry of a hidden object. However, the number of laser scanning position, resolution of detector, voxel division and location of the scanning area will all have a critical influence on NLOS imaging results.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:16
Main heading:Data acquisition
Controlled terms:Imaging systems - Infrared lasers
Uncontrolled terms:Acquisition process - Application fields - Imaging technology - Inversion algorithm - Laser scanning - Model and simulation - Multiple reflections - Nonline of sight
Classification code:723.2  Data Processing and Image Processing - 744.1  Lasers, General - 746  Imaging Techniques
Numerical data indexing:Size 1.55e-06m
DOI:10.1117/12.2585336
Funding details:  Number: GQRC-19-19, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This research was funded by Strategic High Technology Innovation Funding of Chinese Academy of Sciences (GQRC-19-19).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 97>
 
Accession number:20211810277558
Title:High-power operation and lateral divergence angle reduction of broad-area laser diodes at 976 nm
Authors:Liu, Yuxian (1, 2); Yang, Guowen (1, 2, 3); Wang, Zhenfu (1); Li, Te (1); Tang, Song (3); Zhao, Yuliang (1, 2); Lan, Yu (1, 2); Demir, Abdullah (4) 
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) Dogain Laser Technology (Suzhou) Co., Ltd., Suzhou; 215123, China; (4) Bilkent University, UNAM - Institute of Materials Science and Nanotechnology, Ankara; 06800, Turkey 
Corresponding author:Yang, Guowen
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:141
Issue date:September 2021
Publication year:2021
Article number:107145
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">Broad-area diode lasers with high output power and low lateral divergence angle are highly desired for extensive scientific and industrial applications. Here, we report on the epitaxial design for higher output power and a flared waveguide design for reduced divergence, which leads to high power operation with a low lateral divergence angle. A vertically asymmetric epitaxial structure was employed and optimized for low internal optical loss and high efficiency to realize high output power operation. Using a flared waveguide design, the lateral divergence angle was efficiently reduced by decreasing the number of high-order lateral optical modes significantly. The flared waveguide design introduces a smooth modification of the ridge width along the cavity without deteriorating laser performance. Based on the optimized epitaxial and waveguide design, we scaled the waveguide width to realize high continuous-wave power of 34.5 W at 25 &deg;C. A low lateral divergence angle of 8&deg; and high power conversion efficiency of 60% were achieved at the operating power level of 25 W. The life test data (30 A at 45 &deg;C for 39 units, 0 failures in 1000 h) demonstrated reliable operation illustrating the efficient design for reduced lateral divergence angle and high operating power.<br/></div> &copy; 2021 Elsevier Ltd
Number of references:37
Main heading:Semiconductor lasers
Controlled terms:Semiconductor diodes - Waveguides - Wave power - Efficiency
Uncontrolled terms:976 nm - Diode-laser - Divergence angle - Flared waveguide - High brightness - High output power - High power - Higher efficiency - Low divergence angle - Waveguide design
Classification code:615.6  Wave Energy - 714.2  Semiconductor Devices and Integrated Circuits - 714.3  Waveguides - 744.4.1  Semiconductor Lasers - 913.1  Production Engineering
Numerical data indexing:Electric current 3.00E+01A, Percentage 6.00E+01%, Power 2.50E+01W, Power 3.45E+01W, Size 9.76E-07m, Temperature 2.98E+02K, Temperature 3.18E+02K, Time 3.60E+06s
DOI:10.1016/j.optlastec.2021.107145
Funding text:This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 98>
 
Accession number:20221612005096
Title:High performance parametric spectro-temporal analyzer assisted by a soliton microcomb
Authors:Hu, Hao (1); Yang, Ningning (1); Wang, Weiqiang (2, 3); Chen, Liao (1); Zhang, Chi (1); Zhang, Wenfu (2); Zhang, Xinliang (1) 
Author affiliation:(1) Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan; 430074, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Asia Communications and Photonics Conference, ACP
Abbreviated source title:Asia Commun. Photonics Conf.
Volume:2021-October
Part number:1 of 1
Issue title:2021 Asia Communications and Photonics Conference, ACP 2021 - Proceedings
Issue date:2021
Publication year:2021
Article number:T2I.2
Language:English
ISSN:2162108X
ISBN-13:9781957171005
Document type:Conference article (CA)
Conference name:2021 Asia Communications and Photonics Conference, ACP 2021
Conference date:October 24, 2021  -  October 27, 2021
Conference location:Shanghai, China
Conference code:178242
Sponsor:CIC; COS; IEEE Photonics Society; Optica; SPIE
Publisher:Optica Publishing Group (formerly OSA)
Abstract:<div data-language="eng" data-ev-field="abstract">We experimentally demonstrated a high performance parametric spectro-temporal analyzer. Assisted by a soliton microcomb, it achieved a resolution of 4 pm, a bandwidth of 13 nm and the tunable frame rate from kHz to MHz.<br/></div> &copy; Optica Publishing Group 2021
Number of references:10
Uncontrolled terms:Frame-rate - Microcombs - Performance - Tunables
Numerical data indexing:Size 1.30E-08m, Size 4.00E-12m
Funding details:  Number: 61505060,61631166003,61675081,617 35006,61927817,62005090, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Acknowledgement: The work was supported by the National Natural Science Foundation of China (61927817, 617 35006, 62005090, 61631166003, 61675081, 61505060).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 99>
 
Accession number:20204109338340
Title:Low loss and polarization-insensitive coupling length for a terahertz fiber directional coupler with symmetric dual-suspended core structure
Authors:Zhu, Yuan-Feng (1, 2, 3); Huang, Xu (1); Ke, Qiang (1); Liu, Guiqiang (1); Rao, Chun-Fang (1); Kong, Depeng (4); Mei, Sen (4); Liu, Yunqi (2); Wang, Hua (5) 
Author affiliation:(1) The School of Physics and Communication Electronics, Jiangxi Normal University, Nanchang, Jiangxi; 330022, China; (2) The Key Lab of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai; 200444, China; (3) Key Laboratory of Optoelectronic and Telecommunication of Jiangxi Province, Nanchang, Jiangxi; 330022, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shanxi Province; 710119, China; (5) State Grid Jiangxi Electric Power Corporation, Information and Communication Branch, Nanchang, China 
Corresponding author:Ke, Qiang(keqiang@jxnu.edu.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:480
Issue date:February 1, 2021
Publication year:2021
Article number:126497
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier B.V., Netherlands
Abstract:In this work, a terahertz (THz) fiber directional coupler with a symmetric dual-suspended core structure has been proposed for realizing low loss and polarization-insensitive coupling length in the THz frequency region. The fiber core of the directional coupler consists of two round solid dielectric rods supported by two intersecting thin dielectric layers. Numerical simulations performed using the full-vector finite element method show that a short polarization-independent coupling length can be obtained by adjusting the geometric parameters of the fiber. Moreover, a low-loss THz fiber directional coupling performance can also be achieved at a central frequency of 1.00-THz and approximately 0.16 THz of bandwidth. For example, a coupler with a length of 0.421 cm has a transmission loss of 0.30 dB and 0.26 dB for the x- and y-polarization modes, respectively.<br/> &copy; 2020
Number of references:31
Main heading:Fibers
Controlled terms:Polarization - Numerical methods - Dielectric materials - Directional couplers - Wave transmission
Uncontrolled terms:Directional coupling - Fiber directional coupler - Full vector finite element methods - Polarization independent coupling - Polarization modes - Polarization-insensitive - Thin dielectric layer - Transmission loss
Classification code:708.1  Dielectric Materials - 714.3  Waveguides - 921.6  Numerical Methods
Numerical data indexing:Decibel 2.60e-01dB, Decibel 3.00e-01dB, Frequency 1.00e+12Hz, Frequency 1.60e+11Hz, Size 4.21e-03m
DOI:10.1016/j.optcom.2020.126497
Funding details:  Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: GJJ170185,GJJ170189, Acronym: -, Sponsor: -;Number: 61875117,12064016, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This work was supported in part by the Natural National Science Foundation of China (NSFC) under Grant 61875117 , 12064016 and the Science and Technology Research Project of Jiangxi Provincial Education Department, China under GJJ170185 , GJJ170189 .
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 100>
 
Accession number:20212510520186
Title:Aperture-averaged scintillation index and fade statistics in weak oceanic turbulence
Authors:Wang, Hao (1, 2); Kang, Fu-Zeng (1); Wang, Xuan (3, 4); Zhao, Wei (1); Sun, Shu-Wei (1, 2) 
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) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China; (4) Songshan Lake Materials Laboratory, Dongguan; 523808, China 
Corresponding authors:Kang, Fu-Zeng(kangfuzeng@opt.ac.cn); Wang, Xuan(xw@iphy.ac.cn)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:30
Issue:6
Issue date:May 2021
Publication year:2021
Article number:064207
Language:English
ISSN:16741056
E-ISSN:20583834
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">With the rapid demand for underwater optical communication (UOC), studies of UOC degradation by oceanic turbulence have attached increasing attention worldwide and become a research hot-spot in recent years. Previous studies used a simplified and inaccurate oceanic turbulence spectrum, in which the eddy diffusivity ratio between temperature and salinity is assumed to be unity and the outer scale of turbulence is assumed to be infinite. However, both assumptions are not true in most of the actual marine environments. In this paper, based on the Rytov theory in weak turbulence, we derive analytical expressions of "the aperture-averaged scintillation index"(SI) for both plane and spherical waves, which can clearly demonstrate how SI is influenced by several key factors in UOC. Then, typical fade statistics of the UOC system in weak turbulence is discussed including the probability of fade, the expected number of fades per time, the mean fade time, signal-to-noise ratio and bit error rate. Our results show that spherical wave is preferable in the UOC system in weak turbulence compared to plane wave, and the aperture-averaged effect has a significant impact on UOC system's performance. Our results can be used to determine those key parameters for designing the UOC system over reasonable ranges.<br/></div> &copy; 2021 Chinese Physical Society and IOP Publishing Ltd.
Number of references:28
Main heading:Turbulence
Controlled terms:Signal to noise ratio - Error statistics - Bit error rate - Scintillation - Optical communication - Underwater optical wireless communication
Uncontrolled terms:Analytical expressions - Eddy Diffusivities - Marine environment - Oceanic turbulence - Scintillation index - Spherical waves - System's performance - Underwater optical communications
Classification code:675  Marine Engineering - 716.1  Information Theory and Signal Processing - 717.1  Optical Communication Systems - 723.1  Computer Programming - 741.1  Light/Optics - 922.2  Mathematical Statistics
DOI:10.1088/1674-1056/abd756
Funding details:  Number: -, Acronym: XIOPM, Sponsor: Xi'an Institute of Optics and Precision Mechanics;
Funding text:Project supported by the fund from Xi'an Institute of Optics and Precision Mechanics.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 101>
 
Accession number:20212410502905
Title:Lidar-radar for underwater target detection using a modulated sub-nanosecond Q-switched laser
Authors:Li, Guangying (1, 2); Zhou, Qiang (3); Xu, Guoquan (4); Wang, Xing (1); Han, Wenjie (5); Wang, Jiang (3); Zhang, Guodong (3); Zhang, Yifan (4); Yuan, Zhi'an (4); Song, Sijia (5); Gu, Shangtai (4); Chen, Fubin (4); Xu, Ke (4); Tian, Jinshou (1); Wan, Jianwei (4); Xie, Xiaoping (1, 2); Cheng, Guanghua (3) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) School of Future Technology, University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University, Xi'an; 710072, China; (4) College of Electronic Science and Technology, National University of Defense Technology, Changsha; 410073, China; (5) The 27th Research Institute of China Electronics Technology Group Corporation, Zhengzhou; 450047, China 
Corresponding author:Xie, Xiaoping(xxp@opt.ac.cn)
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:142
Issue date:October 2021
Publication year:2021
Article number:107234
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">Here we report on a modulated sub-nanosecond lidar-radar for underwater target detection. The modulated laser source is consisted of a 1064 nm master oscillator power amplifier (MOPA) and a frequency-doubling module, outputting pulse energy of 178.1 mJ at 1064 nm with 0.76 ns pulse duration and 87.6 mJ at 532 nm. By using a Fabry&ndash;P&eacute;rot cavity containing a KTP crystal and two reflectors, the 532 nm laser pulse is modulated into the burst mode with a repetition rate of 500 MHz. A streak tube camera is used as the signal receiving apparatus. An underwater target detection experiment has been carried out. The results indicate that this lidar-radar could emit a stable and powerful modulated signal, which greatly increases the underwater detection range. The cooperation of the streak tube imaging and modulated laser source for underwater target detection experiments is the first attempt in this field. The clear 3-D and 4-D images of the target underwater across 20 m are obtained in the experiments and the spatial resolution of 9 mm can be achieved.<br/></div> &copy; 2021
Number of references:40
Main heading:Optical radar
Controlled terms:Underwater acoustics - Frequency doublers - Pulse repetition rate - Q switched lasers - Q switching - Tracking radar - Power amplifiers
Uncontrolled terms:1064 nm - Detection experiments - Fabry&ndash;perot cavity modulating - Laser sources - Lidar-radar - Modulated lasers - Streak tubes - Sub nanoseconds - Sub-nanosecond laser - Underwater target detection
Classification code:713.1  Amplifiers - 713.5  Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 716.2  Radar Systems and Equipment - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 744.8  Laser Beam Interactions - 751.1  Acoustic Waves
Numerical data indexing:Energy 1.781E-01J, Energy 8.76E-02J, Frequency 5.00E+08Hz, Size 1.064E-06m, Size 2.00E+01m, Size 5.32E-07m, Size 9.00E-03m, Time 7.60E-10s
DOI:10.1016/j.optlastec.2021.107234
Funding details:  Number: 2018YFB1107401, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:This work was supported by the National Key Research and Development Program [grant number 2018YFB1107401 ].
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 102>
 
Accession number:20210910003209
Title:Tumor imaging of a novel Ho<sup>3+</sup>-based biocompatible NIR fluorescent fluoride nanoparticle
Authors:Fan, Q. (1, 2); Zhang, G.W. (4); Peng, B. (1, 3) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an; Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences (UCAS), Beijing; 100049, China; (3) Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Zhejiang Fountain Aptitude Technology Inc., Hangzhou; Zhejiang; 310051, China 
Corresponding author:Peng, B.(bpeng@opt.ac.cn)
Source title:Journal of Luminescence
Abbreviated source title:J Lumin
Volume:235
Issue date:July 2021
Publication year:2021
Article number:118007
Language:English
ISSN:00222313
CODEN:JLUMA8
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:Cancer has become the leading cause of death for its high incidence and mortality. Early diagnosis and treatment are essential for the inhibition of tumor growth. In this work, A biocompatible, nontoxic, near-infrared fluorescent tumor targeting nanoparticle KHLF(K<inf>5</inf>HoLi<inf>2</inf>F<inf>10</inf>) was prepared by a delicate method for the early diagnosis of tumor. The surface functionalization of the nanoparticle endows it with good water solubility and biocompatibility. Covalent binding to folic acid provides it with the ability to target HeLa cells. After modification, this nanoparticle can still maintain high fluorescence intensity and it can be detected in 2 cm thick pork tissue. We carried out biodistribution imaging, organs imaging and tumor targeting imaging experiments to characterize its imaging ability in vivo. The results show that this nanoparticle could accurately accumulate in HeLa tumor and generate significant fluorescence signal, which confirms the nanoparticle has great potential as a efficient biocompatible fluorescent contrast agent for tumor diagnosis.<br/> &copy; 2021 Elsevier B.V.
Number of references:63
Main heading:Nanoparticles
Controlled terms:Diagnosis - Fluorescence - Tumors - Biocompatibility - Infrared devices - Lanthanum compounds - Fluorine compounds
Uncontrolled terms:Fluorescence intensities - Fluorescence signals - Fluorescent contrast agents - Fluoride nanoparticles - Good water-solubility - Inhibition of tumor growth - Near-infrared fluorescent - Surface Functionalization
Classification code:461.2  Biological Materials and Tissue Engineering - 461.6  Medicine and Pharmacology - 461.9.1  Immunology - 741.1  Light/Optics - 761  Nanotechnology - 933  Solid State Physics
Numerical data indexing:Size 2.00e-02m
DOI:10.1016/j.jlumin.2021.118007
Funding details:  Number: -, Acronym: XIOPM, Sponsor: Xi'an Institute of Optics and Precision Mechanics;Number: -, Acronym: UCAS, Sponsor: University of Chinese Academy of Sciences;
Funding text:The authors would like to thank the Advanced optoelectronic and biomaterial laboratory of Xi'an Institute of Optics and precision machinery and University of Chinese Academy of Sciences.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 103>
 
Accession number:20212510518780
Title:Two-dimensional optical gap solitons and vortices in a coherent atomic ensemble loaded on optical lattices
Authors:Chen, Zhiming (1, 2, 3); Zeng, Jianhua (2) 
Author affiliation:(1) State Key Laboratory of Nuclear Resources and Environment & School of Science, East China University of Technology, Nanchang; 330013, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (3) Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan; 250358, China 
Corresponding author:Zeng, Jianhua(zengjh@opt.ac.cn)
Source title:Communications in Nonlinear Science and Numerical Simulation
Abbreviated source title:Comm. Nonlinear Sci. Numer. Simul.
Volume:102
Issue date:November 2021
Publication year:2021
Article number:105911
Language:English
ISSN:10075704
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">Coherent atomic systems, e.g., resonantly cold atomic gases within which electromagnetically induced transparency (EIT) operates, have recently received great attention, because of their remarkable scientific properties and pivotal implications. Light behavior in such systems governed by various potentials is a new and interesting research focus, but missing literally report on two-dimensional (2D) localized gap modes in coherent atomic systems loaded on optical lattices. We survey such issue in a coherent atomic gas inside where the EIT turns on, trapped by 2D optical lattices&mdash;constituted by counter-propagating far-detuned Stark laser fields, in the framework of nonlinear Schr&ouml;dinger equation derived from Maxwell-Bloch equations. Using the linear stability analysis and direct perturbed evolution we address the formation, property, and stability of 2D localized gap modes of two types, gap solitons and gap vortices, in forbidden band gaps of the underlying linear Bloch-wave spectrum. The former mode is fundamental gap solitons, and the latter belongs to higher-order gap solitons with embedded topological charge. Our results are helpful not only for in-depth understanding of soliton dynamics in coherent atomic ensemble loaded on periodic potentials, but also for laying the groundwork for forthcoming applications in optical communications and quantum information processing.<br/></div> &copy; 2021 Elsevier B.V.
Number of references:67
Main heading:Optical lattices
Controlled terms:Energy gap - Nonlinear optics - Solitons - Vortex flow - Crystal lattices - Gases - Linear stability analysis - Nonlinear equations - Optical materials - Quantum optics  - Optical communication - Atoms - Transparency - Maxwell equations
Uncontrolled terms:Atomic ensemble - Atomic system - Electromagnetically-induced transparency - Gap soliton - Gap vortex - Kerr nonlinearity - Kerrnonlinearities - Optical gap soliton and vortex - Optical- - Two-dimensional
Classification code:631.1  Fluid Flow, General - 701.1  Electricity: Basic Concepts and Phenomena - 701.2  Magnetism: Basic Concepts and Phenomena - 717.1  Optical Communication Systems - 741.1  Light/Optics - 741.1.1  Nonlinear Optics - 741.3  Optical Devices and Systems - 744.8  Laser Beam Interactions - 921  Mathematics - 921.2  Calculus - 931.3  Atomic and Molecular Physics - 931.4  Quantum Theory; Quantum Mechanics - 933.1.1  Crystal Lattice
DOI:10.1016/j.cnsns.2021.105911
Funding details:  Number: DHBK2016118, Acronym: -, Sponsor: -;Number: 11704066,12074063,12074423, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 20202BABL211013, Acronym: -, Sponsor: Natural Science Foundation of Jiangsu Province;Number: GJJ160576,GJJ180378, Acronym: -, Sponsor: Education Department of Jiangxi Province;
Funding text:This work was supported by the National Natural Science Foundation of China (Grant Nos. 11704066 , 12074423 , and 12074063 ), Jiangxi Provincial Natural Science Foundation (Grant No. 20202BABL211013), Science and Technology Project of Jiangxi Provincial Education Department (Grant Nos. GJJ160576 and GJJ180378), and East China University of Technology Research Foundation for Advanced Talents (Grant No. DHBK2016118).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 104>
 
Accession number:20220211438097
Title:Large field of view 3D detection with a bionic curved compound-eye camera
Authors:Liu, Jinheng (1, 2); Zhang, Yuanjie (1, 2); Xu, Huangrong (1, 2); Yu, Weixing (1, 2) 
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, No.17, Xinxi Road, Xian; 710119, China; (2) Center of Mechanics Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12065
Part number:1 of 1
Issue title:AOPC 2021: Optical Sensing and Imaging Technology
Issue date:2021
Publication year:2021
Article number:120651H
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650053
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Optical Sensing and Imaging Technology, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175876
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">In the bionic curved compound-eye camera (BCCEC) we have invented, the overlapping field of view (FOV) among the ommatidia makes 3D detection possible. In this work, we analyzed the overlapping FOV in BCCEC in detail to prove its potential in 3D detection and designed a new experiment to test its performance. In that the FOVs of multiple ommatidia in BCCEC overlap each other, the FOV of a single ommatidium is used as a representative analysis. The relationship between the overlapping ratio of FOV and the object distance is quantitatively calculated. The results show that more than 95% of the FOV can be 3D reconstructed when the object distance exceeds 32 cm. Next, in order to realize the automatic calibration of all ommatidia, ommatidia are numbered and an addressing algorithm based on the number information of ommatidia is designed, which can be used to determine the adjacent ommatidia of any ommatidium so as to acquire the ommatidia pairs that need to be calibrated. Then, since the aperture of ommatidium is relatively small and it is difficult to accurately align, a new 3D detection experiment is designed. The laser rangefinder is fixed, the black paper is used to block the laser and the formed light spot is used as the detection target. The experimental results show that 3D detection can be performed in the whole FOV of BCCEC. The BCCEC can obtain multi-dimensional information in a large FOV, and it have greater application potential in obstacle avoidance and navigation.<br/></div> &copy; 2021 SPIE.
Number of references:5
Main heading:Bionics
Controlled terms:Cameras - Range finders
Uncontrolled terms:3d detection - Automatic calibration - Compound eye - Compound-eye camera - Field of views - Large field of views - Number information - Object distance - Overlapping ratio - Performance
Classification code:461.1  Biomedical Engineering - 742.2  Photographic Equipment - 943.1  Mechanical Instruments
Numerical data indexing:Percentage 9.50E+01%, Size 3.20E-01m
DOI:10.1117/12.2605594
Funding details:  Number: 61975231, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The authors would like to thank the Natural Science Foundation of China (No. 61975231) for financial support.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 105>
 
Accession number:20210509874606
Title:Analysis on effect of filling glue between the frame and lens with small aperture
Authors:Song, Yang (1); Ye, Jing (1, 2); Chai, Wenyi (1); Chu, Nanqing (1, 2); Xu, Yang (1); Hu, Yongming (1) 
Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Hu, Yongming(huyongming@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117610L
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:There are different kinds of mirror in the space instrument. Sometimes, engineers use filling glue to fill the small gap of the lens and its frame. Thus the structure may be more stable. However, this kind of method could also bring some new problems. Because of different thermal expansion coefficient of the lens and frame, the thermal deformation may be different during the temperature change, which will affect the surface accuracy of the lens and the vibration response. The thickness of glue block and the distributed form of the glue are the key factors. The paper focused on these factors and did some simulations to find out how these factors affect the surface accuracy and fundamental frequency. Then, the paper gave some proposals on this issue.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:7
Main heading:Glues
Controlled terms:Filling - Gluing - Thermal expansion
Uncontrolled terms:Fundamental frequencies - Small aperture - Space instrument - Surface accuracy - Temperature changes - Thermal deformation - Thermal expansion coefficients - Vibration response
Classification code:641.1  Thermodynamics - 691.2  Materials Handling Methods - 951  Materials Science
DOI:10.1117/12.2584978
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 106>
 
Accession number:20211910343214
Title:Research on Ray Tracing Algorithm and Acceleration Techniques using KD-tree
Authors:Zhou, Jia (1); Wen, Desheng (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Cas, Xi'an; 710119, China 
Source title:2021 IEEE 6th International Conference on Intelligent Computing and Signal Processing, ICSP 2021
Abbreviated source title:IEEE Int. Conf. Intell. Comput. Signal Process., ICSP
Part number:1 of 1
Issue title:2021 IEEE 6th International Conference on Intelligent Computing and Signal Processing, ICSP 2021
Issue date:April 9, 2021
Publication year:2021
Pages:107-110
Article number:9409001
Language:English
ISBN-13:9780738143705
Document type:Conference article (CA)
Conference name:6th IEEE International Conference on Intelligent Computing and Signal Processing, ICSP 2021
Conference date:April 9, 2021  -  April 11, 2021
Conference location:Xi'an, China
Conference code:168663
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">In the field of computer graphics, ray tracing algorithm is a kind of algorithm that can realize global illumination. Using the parallel computing power of GPU to accelerate ray tracing is one of the research hotpots at present. Based on the principle of ray tracing, this paper focuses on analyzing the two major problems of ray tracing algorithm acceleration research. One is the data structure problem, the other is the implementation of traversal algorithm on GPU. Based on the summary of the existing research, this paper discusses the derivation of the intersection of ray and surface element, compares various data structures, and analyzes the traversal algorithm based on KD-tree on GPU.<br/></div> &copy; 2021 IEEE.
Number of references:11
Main heading:Graphics processing unit
Controlled terms:Data structures - Computing power - Ray tracing - Trees (mathematics)
Uncontrolled terms:Acceleration technique - Global illumination - K-d tree - Parallel com- puting - Ray-tracing algorithm - Surface elements - Traversal algorithms
Classification code:714.2  Semiconductor Devices and Integrated Circuits - 721.3  Computer Circuits - 722.2  Computer Peripheral Equipment - 722.4  Digital Computers and Systems - 723  Computer Software, Data Handling and Applications - 723.2  Data Processing and Image Processing - 741.1  Light/Optics - 921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory
DOI:10.1109/ICSP51882.2021.9409001
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 107>
 
Accession number:20210509874609
Title:A new type of unitized design for the structure of a space camera using topology optimization
Authors:Ye, Jing (1); Song, Yang (2); Duan, Yongqiang (2); Hu, Yongming (2); Hu, Bin (1) 
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) Xian Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian; 710119, China 
Corresponding author:Ye, Jing(yejing@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117610O
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Mechanical structure, of which a trade-off between weight and strength has always been considered primely, is important for a space camera as a hub for other assemblies such as optics parts, electronic parts, etc. Traditionally the space camera is composed of a nearly line-up of arrangements containing different units, which is easy to assemble and manufacture, however, not a good type for mechanical properties due to the cantilever structure. We present a new type of unitized design for the structure of the space camera, which unite the tube and the electric cabinet as one unit, with the PCBs (Printed Circuit Boards) surrounded. The main frame is optimized by using topology optimization, improving the characteristic of the structure. The maneuverability has also been considered. Compared with some traditional type, the new type proved to be lighter and more compact, which is beneficial to the mechanical properties and the cost control of satellite launching.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:6
Main heading:Shape optimization
Controlled terms:Cameras - Economic and social effects - Printed circuit boards - Topology
Uncontrolled terms:Cantilever structures - Cost controls - Electronic parts - Main-frames - Mechanical structures - Satellite launching - Space cameras - Trade off
Classification code:742.2  Photographic Equipment - 921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory - 921.5  Optimization Techniques - 971  Social Sciences
DOI:10.1117/12.2586549
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 108>
 
Accession number:20220211437993
Title:Design of 1550nm adjustable laser lighting source
Authors:Mei, Chao (1); Chang, Sansan (1); Gao, Bo (1); Yi, Bo (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12065
Part number:1 of 1
Issue title:AOPC 2021: Optical Sensing and Imaging Technology
Issue date:2021
Publication year:2021
Article number:1206546
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650053
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Optical Sensing and Imaging Technology, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175876
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Shortwave laser is more and more widely used in gated imaging, tracking and pointing, communication and other fields. For the requirement of 1550nm high power laser source, The paper analyzes the realization way, and realized the 1550nm high power laser lighting source. We use multichannel semiconductor laser coupling to realize the high-power light source, and uses fiber coupling to realize the uniform spot. On this basis, an extended collimator is designed, which achieves 10 times of high-power The beam divergence angle can reach 9 mrad to 90 mrad, and the RMS value can be less than 1/4 of the wavelength at each magnification of the wave phase difference, which can meet the needs of engineering application.<br/></div> &copy; 2021 SPIE.
Number of references:6
Main heading:Optical design
Controlled terms:High power lasers - Semiconductor lasers
Uncontrolled terms:1550nm - Gated imaging - High power - High power laser source - High-power lasers - Imaging tracking - Lighting source - Multi channel - Paper analysis - Tracking and pointing
Classification code:741.1  Light/Optics - 744.1  Lasers, General - 744.4.1  Semiconductor Lasers
Numerical data indexing:Absorbed dose 9.00E-05Gy to 9.00E-04Gy, Size 1.55E-06m
DOI:10.1117/12.2599777
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 109>
 
Accession number:20211210107681
Title:Extraordinary Fast Forward and Backward Light in Transparent Non-Hermitian Systems
Authors:Zhang, Lingxuan (1); Ying, Lei (2); Ge, Li (3, 4); Zhao, Wei (1); Zhang, Wenfu (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) Interdisciplinary Center for Quantum Information and Department of Physics, Zhejiang University, Hangzhou; 310027, China; (3) Department of Physics and Astronomy, College of Staten Island, CUNY, Staten Island, New York; 10314, United States; (4) The Graduate Center, CUNY, New York; NY; 10016, United States 
Corresponding authors:Zhang, Wenfu(wfuzhang@opt.ac.cn); Ge, Li(li.ge@csi.cuny.edu)
Source title:Laser and Photonics Reviews
Abbreviated source title:Laser Photon. Rev.
Volume:15
Issue:5
Issue date:May 2021
Publication year:2021
Article number:2000204
Language:English
ISSN:18638880
E-ISSN:18638899
Document type:Journal article (JA)
Publisher:John Wiley and Sons Inc
Abstract:<div data-language="eng" data-ev-field="abstract">The phenomenon of fast forward and backward light pulse propagation in effectively transparent non-Hermitian photonic systems is reported. Specifically, the propagation eigenmodes are analyzed in several parity-time-symmetric coupled waveguides. In contrast to a previous finding that showed slow light due to an exceptional point in such systems, a critical point in its close proximity that displays a diverging dispersion is identified. Superluminal light pulse propagation in the forward and backward directions is then found and observed numerically on the two sides of the critical point, respectively. This abnormal phenomenon can be understood by a conservation relation of group velocities, which can be extended to other transparent non-Hermitian photonic systems with different symmetries. More importantly, the abrupt transition across the critical point between the fast forward and backward light can be tuned, indicating the possibility of detecting atom-scale movement of the waveguides with little time delay. In addition, bandwidth broadening and a passive superluminal propagation configuration are discussed.<br/></div> &copy; 2021 Wiley-VCH GmbH
Number of references:32
Main heading:Slow light
Controlled terms:Waveguides - Light transmission - Light
Uncontrolled terms:Abnormal phenomenon - Bandwidth broadening - Coupled waveguides - Exceptional points - Forward-and-backward - Light pulse propagation - Superluminal light - Superluminal propagation
Classification code:714.3  Waveguides - 741.1  Light/Optics
DOI:10.1002/lpor.202000204
Funding details:  Number: 201903, Acronym: -, Sponsor: -;Number: 61635013,61675231,61705257,61805277, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 12004421,2016353, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;Number: 2019JQ-447, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;
Funding text:L.Z. and L.Y. contributed equally to this work. Prof. Wenfu Zhang acknowledges the National Natural Science Foundation of China (Grant Nos. 61635013, 61675231, 61705257, and 61805277) and the Strategic Priority Research Program of the Youth Innovation Promotion Association of CAS (Grant No. 2016353). L.Z. acknowledges the National Natural Science Foundation of China (Grant No. 12004421), the Natural Science Foundation of Shaanxi Province (2019JQ-447), and the Research Project of Xi'an Postdoctoral Innovation Base (No. 201903).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 110>
 
Accession number:20210609889126
Title:Determination of the photoemission position in single-photon ionization with attosecond streaking spectroscopy
Authors:Wang, Feng (1); Liao, Qing (1); Liu, Kai (1); Qin, Meiyan (1); Zhang, Xiaofan (1); Zhang, Qingbin (2); Cao, Wei (2); Pi, Liang-Wen (3); Zhou, Yueming (2); Lu, Peixiang (4) 
Author affiliation:(1) Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan; 430205, China; (2) Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan; 430074, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (4) Guangdong Intelligent Robotics Institute, Dongguan; 523808, China 
Source title:Physical Review A
Abbreviated source title:Phys. Rev. A
Volume:103
Issue:1
Issue date:January 2021
Publication year:2021
Article number:A15
Language:English
ISSN:24699926
E-ISSN:24699934
Document type:Journal article (JA)
Publisher:American Physical Society
Abstract:Attosecond metrology can directly measure attosecond emission time of photoexcited electrons from matter, providing unprecedented understanding of transition processes of electrons from bound to continuum states. However, some fundamental details of the electron dynamics in the entire emission process upon photoexcitation still remain debatable or unknown. The photoemission time delays deduced from attosecond streaking spectroscopy originate from photoelectron propagation in the coupled Coulomb-laser fields, encoding the spatial and spectral information of electrons upon photoexcitation. Here we demonstrate that attosecond photoemission delays can be used to image picometer-resolved photoemission position via a classical model. The electronic dynamics in the laser-assisted single-photon ionization process is fully captured by a quantum path-integral model. We trace the imaged photoemission position to the average position of spatially coherent superposition of electron waves upon photoexcitation and, in particular, predict emission position coinciding with the orbital radius of the ground state of hydrogen-like atoms, in contrast with previous predictions.<br/> &copy; 2021 American Physical Society.
Number of references:40
Main heading:Photoemission
Controlled terms:Photoelectron spectroscopy - Photoionization - Photons - Photoexcitation - Particle beams - Ground state - Electrons
Uncontrolled terms:Attosecond metrology - Coherent superpositions - Electronic dynamics - Hydrogen-like atoms - Photoexcited electrons - Single photon ionization - Spectral information - Transition process
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 741.1  Light/Optics - 801.4  Physical Chemistry - 802.2  Chemical Reactions - 931.3  Atomic and Molecular Physics - 932.1  High Energy Physics
DOI:10.1103/PhysRevA.103.013115
Funding details:  Number: T201806, Acronym: -, Sponsor: Hubei Provincial Department of Education;Number: 11627809,11674257,11934006,11947096,12021004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2020CFA082, Acronym: -, Sponsor: Natural Science Foundation of Hubei Province;Number: 2019B030302003, Acronym: -, Sponsor: Applied Basic Research Key Project of Yunnan;
Funding text:This work was supported by the National Natural Science Foundation of China (Grants No. 11934006, No. 11674257, No. 11627809, No. 12021004, and No. 11947096), Hubei Provincial Department of Education (Grant No. T201806), the Natural Science Foundation of Hubei Province (Grant No. 2020CFA082), and the Guangdong Major Project of Basic and Applied Basic Research (Grant No. 2019B030302003).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 111>
 
Accession number:20212810608721
Title:Optical ranging system based on multiple pulse train interference using soliton microcomb
Authors:Zheng, Jihui (1); Wang, Yang (2, 3); Wang, Xinyu (2, 3); Zhang, Fumin (1); Wang, Weiqiang (2); Ma, Xin (1); Wang, Jindong (1); Chen, Jiawei (1); Jia, Linhua (1); Song, Mingyu (1); Yuan, Meiyan (2, 3); Little, Brent (2, 3); Chu, Sai Tek (4); Cheng, Dong (2, 3); Qu, Xinghua (1); Zhao, Wei (2, 3); Zhang, Wenfu (2, 3) 
Author affiliation:(1) State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin; 300072, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, Hong Kong 
Corresponding authors:Zhang, Fumin(zhangfumin@tju.edu.cn); Wang, Weiqiang(wwq@opt.ac.cn); Zhang, Wenfu(wfuzhang@opt.ac.cn)
Source title:Applied Physics Letters
Abbreviated source title:Appl Phys Lett
Volume:118
Issue:26
Issue date:June 28, 2021
Publication year:2021
Article number:261106
Language:English
ISSN:00036951
CODEN:APPLAB
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">The multiple pulse train interference (MPTI) ranging system takes advantage of the high accuracy and absolute length measurement capability, but traditional scheme has a large measurement dead zone. In this Letter, we propose a MPTI ranging scheme based on chip-based soliton microcomb to achieve high-precision but no dead-zone measurement. The measurement optical path is improved to solve the problem of cross correlation interference fringe overlap, and a peak fitting algorithm is employed to further improve the measurement accuracy of the system. Using a commercial He-Ne interferometer, a 384&thinsp;nm precision is obtained in 1.5 m distance measurements. Advantages of the simple optical path, high precision, and no measurement dead zone are expected to realize on-chip integration and provide a solution for precision measurement.<br/></div> &copy; 2021 Author(s).
Number of references:42
Main heading:Solitons
Controlled terms:Optical correlation - Range finding
Uncontrolled terms:Absolute length measurement - Cross correlations - Interference fringe - Measurement accuracy - On-chip integration - Optical ranging - Precision measurement - Ranging systems
Classification code:741.1  Light/Optics
Numerical data indexing:Size 1.50e+00m
DOI:10.1063/5.0054065
Funding details:  Number: 18YFZCGX00920, Acronym: -, Sponsor: -;Number: 51675380,51775379,61635013,61675231,61705257,61805277,62075238, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XDB24030600, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2018YFB2003501,2018YFF0212702, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;Number: 2016353, Acronym: YIPA, Sponsor: Youth Innovation Promotion Association;
Funding text:This work was supported by the National Natural Science Foundation of China (Grant Nos. 51675380, 62075238, 61675231, 51775379, 61635013, 61705257, and 61805277); National Key Research and Development Plan of China (Grant Nos. 2018YFF0212702 and 2018YFB2003501); Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB24030600); Youth Innovation Promotion Association, Chinese Academy of Sciences (Grant No. 2016353); and Key Projects Supported by Science and Technology of Tianjin, China (Grant No. 18YFZCGX00920).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 112>
 
Accession number:20213010675818
Title:Perfect Soliton Crystals in the High-Q Microrod Resonator
Authors:Niu, Rui (1, 3); Wan, Shuai (1, 3); Wang, Zheng-Yu (1, 3); Li, Jin (1, 3); Wang, Wei-Qiang (2, 4); Zhang, Wen-Fu (2, 4); Guo, Guang-Can (1, 3); Zou, Chang-Ling (1, 3); Dong, Chun-Hua (1, 3) 
Author affiliation:(1) Cas Key Laboratory of Quantum Information, University of Science and Technology of China, Anhui, Hefei; 230026, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Cas, Xi'an; 710119, China; (3) Cas Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Anhui, Hefei; 230026, China; (4) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Dong, Chun-Hua(chunhua@ustc.edu.cn)
Source title:IEEE Photonics Technology Letters
Abbreviated source title:IEEE Photonics Technol Lett
Volume:33
Issue:15
Issue date:August 1, 2021
Publication year:2021
Pages:788-791
Article number:9481249
Language:English
ISSN:10411135
E-ISSN:19410174
CODEN:IPTLEL
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">The coherent temporal soliton in optical microresonators has attracted great attention recently. Here, we have fabricated the microrod resonator with Q factor as high as 2 &times; 108 and demonstrated the dissipative Kerr soliton generation in such a microresonator, by utilizing an auxiliary-laser-assisted thermal response control. In addition, we have changed the pump laser and observed the perfect soliton crystals. With the simulation, we found that the perfect soliton crystals are generated based on the avoided mode crossing, which is affected by the pump resonance and pump power.<br/></div> &copy; 1989-2012 IEEE.
Number of references:46
Main heading:Microresonators
Controlled terms:Q factor measurement - Optical resonators - Solitons - Pumping (laser)
Uncontrolled terms:Kerr solitons - Laser-assisted - Micro resonators - Optical microresonators - Pump laser - Pump power - Temporal solitons - Thermal response
Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 744.7  Laser Components - 942.2  Electric Variables Measurements
DOI:10.1109/LPT.2021.3096645
Funding details:  Number: 11874342,11934012,92050109, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2016YFA0301303, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;Number: -, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:Manuscript received April 5, 2021; revised June 22, 2021; accepted July 8, 2021. Date of publication July 12, 2021; date of current version July 22, 2021. This work was supported in part by the National Key Research and Development Program of China under Grant 2016YFA0301303; in part by the National Natural Science Foundation of China under Grant 11934012, Grant 11874342, and Grant 92050109; and in part by the Fundamental Research Funds for the Central Universities. (Corresponding author: Chun-Hua Dong.) Rui Niu, Shuai Wan, Zheng-Yu Wang, Jin Li, Guang-Can Guo, Chang-Ling Zou, and Chun-Hua Dong are with the CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China, and also with the CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China (e-mail: chunhua@ustc.edu.cn).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 113>
 
Accession number:20211410162042
Title:Evaluation of compression quality of space-borne interference hyperspectral image
Authors:Zhang, Xiaorong (1); Li, Siyuan (1); Hu, Bingliang (1); Liu, Xuebin (1); Yan, Qiangqiang (1); Li, Yun (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China 
Corresponding author:Zhang, Xiaorong(zhangxiaorong@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11763
Part number:1 of 1
Issue title:Seventh Symposium on Novel Photoelectronic Detection Technology and Applications
Issue date:2021
Publication year:2021
Article number:117633G
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643611
Document type:Conference article (CA)
Conference name:7th Symposium on Novel Photoelectronic Detection Technology and Applications
Conference date:November 5, 2020  -  November 7, 2020
Conference location:Kunming, China
Conference code:167886
Sponsor:Chinese Society for Optical Engineering (CSOE); Science and Technology on Low-light-level Night Vision Laboratory
Publisher:SPIE
Abstract:The data acquired by the space-borne interference hyperspectral imager is a hybrid interferogram cube. For this kind of complicated data, there are many compression schemes for the on-board compression encoder. How to determine the optimal compression scheme and the optimal compression parameters under this compression scheme is crucial to recovering data. This paper proposes three compression schemes for space-borne interference hyperspectral images, which are mixed interferograms, pure interferograms, and fast views, respectively, and performs a compression evaluation. The peak signal-to-noise ratio of the recovered image, minimum quadratic error, and the spectral angle corresponding to the restored spectral curve are used as the measurement indicators to determine the optimal scheme and the optimal compression parameter configuration which are successfully applied to the development of the spectrometer. This paper establishes a scene-rich remote sensing interference hyperspectral image data source, quantitatively evaluates the impact of different compression ratios under different compression schemes, and changes in remote sensing image displacement, guides instrument design and parameter configuration, and lays a good foundation for the data application of space-borne interference hyperspectral images.<br/> &copy; 2021 SPIE
Number of references:14
Main heading:Remote sensing
Controlled terms:Signal to noise ratio - Space optics - Image quality - Image compression - Interferometry - Quality control - Spectroscopy
Uncontrolled terms:Compression quality - Hyperspectral image datas - Hyperspectral imagers - Measurement indicators - Optimal compression - Optimal compression schemes - Peak signal to noise ratio - Remote sensing images
Classification code:656.1  Space Flight - 716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 913.3  Quality Assurance and Control - 941.4  Optical Variables Measurements
DOI:10.1117/12.2586561
Funding details:  Number: 61501456, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XAB2019B26,Y790Q01C01, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This project was funded by the Western Light Project of the Chinese Academy of Sciences (No. XAB2019B26), the HJ-2 satellite whole-satellite ground test system project (No. Y790Q01C01), and the National Natural Science Foundation of China (No. 61501456).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 114>
 
Accession number:20213310779846
Title:High-stability three-field TV detection system
Title of translation:&#39640;&#31283;&#23450;&#24615;&#19977;&#35270;&#22330;&#30005;&#35270;&#25506;&#27979;&#31995;&#32479;
Authors:Peng, Jian-Wei (1); Ma, Ying-Jun (1); Chen, Wei-Ning (1); Shi, Kui (1); Zhang, Gao-Peng (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Zhang, Gao-Peng(zhanggaopeng@opt.ac.cn)
Source title:Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title:Guangxue Jingmi Gongcheng
Volume:29
Issue:7
Issue date:July 2021
Publication year:2021
Pages:1559-1566
Language:Chinese
ISSN:1004924X
CODEN:GJGOF4
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:<div data-language="eng" data-ev-field="abstract">To meet the strict requirements of stability and consistency of the optical axis for the current three-field TV detection system with a photoelectric search and tracking device, a three-field TV detection system with a rotary switching mechanism was studied. Through the analysis of the system indicators, an optical system for cut-in and cut-out field of view switching was selected, and the structure of the rotary switching mechanism was presented. Based on this, a precise rotating shafting, position-limit mechanism with a powerful neodymium magnet and a high elastic plunger, and worm drive mechanism with self-locking characteristics were designed. The selection process and results of the limit mechanism and the drive mechanism were given. A method of optical axis consistency adjustment with theodolite and cross-reticle was proposed. With this design and adjustment process, a high-stability three-field TV detection system was realized. The test results show that the stability of the optical axis of the M-FOV is less than 8", and the consistency of the optical axis of the three fields of view is within 1 pixel size, which meets the indicator requirements. The results of laboratory and outdoor experiments show that the imaging quality of each field of view of the system is excellent, and the detection range is long, which can meet the requirements of use.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:12
Main heading:Optical systems
Controlled terms:System stability - Neodymium alloys
Uncontrolled terms:Detection range - Detection system - Fields of views - Optical-axis consistencies - Outdoor experiment - Switching mechanism - System indicators - Tracking devices
Classification code:547.2  Rare Earth Metals - 741.3  Optical Devices and Systems - 961  Systems Science
DOI:10.37188/OPE.20212907.1559
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 115>
 
Accession number:20220811682264
Title:Study on assembly technology of primary and secondary mirror system based on truss structure
Authors:Peng, Wang (1); Xing, Song (1); Xiao-Hua, Hou (1); Zhong, Shen (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Peng, Wang
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12070
Part number:1 of 1
Issue title:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Issue date:2021
Publication year:2021
Article number:120700C
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650152
Document type:Conference article (CA)
Conference name:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes 2021
Conference date:June 14, 2021  -  June 17, 2021
Conference location:Chengdu, China
Conference code:176905
Sponsor:Institute of Optics and Electronics (IOE), Chinese Academy of Sciences; The Chinese Optical Society (COS)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">According to the assembly requirements of the space camera's primary and secondary mirror system, this paper proposes the assembly process of carbon fiber truss fuselage's primary and secondary mirror system based on adhesive error compensation technology. The process starts from a system point of view, the adhesive bonding of the truss fuselage was unified with the assembly of the primary and secondary mirror system. The adhesive technology was used to compensate the machining errors of the structural parts, and the adhesive bonding of the truss fuselage and the optical axis consistency assembly of primary and secondary mirror system are realized in the process of one adjustment. According to this assembly process idea, the assembly process of primary and secondary mirror system was designed. Firstly, the optical axis of the primary mirror and the optical axis of the secondary mirror were calibrated by the principle of autocollimation, and the optical axis was guided to the cross reticule as the reference for subsequent installation and adjustment. Secondly, in order to realize this process method, the assembly and adjustment platform of the primary and secondary mirror was designed and built. In addition, the factors that affect the assembly precision of the primary and secondary mirror system are analyzed one by one, and the calculation method of system assembly error is obtained. This assembly method has been successfully applied to a space camera. After assembly, the coaxiality between the optical axis of the primary mirror and the optical axis of the secondary mirror is better than 0.02mm, the Angle between the optical axis is better than 10 ", and the wavefront of the primary and secondary mirror system is close to the optical design index. The assembly method presented in this paper provides a technical reference for the assembly of similar large aperture optical machine system.<br/></div> &copy; 2021 SPIE
Number of references:3
Main heading:Carbon fibers
Controlled terms:Cameras - Error compensation - Adhesives - Assembly - Carbon fiber reinforced plastics - Mirrors - Trusses
Uncontrolled terms:Adhesive assembly - Assembly process - Carbon fiber truss - Mirror systems - Optical axis - Optical-axis consistencies - Primary and secondary mirror system - Primary mirrors - Secondary mirror - Space cameras
Classification code:408.2  Structural Members and Shapes - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment - 804  Chemical Products Generally - 817.1  Polymer Products
Numerical data indexing:Size 2.00E-05m
DOI:10.1117/12.2603955
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 116>
 
Accession number:20220211449156
Title:Design of wide view aerial camera system in low-light
Title of translation:&#20302;&#29031;&#24230;&#23485;&#24133;&#33322;&#31354;&#30456;&#26426;&#31995;&#32479;&#35774;&#35745;
Authors:Peng, Jianwei (1); Chen, Weining (1); Zhang, Gaopeng (1); Fang, Yao (1); Dong, Sen (1); Yang, Hongtao (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Zhang, Gaopeng
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue:12
Issue date:December 25, 2021
Publication year:2021
Article number:20210312
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">In order to meet the requirements of quick acquisition of aerial image information in low light condition, a wide view imaging system which can be adapted to low-light environments was studied. Based on the camera working mode of frame-sweep imaging, the technology route of adopting a large relative aperture and low distortion optical system, combining a low-noise and high-sensitivity CMOS detector with vacuum cooling, and compensating the scanning image motion by high-speed steering mirror was clarified. The design ideas of the mechanical configuration of the camera were explained in detail, and a set of calculation methods of imaging capabilities in low-light which can be applied in engineering were summarized. The basic principle of compensating image motion with steering mirror was studied, and the main frame of the camera was simulated, analyzed and calculated. According to the design and research results, the processing and assembly of the wide view aerial camera in low-light were completed. The camera has a ground sample distance (GSD) of 0.1 meters (height 1 km), and adaptable illumination range of 10-100000 lx, and a large view width of 3 times the height when the speed to height ratio is less than 0.04. The imaging quality of the system is excellent, and test results show that the MTF of the center field of view at 77 lp/mm is greater than 0.45. The images obtained from laboratory and field flight tests are clear, with high contrast and resolution, which can meet the requirements of use. At the same time, the system is 190 mm&times;140 mm&times;140 mm in actual size and 2800 g in weight, which is light and small.<br/></div> Copyright &copy;2021 Infrared and Laser Engineering. All rights reserved.
Number of references:13
Main heading:Optical systems
Controlled terms:Cameras - Mirrors - Antennas
Uncontrolled terms:Aerial camera - Aerial images - Camera systems - Image information - Image motion - Low light - Low light conditions - Quick acquisition - Simulation analysis - Wide view
Classification code:741.3  Optical Devices and Systems - 742.2  Photographic Equipment
Numerical data indexing:Illuminance 1.00E+01lx to 1.00E+05lx, Mass 2.80E+00kg, Size 1.00E+03m, Size 1.00E-01m, Size 1.40E-01m, Size 1.90E-01m
DOI:10.3788/IRLA20210312
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 117>
 
Accession number:20213110707199
Title:Thermochromic Film Based on VO<inf>2</inf>@SiO<inf>2</inf> Core-shell Nanoparticles
Title of translation:&#22522;&#20110;VO<inf>2</inf>@SiO<inf>2</inf>&#26680;&#22771;&#32435;&#31859;&#31890;&#23376;&#30340;&#28909;&#33268;&#21464;&#33394;&#34180;&#33180;
Authors:Wang, Xin (1); Hu, Wenjie (1); Xu, Yao (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:7
Issue date:July 25, 2021
Publication year:2021
Article number:0731001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">A thermochromic film was prepared with VO<inf>2</inf>@SiO<inf>2</inf> core-shell nanoparticles to enhance the visible light transmittance and weather resistance of thermochromic film and also decrease the agglomeration of VO<inf>2</inf> nanoparticles prepared by thermal decomposition method. VO(OH)<inf>2</inf>@SiO<inf>2</inf> core-shell nanoparticles were prepared by coating SiO<inf>2</inf> layer on the surface of VO(OH)<inf>2</inf> nanoparticles via the surface electric interaction between nagatively charged VO(OH)<inf>2</inf> nanoparticles and positively charged NH<inf>2 </inf>groups of aminopropyltriethoxylsilane. Then a normal heat treatment of VO(OH)<inf>2</inf>@SiO<inf>2 </inf>under Ar atmosphere was utilized to obtain VO<inf>2</inf>@SiO<inf>2</inf> nanoparticles. Subsequently optical film with good thermochromic property was prepared by coating the resin dispersion of VO<inf>2</inf>@SiO<inf>2 </inf>on well cleaned glass. The thermochromic property and the weather resistance of thermochromic film were studied. From TEM images, we find that SiO<inf>2</inf> shell prevents the agglomeration of VO(OH)<inf>2</inf> during heat treatment. Research on the optical properties of the film shows that the SiO<inf>2</inf> and air of low refractive index can improve the optical properties of thermochromic films, and when the mass fraction of VO<inf>2</inf>@SiO<inf>2</inf> nanoparticles is 10wt%, the optical performance of the composite film is the best. The protective effect of the SiO<inf>2</inf> shell to the VO<inf>2</inf> core obviously improves the oxidation resistance and corrosion resistance of VO<inf>2</inf> in damp heating and acidic environment, which makes longer life of VO<inf>2</inf> thermochromic film.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:25
Main heading:Shells (structures)
Controlled terms:Film preparation - Silicon - Optical films - Decomposition - Heat treatment - Refractive index - SiO2 nanoparticles - Silica nanoparticles - Vanadium dioxide - Agglomeration  - Composite films
Uncontrolled terms:Electric interaction - Low refractive index - Optical performance - Positively charged - Thermal decomposition methods - Thermochromic properties - Visible light transmittances - Weather resistance
Classification code:408.2  Structural Members and Shapes - 537.1  Heat Treatment Processes - 549.3  Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 761  Nanotechnology - 802.2  Chemical Reactions - 802.3  Chemical Operations - 804.2  Inorganic Compounds
DOI:10.3788/gzxb20215007.0731001
Funding details:  Number: u1530148, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:item&#65306;National Natural Science Foundation of China&#65288;No. u1530148&#65289;
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 118>
 
Accession number:20210509874612
Title:Applications and development of micro-or nano-metric multi degree of freedom adjusting displacement scaling mechanisms for primary mirror
Authors:Hu, Bin (1); Li, Chuang (2); Zhu, Qing (1); Ye, Jing (1, 2) 
Author affiliation:(1) Xian Institute of Optics and Precision Mechanics, 17 Xinxi Road, Xian, Shaanxi; 710119, China; (2) University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing; 100049, China 
Corresponding author:Hu, Bin(lenovosk@sina.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117610R
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:For large aperture and high-resolution space optical cameras, the focusing requirements caused by different resolution requirements, or the requirements for the segmented primary mirror for deployable telescopes or on-orbit assembly space telescopes, the micro-or nano-metric multi degree of freedom adjusting of the primary mirror or the segment mirror is one of the inevitable development trends of the active optical system. According to the different degrees of freedom involved in the primary mirror adjustment, the micro-or nano-metric multi degree of freedom adjusting displacement scaling mechanisms of the monolithic and segmented primary mirror are studied. The development history and structural characteristics of multi degree of freedom adjusting displacement scaling mechanisms including rigid lever type, gear deceleration type, hydraulic mechanism type and compliant hinge type, as well as their research status and application fields, are introduced. The performance characteristics and applications of various displacement scaling mechanisms are analyzed and compared. Finally, according to the application requirements of space telescopes in the future, the development trend of multi degree of freedom (DOF) adjusting displacement scaling mechanism for segmented primary mirror is proposed.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:17
Main heading:Degrees of freedom (mechanics)
Controlled terms:Optical systems - Mechanisms - Space telescopes - Gears - Mirrors - Ultrasonic devices
Uncontrolled terms:Application requirements - Deployable telescopes - Development history - Different resolutions - Multi degree-of-freedom - Performance characteristics - Segmented primary mirrors - Structural characteristics
Classification code:601.2  Machine Components - 601.3  Mechanisms - 741.3  Optical Devices and Systems - 753.2  Ultrasonic Devices - 931.1  Mechanics
DOI:10.1117/12.2586744
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 119>
 
Accession number:20213510833159
Title:Optical coherence tomography-surveilled laser ablation using multifunctional catheter and 355-nm optical pulses
Authors:Kang, Jiqiang (1); Zhu, Rui (2, 3); Li, Jianan (3, 4); Liu, Haiping (3); Ma, Xiuquan (5); Tao, Ling (6); Sun, Yunxu (1) 
Author affiliation:(1) School of Electronic and Information Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen; 518055, China; (2) International Graduate School at Shenzhen, Tsinghua University, Shenzhen; 518055, China; (3) Shenzhen Vivolight Medical Device & Technology Co., Ltd., Shenzhen; 518055, China; (4) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China; (5) School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Hubei; Wuhan; 430074, China; (6) Department of Cardiology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Road, Xi'an; Shaanxi; 710032, China 
Corresponding author:Sun, Yunxu(sunyunxu@hit.edu.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:501
Issue date:December 15, 2021
Publication year:2021
Article number:127364
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">An optical coherence tomography (OCT)-monitored laser ablation system is presented in this study. The laser ablation subsystem is constructed using the third harmonic output of a Nd:YAG laser source operating at a 355-nm optical wavelength with a single pulse energy greater than 160 mJ and a 1&ndash;10 Hz tunable repetition rate. The imaging subsystem is a typical M-mode swept-source OCT system. Moreover, a type of all-fiber multifunctional integrated catheter is demonstrated. The ablation catheter consists of a fiber bundle including 41 multi-mode fibers with an outer diameter of 0.9 mm. A forward-viewing OCT imaging probe is inserted into the ablation catheter for M-mode imaging. The performance of the system is demonstrated by OCT surveillance of the laser ablation process using expanded polystyrene foam as the sample. The OCT system can be used to record the ablation process and simultaneously count the laser ablation duration. This study proposes an effective potential technique to surveil material laser ablation processes, especially in situations where bulky optics are prohibited and all-fiber devices are required.<br/></div> &copy; 2021 Elsevier B.V.
Number of references:50
Main heading:Optical tomography
Controlled terms:Fibers - Catheters - Laser ablation - Neodymium lasers - Yttrium aluminum garnet - Pulse repetition rate
Uncontrolled terms:Ablation catheters - Coherence tomography - Harmonic outputs - Laser ablation systems - Laser sources - Lasers ablations - Nd:YAG laser - Optical- - Third harmonic - Tomography system
Classification code:462.1  Biomedical Equipment, General - 641.2  Heat Transfer - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 744.4  Solid State Lasers - 744.8  Laser Beam Interactions - 804.2  Inorganic Compounds
Numerical data indexing:Energy 1.60E-01J, Frequency 1.00E+01Hz, Size 3.55E-07m, Size 9.00E-04m
DOI:10.1016/j.optcom.2021.127364
Funding details:  Number: 81927805, Acronym: NNSFC, Sponsor: National Natural Science Foundation of China;Number: JCYJ20160427183803458, Acronym: -, Sponsor: Science and Technology Planning Project of Shenzhen Municipality;Number: JCYJ20190806142610885, Acronym: -, Sponsor: Shenzhen Fundamental Research Program;
Funding text:This work was partially supported by grants from the National Natural Science Foundation of China (Grant No. 81927805 ), the Shenzhen Municipal Science and Technology Plan Project , China (Grant No. JCYJ20160427183803458 ), and the Shenzhen Fundamental Research Program , China (Grant No. JCYJ20190806142610885 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 120>
 
Accession number:20214511111237
Title:Design of video image acquisition and SDI display in large field of view
Title of translation:&#22823;&#35270;&#22330;&#35270;&#39057;&#22270;&#20687;&#37319;&#38598;&#21450;SDI&#26174;&#31034;&#35774;&#35745;
Authors:Zhang, Yongkang (1); Chen, Ping (1); Meng, Xiangsheng (1); Tian, Yan (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue date:October 25, 2021
Publication year:2021
Article number:20200211
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">According to the real demand of image real-time storage display and real-time tracking display for large field of view and high-speed camera, which was with Camera Link interface, a large field of view image acquisition and SDI display system based on FPGA was designed. FPGA EP2S90F1020 of Altera Company as the core processor and two pieces of SDRAM MT48LC4M32 were used. A method of image real-time zooming based on FPGA and real-time conversion of Bayer format color image to SDI display was proposed. The real-time display of large field of view color video image, which was Camera Link interface, was realized on SDI video image. The experimental results show that the design method can convert the 2 048&times;2 048, 100 Hz video image of Camera Link interface into 1 920&times;1 080, 25 Hz or 1 280&times;720, 25 Hz, or 720&times;576, 50 Hz SDI display in real time. In the FPGA environment, the whole image processing time is 8.7 ms, which meets the real-time requirements of the system, and provides an effective implementation method for the real-time display of large field of view video image in embedded system.<br/></div> &copy; 2021, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:11
Main heading:Field programmable gate arrays (FPGA)
Controlled terms:Dynamic random access storage - High speed cameras
Uncontrolled terms:Baye - Camera links - Camera-link interfaces - HD-SDI - Large field of views - Real time display - Real time tracking - Real- time - Tracking displays - Video image
Classification code:721.2  Logic Elements - 722.1  Data Storage, Equipment and Techniques - 742.2  Photographic Equipment
Numerical data indexing:Frequency 1.00E+02Hz, Frequency 2.50E+01Hz, Frequency 5.00E+01Hz, Time 8.70E-03s
DOI:10.3788/IRLA20200211
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 121>
 
Accession number:20212010346833
Title:Analysis of a wavelength-tunable D-shaped photonic crystal fiber filter with broad bandwidth
Authors:Meng, Xiaojian (1); Li, Jianshe (1, 2, 3); Guo, Ying (1); Du, Huijing (1); Liu, Yundong (1); Li, Shuguang (1); Guo, Haitao (2); Bi, Weihong (3) 
Author affiliation:(1) State Key Laboratory of Metastable Materials Science & Technology, Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao; 066004, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (3) Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, School of Information Science and Engineering, Yanshan University, Qinhuangdao; 066004, China 
Corresponding author:Li, Jianshe(jianshelee@ysu.edu.cn)
Source title:Journal of the Optical Society of America B: Optical Physics
Abbreviated source title:J Opt Soc Am B
Volume:38
Issue:5
Issue date:May 2021
Publication year:2021
Pages:1525-1531
Language:English
ISSN:07403224
E-ISSN:15208540
CODEN:JOBPDE
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">This paper has designed a D-shaped photonic crystal fiber filter based on surface plasmon resonance. The singlepolarization filtering performance is analyzed systematically by the finite element method. It is found that the structural optimization process will modify the refractive index of the fundamental mode and the surface plasmon polarization mode, which results in a shift of the resonance wavelength. The proposed filter is able to indicate the wavelength-tunable function in the ranges of 1250-1350 nm and 1550-1750 nm by two methods.Moreover, at the communication windows of 1310 nm and 1550 nm, the corresponding filtering bandwidths are 170 and 550 nm, respectively. The flow chart of filter preparation reported in the study is promising for use in the field of optical devices.<br/></div> &copy; 2021 Optical Society of America.
Number of references:26
Main heading:Structural optimization
Controlled terms:Refractive index - Surface plasmon resonance - Bandwidth - Crystal whiskers - Photonic crystal fibers
Uncontrolled terms:1550 nm - Broad bandwidths - Filtering performance - Fundamental modes - Resonance wavelengths - Surface plasmon polarizations - Wavelength tunable
Classification code:716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 741.1.2  Fiber Optics - 921.5  Optimization Techniques - 933.1.1  Crystal Lattice - 951  Materials Science
Numerical data indexing:Size 1.25e-06m to 1.35e-06m, Size 1.31e-06m, Size 1.55e-06m, Size 1.55e-06m to 1.75e-06m, Size 1.70e-07m, Size 5.50e-07m
DOI:10.1364/JOSAB.421792
Funding details:  Number: B2018003008, Acronym: -, Sponsor: -;Number: 12074331, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: F2020203050, Acronym: -, Sponsor: Natural Science Foundation of Hebei Province;Number: SKLST201908, Acronym: SKLTOP, Sponsor: State Key Laboratory of Transient Optics and Photonics;Number: 2019YFB2204001, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:Funding. Open Research Fund of State Key Laboratory of Transient Optics and Photonics (SKLST201908); Postdoctoral Preferred Funding Research Project of Hebei Province (B2018003008); Program of the Natural Science Foundation of Hebei Province (F2020203050); National Natural Science Foundation of China (12074331); National Key Research and Development Program of China (2019YFB2204001).Open Research Fund of State Key Laboratory of TransientOptics and Photonics (SKLST201908); Postdoctoral Preferred Funding Research Project of Hebei Province (B2018003008); Program of the Natural Science Foundation of Hebei Province (F2020203050); National Natural Science Foundation of China (12074331); National Key Research and Development Program of China (2019YFB2204001).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 122>
 
Accession number:20214811222111
Title:Continuous blood pressure monitoring based on wearable optical fiber interferometry wristband
Authors:Chen, Xiao (1); Xu, Wei (2, 3); Dong, Bo (4); Yu, Changyuan (6, 7); Zhao, Wei (2, 3, 5); Wang, Yishan (2, 3, 5); Sun, Wenye (8) 
Author affiliation:(1) School of Electronic and Information Engineering, Soochow University, Suzhou; 21513, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (6) The Hong Kong Polytechnic University, Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong; (8) The Second Affiliated Hospital of Soochow University, Suzhou; 215000, China 
Corresponding authors:Dong, Bo(dbo1978@163.com); Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Part number:1 of 1
Issue title:Optoelectronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Article number:JS3F.12
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:26th Optoelectronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Virtual, Online, China
Conference code:174150
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">We demonstrate a wearable optical fiber interferometry wristband which is used for continuous blood pressure monitoring. The pulse transit time extracted from the pulse wave can be used to established the blood pressure estimation model.<br/></div> &copy; OSA 2021, &copy; 2021 The Author(s)
Number of references:5
Main heading:Interferometry
Controlled terms:Blood - Optical fibers - Wearable technology - Blood pressure
Uncontrolled terms:Blood pressure estimation - Continuous blood pressure monitoring - Estimation models - Optical-fiber interferometry - Pulse transit time - Pulse-wave
Classification code:461.2  Biological Materials and Tissue Engineering - 461.9  Biology - 741.1.2  Fiber Optics - 941.4  Optical Variables Measurements
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 123>
 
Accession number:20220811674432
Title:Figure error of optical elements induced aberrations of optical system
Authors:Pang, Zhihai (1); He, Tianbin (1) 
Author affiliation:(1) Space Optics Laboratory, Xi'an Institute of Optics and Precision Mechanics, CAS, Shanxi, Xi'an; 710119, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12071
Part number:1 of 1
Issue title:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing and Metrology Technologies
Issue date:2021
Publication year:2021
Article number:120710X
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650176
Document type:Conference article (CA)
Conference name:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing and Metrology Technologies 2021
Conference date:June 14, 2021  -  June 17, 2021
Conference location:Chengdu, China
Conference code:176906
Sponsor:Institute of Optics and Electronics (IOE), Chinese Academy of Sciences; The Chinese Optical Society (COS)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">The optical element's figure error can be express as Fringe Zernike polynomial and vector form, based on the vector wavefront aberration theory, the figure error of optical element induced aberration's characteristic of optical system has been analyses in this paper. The figure error on stop aperture affects all the field angles equally and induced the same type aberration as figure error. If the surface of optical element is not the pupil of optical system, the aberration observed in the focal plane is different from the figure error itself, it will not only induced the same type aberration as figure error but also induced lower order aberration in the optical system, the relationship between aberration and field of view is different and the location zero for the lower order aberration always reside at the center of the field of view.<br/></div> &copy; COPYRIGHT SPIE.
Number of references:10
Main heading:Optical systems
Controlled terms:Errors - Wavefronts - Aberrations
Uncontrolled terms:Aberration theory - Field angle - Field of views - Figure error - Focal Plane - Low order - Vector wavefront aberration - Wavefront aberrations - Zernike polynomials
Classification code:741.3  Optical Devices and Systems
DOI:10.1117/12.2604752
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 124>
 
Accession number:20224012832621
Title:Continuous Blood Pressure Monitoring Based on Wearable Optical Fiber Interferometry Wristband
Authors:Chen, Xiao (1); Xu, Wei (2, 3); Dong, Bo (4); Yu, Changyuan (6, 7); Zhao, Wei (2, 3, 5); Wang, Yishan (2, 3, 5); Sun, Wenye (8) 
Author affiliation:(1) School of Electronic and Information Engineering, Soochow University, Suzhou; 21513, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (6) The Hong Kong Polytechnic University Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong; (8) The Second Hospital of Soochow University, Suzhou; 215000, China 
Corresponding authors:Dong, Bo(dbo1978@163.com); Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:2021 Opto-Electronics and Communications Conference, OECC 2021
Abbreviated source title:Opto-Electron. Commun. Conf., OECC
Part number:1 of 1
Issue title:2021 Opto-Electronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Language:English
ISBN-13:9781943580927
Document type:Conference article (CA)
Conference name:2021 Opto-Electronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Hong Kong, Hong kong
Conference code:182432
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">We demonstrate a wearable optical fiber interferometry wristband which is used for continuous blood pressure monitoring. The pulse transit time extracted from the pulse wave can be used to established the blood pressure estimation model. OCIS codes: (060.2370) Fiber optical sensors; (000.1430) Biology and medicine.<br/></div> &copy; 2021 OSA.
Number of references:5
Main heading:Interferometry
Controlled terms:Blood - Blood pressure - Optical fiber communication - Optical fibers - Wearable sensors
Uncontrolled terms:Biology and medicine - Blood pressure estimation - Continuous blood pressure monitoring - Estimation models - Fiber-optical sensors - Fibre-optical sensors - Optical-fiber interferometry - Pulse transit time - Pulse-wave
Classification code:461.2  Biological Materials and Tissue Engineering - 461.9  Biology - 717.1  Optical Communication Systems - 741.1.2  Fiber Optics - 941.4  Optical Variables Measurements
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 125>
 
Accession number:20220211444608
Title:Alignment control in off-Axis Gregorian system with reverse optimization method
Authors:Yin, Yamei (1); Fu, Xing (1); Lei, Yu (1); Cao, Mingqiang (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shaanxi; 710119, China 
Corresponding author:Yin, Yamei(yinyamei@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12069
Part number:1 of 1
Issue title:AOPC 2021: Novel Technologies and Instruments for Astronomical Multi-Band Observations
Issue date:2021
Publication year:2021
Article number:1206915
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650138
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Novel Technologies and Instruments for Astronomical Multi-Band Observations, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175885
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Off-Axis refractive system with the noticeable advantages such as high resolution, large view field and central obscuration removed, has been one of the powerful systems for space astronomical telescopes in recent years. However, misalignment errors and surface error of mirrors are significant especially in the alignment progress of off-Axis reflective telescope with large aperture. Computer aided assembling (CAA) jointly provide a robust misalignment correction method to ensure the accurate alignment of telescope. In this paper, system aberration of misalignment coaxial system with two mirrors is analyzed in detail, moreover, the off-Axis system is studied further, especially in the off-Axis Gregorian system. And the feasibility of correction values solution about off-Axis refractive system is discussed. Both the simulation and experiment results demonstrate the feasibility of the proposed alignment method and high accuracy has been achieved. In the testing off-Axis Gregorian system, the primary mirror is paraboloid with 1200 mm diameter, 210 mm off-Axis distance, and the second mirror is ellipsoid with off-Axis distance 129.0 mm, focal length 425 mm and 2125 mm, respectively. For the testing off-Axis Gregorian system, the RMS value of primary mirror and second mirror are 0.021 &lambda; and 0.027 &lambda; (&lambda; = 0.6328 nm), and the testing optimization result of system wavefront aberration with RMS value is better than 0.058 &lambda; is achieved. The reverse optimization method testing can achieve high-Accuracy measurement ability, which provides efficient and flexible way for the off axis refractive system from various types of elements with complex surfaces.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:19
Main heading:Alignment
Controlled terms:Aberrations - Adaptive optics - Electromagnetic wave attenuation - Mirrors - Optical testing - Wavefronts
Uncontrolled terms:Active Optics - Correction method - Gregorian - Off-axis - Off-axis refractive system - Optimization method - Refractive systems - Reverse optimization - Reverse optimization correction method - Wavefront aberrations
Classification code:601.1  Mechanical Devices - 711  Electromagnetic Waves - 741.1  Light/Optics - 741.3  Optical Devices and Systems
Numerical data indexing:Size 1.20E+00m, Size 1.29E-01m, Size 2.10E-01m, Size 2.125E+00m, Size 4.25E-01m, Size 6.328E-10m
DOI:10.1117/12.2606822
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 126>
 
Accession number:20212810609192
Title:Dual Mode High Speed Uncooled Short Wave Infrared Camera Based on FPGA    (Open Access)
Authors:Liu, Qing (1); Wang, Huawei (1); Bian, He (1); Wang, Hua (1) 
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi, Xi'an; 710119, China 
Corresponding author:Liu, Qing(optliuqing@opt.ac.cn)
Source title:Journal of Physics: Conference Series
Abbreviated source title:J. Phys. Conf. Ser.
Volume:1952
Part number:3 of 4
Issue:3
Issue title:2021 Asia-Pacific Conference on Image Processing, Electronics and Computers, IPEC 2021 - 2. Electronics and Electrical Engineering
Issue date:June 29, 2021
Publication year:2021
Article number:032042
Language:English
ISSN:17426588
E-ISSN:17426596
Document type:Conference article (CA)
Conference name:2021 Asia-Pacific Conference on Image Processing, Electronics and Computers, IPEC 2021
Conference date:April 14, 2021  -  April 16, 2021
Conference location:Dalian, Virtual, China
Conference code:169882
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">This paper introduces a short-wave infrared camera logic design based on FPGA. The hardware design adopts the architecture of Sofradir Tecless SWIR detector SW640+Xilinx FPGA xc4vsx55, which has a dual working mode of 640 512 at 25 FPS and 64 48 at 4000 FPS. The function of high precision target tracking can be realized by high frequency capture of laser signal. In this design, the non-uniform correction coefficient table in SDRAM cache Flash is controlled by FPGA to correct the image of full resolution mode, and the table of 64 48 is cached by Bram in FPGA to achieve fast image correction and processing. The exposure time is controlled by the external synchronous signal, and the 14 bit precision image data are collected by four ADCs for restoration. The output data is processed by image bad point correction, non-uniform correction, median filtering, histogram equalization, and then the image is packaged and sent by the specified protocol.<br/></div> &copy; Published under licence by IOP Publishing Ltd.
Number of references:4
Main heading:Field programmable gate arrays (FPGA)
Controlled terms:Median filters - Integrated circuit design - Infrared radiation - Target tracking - Infrared devices
Uncontrolled terms:Correction coefficients - Full resolution modes - High frequency HF - Histogram equalizations - Image correction - Median filtering - Short wave infrared - Synchronous signals
Classification code:703.2  Electric Filters - 714.2  Semiconductor Devices and Integrated Circuits - 716.1  Information Theory and Signal Processing - 721.2  Logic Elements - 741.1  Light/Optics
DOI:10.1088/1742-6596/1952/3/032042
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 127>
 
Accession number:20213510845105
Title:Research on the properties of HfO<inf>2</inf>optical films prepared with APS assisted electron beam evaporation deposition
Authors:Pan, Yong-Gang (1); Liu, Zheng (1); Li, Mian (1); Liu, Wen-Cheng (1); Bai, Long (1); Zhang, Si-Bao (1); Luo, Chang-Xin (1); Zhang, Chun-Juan (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi; 710119, China 
Corresponding author:Pan, Yong-gang(pyg_optics@163.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11912
Part number:1 of 1
Issue title:Pacific Rim Laser Damage 2021: Optical Materials for High-Power Lasers
Issue date:2021
Publication year:2021
Article number:1191207
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510646834
Document type:Conference article (CA)
Conference name:Pacific Rim Laser Damage 2021: Optical Materials for High-Power Lasers
Conference date:May 23, 2021  -  May 25, 2021
Conference location:Hangzhou, China
Conference code:171344
Sponsor:Chinese Laser Press; Hangzhou Institute for Advanced Study
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">HfO2 thin films are widely used in laser system because of its superior optical and mechanical properties, especially high laser induced damage threshold. In this paper, single-layer HfO2 thin films were prepared by APS plasma assisted electron beam evaporation deposition. The effects of oxygen charging of electron gun, baking temperature, discharge current of APS source and bias voltage of APS source on optical properties, surface roughness, standing wave electric filed and laser induced damage threshold of HfO2 thin films were studied by orthogonal experiment. Experiment and analysis results showed that the characteristics of HfO2 thin films are closely related to the oxygen charging of electron gun, baking temperature and APS assisted processing parameters. Especially, baking temperature, oxygen charging of electron gun and bias voltage of APS source have great influence on laser induced damage threshold. Through the analysis of experimental date, the optimal combination of process parameters for APS assisted electron beam evaporation of HfO2 optical films were obtained.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:13
Main heading:Thin films
Controlled terms:Evaporation - Laser damage - Oxygen - Hafnium oxides - Optical films - Electron beams - Optical properties - Physical vapor deposition - Electrons - Film preparation  - Surface roughness
Uncontrolled terms:Assisted processing - Electron beam evaporation - Electron beam evaporation depositions - Experiment and analysis - Laser induced damage thresholds - Optical and mechanical properties - Optimal combination - Orthogonal experiment
Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 744.8  Laser Beam Interactions - 802.3  Chemical Operations - 804  Chemical Products Generally - 931.2  Physical Properties of Gases, Liquids and Solids
DOI:10.1117/12.2602069
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 128>
 
Accession number:20211710253695
Title:Research on Auto-focusing Method Based on Pulse Coupled Neural Network    (Open Access)
Authors:Chen, Taoyu (1); Wang, Huawei (1); Cao, Jianzhong (1) 
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shanxi; 710119, China 
Corresponding author:Wang, Huawei(whw@opt.ac.cn)
Source title:Journal of Physics: Conference Series
Abbreviated source title:J. Phys. Conf. Ser.
Volume:1848
Part number:1 of 1
Issue:1
Issue title:2021 4th International Conference on Advanced Algorithms and Control Engineering, ICAACE 2021
Issue date:April 13, 2021
Publication year:2021
Article number:012158
Language:English
ISSN:17426588
E-ISSN:17426596
Document type:Conference article (CA)
Conference name:2021 4th International Conference on Advanced Algorithms and Control Engineering, ICAACE 2021
Conference date:January 29, 2021  -  January 31, 2021
Conference location:Sanya, Virtual, China
Conference code:168420
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">The key to automatic focusing method based on image processing is to construct a fast and accurate focus quality evaluation function. The method in this article introduces Pulse Coupled Neural Network processing. Using the characteristics of the network, through the enhanced image, the grayscale sum can be conveniently used to characterize clarity, thereby simplifying calculations and enhancing the real-time performance of focus control.<br/></div> &copy; Published under licence by IOP Publishing Ltd.
Number of references:8
Main heading:Image enhancement
Controlled terms:Quality control - Neural networks
Uncontrolled terms:Auto-focusing - Automatic focusing - Focus control - Gray scale - Pulse coupled neural network - Quality evaluation - Real time performance
Classification code:913.3  Quality Assurance and Control
DOI:10.1088/1742-6596/1848/1/012158
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 129>
 
Accession number:20224012832623
Title:Beat-to-Beat Heart Rate Estimation from MZI-BCG Signal Based on Hierarchical Clustering
Authors:Zeng, Huaili (1); Xu, Wei (2, 3); Dong, Bo (4); Yu, Changyuan (6, 7); Zhao, Wei (2, 3, 5); Wang, Yishan (2, 3, 5); Sun, Wenye (8) 
Author affiliation:(1) School of Electronic and Information Engineering, Soochow University, Suzhou; 21513, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (6) The Hong Kong Polytechnic University Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong; (8) The Second Hospital of Soochow University, Suzhou; 215000, China 
Corresponding authors:Dong, Bo(dbo1978@163.com); Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:2021 Opto-Electronics and Communications Conference, OECC 2021
Abbreviated source title:Opto-Electron. Commun. Conf., OECC
Part number:1 of 1
Issue title:2021 Opto-Electronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Language:English
ISBN-13:9781943580927
Document type:Conference article (CA)
Conference name:2021 Opto-Electronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Hong Kong, Hong kong
Conference code:182432
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">An algorithm is proposed in this paper to estimate the beat-to-beat heart rate based on BCG signal derived from Mach-Zehnder Interferometer with hierarchical clustering and matched-filtering.<br/></div> &copy; 2021 OSA.
Number of references:3
Main heading:Heart
Controlled terms:Optical fiber communication - Optical fibers
Uncontrolled terms:Heart-rate - Hier-archical clustering - Hierarchical Clustering - Matched filtering - Rate estimation
Classification code:461.2  Biological Materials and Tissue Engineering - 717.1  Optical Communication Systems - 741.1.2  Fiber Optics
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 130>
 
Accession number:20210209767610
Title:Electromagnetic compatibility design of hyperspectral remote sensing high-speed imaging circuit
Title of translation:&#39640;&#20809;&#35889;&#36965;&#24863;&#39640;&#36895;&#25104;&#20687;&#30005;&#36335;&#30005;&#30913;&#20860;&#23481;&#35774;&#35745;
Authors:Liu, Yongzheng (1); Liu, Xuebin (1); Liu, Wenlong (1); Zhang, Xin (1); Chen, Xiaolai (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China 
Source title:Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics
Abbreviated source title:Xi Tong Cheng Yu Dian Zi Ji Shu/Syst Eng Electron
Volume:43
Issue:1
Issue date:January 2021
Publication year:2021
Pages:26-32
Language:Chinese
ISSN:1001506X
CODEN:XGYDEM
Document type:Journal article (JA)
Publisher:Chinese Institute of Electronics
Abstract:In the field of hyperspectral remote sensing imaging, the demand of indicators for hyperspectral remote resolution, hyperspectral resolution and large width of imaging loads are improved. To solve the problem that the electromagnetic interference (EMI) of the high-speed electronics of spaceborne hyperspectral imaging is becoming more and more intensive, the target design method to enhance the electromagnetic compatibility (EMC) capability of the spaceborne hyperspectral imager is proposed, and the implementation of the load on a specific series of high resolution hyperspectral imager verified the effectiveness of the targeted design. In order to seek the theoretical methods and technical implementation methods of EMI design for high-speed hyperspectral imagers, the useful explorations is made to provide a useful reference for the design of other spaceborne high-speed imaging loads for remote sensing.<br/> &copy; 2021, Editorial Office of Systems Engineering and Electronics. All right reserved.
Number of references:26
Main heading:Timing circuits
Controlled terms:Image enhancement - Electromagnetic compatibility - Design - Hyperspectral imaging - Electromagnetic pulse - Remote sensing - Spectroscopy
Uncontrolled terms:High resolution - High speed imaging - High-speed electronics - HyperSpectral - Hyperspectral imagers - Hyperspectral remote sensing - Technical implementation - Theoretical methods
Classification code:701  Electricity and Magnetism - 711.1  Electromagnetic Waves in Different Media - 713.4  Pulse Circuits - 746  Imaging Techniques
DOI:10.3969/j.issn.1001-506X.2021.01.04
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 131>
 
Accession number:20210509855597
Title:Laser-induced fluorescence and its effect on the damage resistance of fluoride-containing phosphate-based glasses
Authors:Li, Shengwu (1, 2); Yang, Yanqiang (3); Song, Yunfei (3); Wan, Rui (1, 2); Ma, Yuan (1, 2); Peng, Bo (1, 2); Zhang, Guangwei (4); Wang, Pengfei (1, 2) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; Shaanxi; 710119, China; (2) Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China; (3) National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang; 621900, China; (4) Zhejiang Fountain Aptitude Technology Inc., Hangzhou; 310051, China 
Corresponding author:Wang, Pengfei(pfwang@opt.ac.cn)
Source title:Ceramics International
Abbreviated source title:Ceram Int
Volume:47
Issue:9
Issue date:May 1, 2021
Publication year:2021
Pages:13164-13172
Language:English
ISSN:02728842
CODEN:CINNDH
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:A series of multi-component fluoride-containing phosphate-based glasses prepared in a reducing atmosphere showed improved resistance to high-energy ultraviolet (UV) laser-induced damage and strong laser-induced fluorescence (LIF) within the glass bulk. The UV optical absorption, photoluminescence, and fluorescence decay properties of these glasses were investigated to explore the defect-related LIF mechanism and its underlying effect on the glasses&rsquo; laser-induced damage threshold (LIDT). Seven laser wavelengths ranging from 253 nm to 532 nm were used to excite the LIF, and two characteristic fluorescence bands peaking at approximately 414 nm and 780&ndash;800 nm occurred in all three types of glasses. The LIF band at 414 nm was attributed to PO<inf>3</inf>-EC defects in the second harmonic frequency (2&omega;) absorptive glass and third harmonic frequency (3&omega;) transparent glass, but Fe<sup>2+</sup> ions in the fundamental frequency (1&omega;) absorptive glass. A later fluorescence band at 780&ndash;800 nm occurred due to POHC defects in the 2&omega; absorptive and 3&omega; transparent glasses and Fe<sup>3+</sup> ions in the 1&omega; absorptive glass. A detailed study on the dynamic decay processes of two additional dominant fluorescence peaks at 450 nm and 780 nm under 266 nm excitation revealed the potential effect of LIF on LIDT improvement. The relatively longer LIF lifetime, higher LIF intensity, and larger LIF peak area corresponded with and contributed to a higher LIDT, especially in the 3&omega; transparent glass with a low UV absorption coefficient. This study provides strong evidence for the prior hypothesis between strong LIF and LIDT.<br/> &copy; 2021 Elsevier Ltd and Techna Group S.r.l.
Number of references:49
Main heading:Glass
Controlled terms:Laser damage - Fluorescence - Laser produced plasmas - Defects - Fluorine compounds - Laser optics - Light absorption
Uncontrolled terms:Characteristic fluorescence - Fluorescence decays - Fundamental frequencies - Laser induced damage thresholds - Laser induced fluorescence - Phosphate based glass - Reducing atmosphere - Third-harmonic frequencies
Classification code:741.1  Light/Optics - 744.1  Lasers, General - 744.8  Laser Beam Interactions - 744.9  Laser Applications - 812.3  Glass - 932.3  Plasma Physics - 951  Materials Science
Numerical data indexing:Size 2.53e-07m to 5.32e-07m, Size 2.66e-07m, Size 4.14e-07m, Size 4.50e-07m, Size 7.80e-07m
DOI:10.1016/j.ceramint.2021.01.181
Funding details:  Number: 61307046,61775235, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XAB2016A08, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2017446, Acronym: -, Sponsor: Youth Innovation Promotion Association of the Chinese Academy of Sciences;
Funding text:This work is financially supported by the National Natural Science Foundation of China (NSFC No. 61775235 , 61307046 ), West Young Scholars Program of the Chinese Academy of Sciences ( XAB2016A08 ), and Youth Innovation Promotion Association, CAS ( 2017446 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 132>
 
Accession number:20211610236399
Title:Non-interferometric accurate phase imaging via linear-convergence iterative optimization    (Open Access)
Authors:Huang, Jianhui (1, 2); Pan, An (3); Jin, Huiliang (1); Meng, Guoxiang (1); Ye, Qian (1, 4) 
Author affiliation:(1) School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China; (2) Optics Laboratory, Georgia Institute of Technology, School of Electrical and Computer Engineering, 777 Atlantic Drive N.W., Atlanta; GA; 30332-0250, United States; (3) Pioneering Interdiscipline Center (PIC), State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (4) Laboratory of Radio Astronomy, Shanghai Observatory, Chinese Academy of Sciences, Shanghai; 200030, China 
Corresponding author:Ye, Qian(yeqian@sjtu.edu.cn)
Source title:Optics and Lasers in Engineering
Abbreviated source title:Opt Lasers Eng
Volume:144
Issue date:September 2021
Publication year:2021
Article number:106630
Language:English
ISSN:01438166
CODEN:OLENDN
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">This paper reported a general non-interferometric high-accuracy quantitative phase imaging (QPI) method for arbitrary complex-valued objects. Given by a typical 4-f optical configuration as the imaging system, three frames of small-window phase modulation are applied on the object's Fourier spectrum so that redistributed intensity patterns are produced on the image plane, in which the object phase emerges at different degree. Then, an algebraic relationship that connects the object phase with the output intensity is established to provide us with an approximate closed-form phase recovery. Further, an efficient iterative optimization strategy is developed to turn that approximate solution into an accurate one. Due to the linear convergence property of the iteration, a high-accuracy phase recovery is achieved without requiring heavy iterations. The feasibility and accuracy of the proposed method are verified by both numerical simulations and experiments on diverse phase objects including biomedical tissues.<br/></div> &copy; 2021
Number of references:42
Main heading:Phase modulation
Controlled terms:Interferometry - Numerical methods - Bioinformatics - Iterative methods
Uncontrolled terms:High-accuracy - Imaging method - In-line holography - Interferometrics - Iterative Optimization - Linear convergence - Phase imaging - Phase recovery - Phase retrieval - Quantitative phase imaging
Classification code:461.8.2  Bioinformatics - 921.6  Numerical Methods - 941.4  Optical Variables Measurements
DOI:10.1016/j.optlaseng.2021.106630
Funding details:  Number: U1931137, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: CSC, Sponsor: China Scholarship Council;
Funding text:National Science Foundation of China ( NSFC ), U1931137 ; China Scholarship Council (CSC) during the visit of Jianhui Huang to Georgia Tech is also acknowledged.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Green
 
<RECORD 133>
 
Accession number:20221111776822
Title:Differential Fresnel Reflection Based Fiber-optic Relative Humidity Sensor
Authors:Feng, Yifei (1); Xu, Wei (2, 3); Yu, Cheungchuen (4); Li, Jing (5); He, Ying (1); Sun, Wenye (6) 
Author affiliation:(1) Department of Marine Biomedicine and Polar Medicine, Naval Specialty Medical Center, Shanghai; 200433, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Haina-Intelligent Photonic System Research Center, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, Zhejiang, Hangzhou; 341006, China; (5) Anlight Optoelectronic Technology Inc., Suzhou; 215123, China; (6) Soochow University, Suzhou; 215000, China 
Corresponding author:He, Ying(yinghe_hys@163.com)
Source title:2021 19th International Conference on Optical Communications and Networks, ICOCN 2021
Abbreviated source title:Int. Conf. Opt. Commun. Networks, ICOCN
Part number:1 of 1
Issue title:2021 19th International Conference on Optical Communications and Networks, ICOCN 2021
Issue date:2021
Publication year:2021
Language:English
ISBN-13:9781665424462
Document type:Conference article (CA)
Conference name:19th International Conference on Optical Communications and Networks, ICOCN 2021
Conference date:August 23, 2021  -  August 27, 2021
Conference location:Qufu, China
Conference code:176985
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">Simple fiber-optic differential Fresnel reflection based relative humidity sensor with large dynamic range on is proposed and investigated. The response rate and the stability of the sensor are also addressed.<br/></div> &copy; 2021 IEEE.
Number of references:21
Main heading:Humidity sensors
Controlled terms:Photonics - Fiber optics
Uncontrolled terms:Differential-fresnel reflection - Dynamic range - Fiber-optics - Fresnel reflections - Large dynamic range - Relative humidity sensors - Response rate - Simple++
Classification code:443.2  Meteorological Instrumentation - 741.1  Light/Optics - 741.1.2  Fiber Optics - 741.3  Optical Devices and Systems
DOI:10.1109/ICOCN53177.2021.9563701
Funding details:  Number: BHJ20C008, Acronym: -, Sponsor: -;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:ACKNOWLEDGMENT This work was supported by the Army Logistics Research Project &#65288; BHJ20C008 &#65289; and the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 134>
 
Accession number:20214811222112
Title:Beat-to-beat heart rate estimation from MZI-BCG signal based on hierarchical clustering
Authors:Zeng, Huaili (1); Xu, Wei (2, 3); Dong, Bo (4); Yu, Changyuan (6, 7); Zhao, Wei (2, 3, 5); Wang, Yishan (2, 3, 5); Sun, Wenye (8) 
Author affiliation:(1) School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu; 611731, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) College of new Materials and new Energy, Shenzhen Technology University, Shenzhen; 518118, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (6) The Hong Kong Polytechnic University, Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong; (8) The Second Affiliated Hospital of Soochow University, Suzhou; 215000, China 
Corresponding authors:Dong, Bo(dbo1978@163.com); Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Part number:1 of 1
Issue title:Optoelectronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Article number:JS3F.13
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:26th Optoelectronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Virtual, Online, China
Conference code:174150
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">An algorithm is proposed in this paper to estimate the beat-to-beat heart rate based on BCG signal derived from Mach-Zehnder Interferometer with hierarchical clustering and matched-filtering.<br/></div> &copy; OSA 2021, &copy; 2021 The Author(s)
Number of references:3
Main heading:Heart
Uncontrolled terms:Heart-rate - Hier-archical clustering - Hierarchical Clustering - Matched filtering - Rate estimation
Classification code:461.2  Biological Materials and Tissue Engineering
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 135>
 
Accession number:20214811222114
Title:Unobtrusive sleep-wake discrimination based on arched carbon fiber structure aided highly sensitive under mattress MZI-BCG sensor and SVM
Authors:Xu, Wei (1, 2); Han, Shuying (3, 9); Sun, Wenye (4); Dong, Bo (5); Yu, Changyuan (6, 7); Zhao, Wei (1, 2, 8); Wang, Yishan (1, 2, 8) 
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 Electronic and Information Engineering, Soochow University, Suzhou; 21513, China; (4) The Second Affiliated Hospital of Soochow University, Suzhou; 215000, China; (5) College of new Materials and new Energy, Shenzhen Technology University, Shenzhen; 518118, China; (6) The Hong Kong Polytechnic University, Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong; (8) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (9) Anlight Optoelectronic Technology Corporation 
Corresponding authors:Dong, Bo(dbo1978@163.com); Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Part number:1 of 1
Issue title:Optoelectronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Article number:JS3F.15
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:26th Optoelectronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Virtual, Online, China
Conference code:174150
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">A compact arched carbon fiber structure aided fiber Mach-Zehnder interferometer (MZI) ballistocardiogram (BCG) sensor is designed and presented, which is used to realize unobtrusive sleep-wake discrimination combining cardiopulmonary coupling (CPC) and support vector machine (SVM) algorithm with high sensitivity and accuracy.<br/></div> &copy; OSA 2021, &copy; 2021 The Author(s)
Number of references:5
Main heading:Support vector machines
Controlled terms:Carbon fibers - Wakes - Arches
Uncontrolled terms:Carbon fibre structure - Fiber Mach-Zehnder interferometers - High sensitivity - High-accuracy - Sleep/wake - Support vector machines algorithms - Support vectors machine
Classification code:408.2  Structural Members and Shapes - 631.1  Fluid Flow, General - 723  Computer Software, Data Handling and Applications - 804  Chemical Products Generally
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 136>
 
Accession number:20224012832500
Title:Unobtrusive Sleep-Wake Discrimination Based on Arched Carbon Fiber Structure Aided Highly Sensitive under Mattress MZI-BCG Sensor and SVM
Authors:Xu, Wei (1, 2); Han, Shuying (3, 9); Sun, Wenye (4); Dong, Bo (5); Yu, Changyuan (6, 7); Zhao, Wei (1, 2, 8); Wang, Yishan (1, 2, 8) 
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 Electronic and Information Engineering, Soochow University, Suzhou; 21513, China; (4) The Second Hospital of Soochow University, Suzhou; 215000, China; (5) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China; (6) The Hong Kong Polytechnic University, Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong; (8) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (9) Anlight Optoelectronic Technology Corporation 
Corresponding authors:Dong, Bo(dbo1978@163.com); Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:2021 Opto-Electronics and Communications Conference, OECC 2021
Abbreviated source title:Opto-Electron. Commun. Conf., OECC
Part number:1 of 1
Issue title:2021 Opto-Electronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Language:English
ISBN-13:9781943580927
Document type:Conference article (CA)
Conference name:2021 Opto-Electronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Hong Kong, Hong kong
Conference code:182432
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">A compact arched carbon fiber structure aided fiber Mach-Zehnder interferometer (MZI) ballistocardiogram (BCG) sensor is designed and presented, which is used to realize unobtrusive sleep-wake discrimination combining cardiopulmonary coupling (CPC) and support vector machine (SVM) algorithm with high sensitivity and accuracy.<br/></div> &copy; 2021 The Author(s) OCIS codes: 280.1415, 120.7280, 120.3180
Number of references:5
Main heading:Support vector machines
Controlled terms:Arches - Carbon fibers - Wakes
Uncontrolled terms:Carbon fibre structure - Fiber Mach-Zehnder interferometers - High sensitivity - High-accuracy - Sleep/wake - Support vector machines algorithms - Support vectors machine
Classification code:408.2  Structural Members and Shapes - 631.1  Fluid Flow, General - 723  Computer Software, Data Handling and Applications - 804  Chemical Products Generally
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 137>
 
Accession number:20220411504435
Title:Genetic Deep Learning for Photonic Device Inverse Design
Authors:Ren, Yangming (1); Zhang, Lingxuan (1); Zhang, Wenfu (1); Sun, Xiaochen (1) 
Author affiliation:(1) Xi'an Institute Of Optics And Precision Mechanics, State Key Laboratory Of Transient Optics And Photonics, Xi'an, China 
Source title:2021 IEEE Photonics Conference, IPC 2021 - Proceedings
Abbreviated source title:IEEE Photonics Conf., IPC - Proc.
Part number:1 of 1
Issue title:2021 IEEE Photonics Conference, IPC 2021 - Proceedings
Issue date:2021
Publication year:2021
Language:English
ISBN-13:9781665416016
Document type:Conference article (CA)
Conference name:2021 IEEE Photonics Conference, IPC 2021
Conference date:October 18, 2021  -  October 21, 2021
Conference location:Virtual, Online, Canada
Conference code:174006
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">We demonstrate an inverse design method by combining deep neural networks and genetic optimization. The method significantly reduces the training data compared with existing methods. The method is adopted to design some ultra-compact photonic devices to show its high computing efficiency and great flexibility.<br/></div> &copy; 2021 IEEE.
Number of references:6
Main heading:Photonic devices
Controlled terms:Deep neural networks - Design - Inverse problems - Silicon photonics - Learning systems
Uncontrolled terms:Computing efficiency - Genetic optimization - Inverse design methods - Inverse designs - Neural network optimization - Photonics devices - Training data
Classification code:461.4  Ergonomics and Human Factors Engineering - 741.1  Light/Optics - 741.3  Optical Devices and Systems
DOI:10.1109/IPC48725.2021.9593021
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 138>
 
Accession number:20211910318664
Title:Diode-pumped SESAM mode-locked low-repetition-rate Tm:CALGO picosecond laser at 1968 nm
Authors:Guo, Lei (1, 2, 3); Yang, Yaling (1, 2, 3); Zhao, Shengzhi (3); Li, Tao (3); Qiao, Wenchao (3, 4); Wang, Ruihua (2); Zhang, Baitao (2, 6); Yang, Kejian (2, 4, 5, 6); He, Jingliang (2, 6); Li, Xun (7) 
Author affiliation:(1) School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan; 232001, China; (2) Institute of Novel Semiconductors, State Key Laboratory of Crystal Materials, Shandong University, Jinan; 250100, China; (3) School of Information Science and Engineering, Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao; 266237, China; (4) Shenzhen Research Institute of Shandong University, Shenzhen; 518057, China; (5) State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan; 030006, China; (6) Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan; 250358, China; (7) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Yang, Kejian(k.j.yang@sdu.edu.cn)
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:142
Issue date:October 2021
Publication year:2021
Article number:107195
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">A diode-pumped SESAM continuous-wave mode-locked (CWML) Tm:CALGO laser is demonstrated at a new center wavelength of 1968 nm based on a ultra-long Z-shaped folding cavity configuration. A total maximum dual-output power of 328 mW is achieved with a pulse duration of 33.2 ps at a repetition rate of 38.86 MHz, corresponding to a maximum single pulse energy of 4.2 nJ.<br/></div> &copy; 2021 Elsevier Ltd
Number of references:17
Main heading:Picosecond lasers
Controlled terms:Pulse repetition rate - Pumping (laser)
Uncontrolled terms:Center-wavelength - Continuous wave modes - Diode-pumped - Foldings - Low repetition rate - Mode-locked - Picosecond laser - SESAM - Tm:CALGO - Ultra longs
Classification code:744.1  Lasers, General
Numerical data indexing:Energy 4.20E-09J, Frequency 3.886E+07Hz, Power 3.28E-01W, Size 1.968E-06m, Time 3.32E-11s
DOI:10.1016/j.optlastec.2021.107195
Funding details:  Number: JCYJ 20180305163932273, Acronym: -, Sponsor: -;Number: KF201908, Acronym: -, Sponsor: -;Number: 2017CXCC0808, Acronym: -, Sponsor: Key Technology Research and Development Program of Shandong;Number: 61775119, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2017YFB0405204, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;Number: S2019-YF-ZDCXL-ZDLGY-0253, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:This work was partially supported by Scientific Research Foundation of Anhui University of Science and Technology, National Key Research and Development Program of China (2017YFB0405204), National Natural Science Foundation of China (NSFC) (No.61775119), Key research and development program of Shandong Province (2017CXCC0808), Shenzhen Science and Technology Research and Development Funds (JCYJ 20180305163932273), the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices (KF201908), and Key Research and Development Program of Shaanxi Province (S2019-YF-ZDCXL-ZDLGY-0253).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 139>
 
Accession number:20224012832605
Title:Non-invasive Highly Sensitive under Mattress Vital Signs Monitoring Based on Fiber Sagnac Loop
Authors:Zeng, Huaili (1); Xu, Wei (2, 3); Dong, Bo (4); Yu, Changyuan (6, 7); Zhao, Wei (2, 3, 5); Wang, Yishan (2, 3, 5); Sun, Wenye (8) 
Author affiliation:(1) School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu; 611731, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (6) The Hong Kong Polytechnic University, Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong, Hong Kong; (8) The Second Hospital of Soochow University, Suzhou; 215000, China 
Corresponding author:Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:2021 Opto-Electronics and Communications Conference, OECC 2021
Abbreviated source title:Opto-Electron. Commun. Conf., OECC
Part number:1 of 1
Issue title:2021 Opto-Electronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Language:English
ISBN-13:9781943580927
Document type:Conference article (CA)
Conference name:2021 Opto-Electronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Hong Kong, Hong kong
Conference code:182432
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">A non-invasive highly sensitive under mattress vital signs monitoring system is proposed for real-time and long-term respiration and heartbeat monitoring, which is based on Sagnac loop and polarization-maintaining fiber.<br/></div> &copy; 2021 OSA.
Number of references:3
Main heading:Patient monitoring
Controlled terms:Optical fiber communication - Polarization-maintaining fiber
Uncontrolled terms:Fiber sagnac loops - Heartbeat monitoring - Monitoring system - Polarization maintaining fibre - Real- time - Respiration monitoring - Sagnac loop - Vital signs monitoring
Classification code:461.6  Medicine and Pharmacology - 717.1  Optical Communication Systems - 741.1.2  Fiber Optics
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 140>
 
Accession number:20214811222113
Title:Non-invasive highly sensitive under mattress vital signs monitoring based on fiber sagnac loop
Authors:Zeng, Huaili (1); Xu, Wei (2, 3); Dong, Bo (4); Yu, Changyuan (6, 7); Zhao, Wei (2, 3, 5); Wang, Yishan (2, 3, 5); Sun, Wenye (8) 
Author affiliation:(1) School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu; 611731, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) College of new Materials and new Energy, Shenzhen Technology University, Shenzhen; 518118, China; (5) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; (6) The Hong Kong Polytechnic University, Shenzhen Research Institute, Guangdong, Shenzhen, China; (7) Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong; (8) The Second Affiliated Hospital of Soochow University, Suzhou; 215000, China 
Corresponding authors:Dong, Bo(dbo1978@163.com); Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:Optics InfoBase Conference Papers
Abbreviated source title:Opt. InfoBase Conf. Pap
Part number:1 of 1
Issue title:Optoelectronics and Communications Conference, OECC 2021
Issue date:2021
Publication year:2021
Article number:JS3F.14
Language:English
ISBN-13:9781557528209
Document type:Conference article (CA)
Conference name:26th Optoelectronics and Communications Conference, OECC 2021
Conference date:July 3, 2021  -  July 7, 2021
Conference location:Virtual, Online, China
Conference code:174150
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">A non-invasive highly sensitive under mattress vital signs monitoring system is proposed for real-time and long-term respiration and heartbeat monitoring, which is based on Sagnac loop and polarization-maintaining fiber.<br/></div> &copy; OSA 2021, &copy; 2021 The Author(s)
Number of references:3
Main heading:Polarization-maintaining fiber
Controlled terms:Patient monitoring - Optical fiber communication
Uncontrolled terms:Fiber sagnac loops - Heartbeat monitoring - Monitoring system - Polarization maintaining fibre - Real- time - Respiration monitoring - Sagnac loop - Vital signs monitoring
Classification code:461.6  Medicine and Pharmacology - 717.1  Optical Communication Systems - 741.1.2  Fiber Optics
Funding details:  Number: 15200718, Acronym: -, Sponsor: -;Number: 61971372,U1701661, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: &#30740;&#31350;&#36039;&#21161;&#23616;, Sponsor: Research Grants Council, University Grants Committee;Number: SDFEYQN2020, Acronym: -, Sponsor: Second Affiliated Hospital of Soochow University;
Funding text:This work was supported by the Research Grants Council, University Grants Committee of Hong Kong (Grant 15200718) and the National Natural Science Foundation of China (U1701661, 61971372), the Advanced Research Fund of the Second Affiliated Hospital of Soochow University (Grant SDFEYQN2020).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 141>
 
Accession number:20212510523132
Title:Aerial Infrared Object Tracking via an improved Long-term Correlation Filter with optical flow estimation and SURF matching
Authors:Wang, Xiaotian (1); Zhang, Kai (1); Zhang, Ximing (2); Li, Shaoyi (1); Yan, Jie (1) 
Author affiliation:(1) School of Astronautics, Northwestern Polytechnical University, Xi'an; 710072, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Zhang, Kai(singlechip@163.com)
Source title:Infrared Physics and Technology
Abbreviated source title:Infrared Phys Technol
Volume:116
Issue date:August 2021
Publication year:2021
Article number:103790
Language:English
ISSN:13504495
CODEN:IPTEEY
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">At present, there are many excellent algorithms in the field of visual object tracking. The correlation filter algorithms are more suitable for infrared object tracking, for the tracking performance is the best. Especially, the long-term correlation tracking has received much attention, owing to its ability to handle the problems of universal tracking (e.g., slight deformation, small-displacement motion, partial occlusion and out of view). However, there are three imperfections such that it fails to solve the problem of rapid motion, it cannot cope with the problem of boundary effect perfectly, and it has poor tracking effect in the case of severe occlusion and severe deformation. Aiming at the problem of rapid motion, the FlowNet 2.0 is introduced to accomplish optical flow estimation, offering motion information and predicting trajectory change process. Aiming to address the concern of boundary effect perfectly, the adjustable Gaussian window is effective to separate the object and the background, improving classifier discrimination. Aiming at the issue of poor tracking effect in the case of severe occlusion and severe deformation, the SURF feature-based matching method is effective to accurately track object and improve the infrared object tracking performance. In addition, the ratio between average peak-to-correlation energy (APCE) and its historical average, as a further complement of maximum response, is introduced to achieve the online updating mechanism, jointly determining whether the tracker needs to be updated, the SURF matching needs to be carried out or the tracker needs to be initialized by re-detector. Our algorithm is validated on synthetic infrared aerial object image sequences, real infrared thermal aerial object image sequences and a public database named AMCOM FLIR respectively. The extensive experimental testify that our improved approach achieves an optimal effect for aerial infrared object tracking in terms of precision plot, success plot and speed.<br/></div> &copy; 2021
Number of references:41
Main heading:Antennas
Controlled terms:Optical flows - Tracking (position) - Optical correlation - Deformation
Uncontrolled terms:Average peak-to-correlation energy criteria - Boundary effects - Correlation filters - Infrared aerial object tracking - Infrared object tracking - Long-term correlations - Matchings - Optical flow estimation - Rapid motions - Tracking performance
Classification code:741.1  Light/Optics
DOI:10.1016/j.infrared.2021.103790
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 142>
 
Accession number:20214010966294
Title:Temporal Constraint Background-Aware Correlation Filter with Saliency Map
Authors:Liao, Jiawen (1); Qi, Chun (2); Cao, Jianzhong (1) 
Author affiliation:(1) Department of xi'An, Institute of Optics and Precision Mechanics, Xi'an; 710119, China; (2) School of Electronics and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China 
Corresponding author:Liao, Jiawen(liaojiawen@126.com)
Source title:IEEE Transactions on Multimedia
Abbreviated source title:IEEE Trans Multimedia
Volume:23
Issue date:2021
Publication year:2021
Pages:3346-3361
Language:English
ISSN:15209210
E-ISSN:19410077
CODEN:ITMUF8
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">Correlation filter (CF) based trackers have recently drawn great attention in visual tracking community due to their impressive performance, and computational efficiency on benchmark datasets. However, the performance of most existing trackers using correlation filter is hampered by two aspects: i) Included background information in the selected rectangular target patch is considered as part of the target, and they are treated as important as the real target in training new filter model, it causes the filter easily drift when target shape changes dramatically. ii) Existing filters use a moving average operation with an empirical weight to update the filter model in each frame, such per frame adaptation constantly introduces new information of the target patch, but never consider the consistence of the historical information, and the newly obtained one, further increases the risk of drifting. This paper presents a new framework including saliency map, and a novel CF regression model. We reformulate the original optimization problem, and provide a closed form solution for multidimensional features which is solved efficiently using alternating direction method of multipliers (ADMM), and accelerated using Sherman-Morrison lemma, our algorithm as a new framework can be easily integrated into CF base trackers to boost their tracking performance. We perform comprehensive experiments on five benchmarks: OTB-2015, VOT2016, VOT2018, UAV123, and TempleColor-128. Results show that the proposed method performs favorably against lots of state-of-the-art methods with a speed close to real-time. Our method with deep features performs much better on all 5 datasets.<br/></div> &copy; 1999-2012 IEEE.
Number of references:57
Main heading:Computational efficiency
Controlled terms:Regression analysis - Benchmarking
Uncontrolled terms:Correlation filters - Drift - Filter model - Filter-based - Performance - Saliency - Saliency map - Sherman-morrison - Temporal constraints - Visual Tracking
Classification code:922.2  Mathematical Statistics
DOI:10.1109/TMM.2020.3023794
Funding details:  Number: 51905529,61572395,61675161, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:Manuscript received August 12, 2019; revised May 20, 2020; accepted September 3, 2020. Date of publication September 14, 2020; date of current version September 24, 2021. This work was supported by the National Natural Science Foundation of China under Grants 61572395, 61675161, and 51905529. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Elisa Ricci. (Corresponding author: Jiawen Liao.) Jiawen Liao and Jianzhong Cao are with the Department of Xi&rsquo;an Institute of Optics and Precision Mechanics, Xi&rsquo;an 710119, China (e-mail: liaojiawen@126.com; cjz@opt.ac.cn).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 143>
 
Accession number:20220211444592
Title:Application of machine learning in the alignment of off-Axis optical system
Authors:Yu, Lei (1); Ma, Caiwen (1); Fu, Xing (1); Yin, Yamei (1); Cao, Mingqiang (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Cas, NO.17 Xinxi Road, Xi'an Hi-Tech Industrial Development Zone, Xi'an; Shaanxi; 710119, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12069
Part number:1 of 1
Issue title:AOPC 2021: Novel Technologies and Instruments for Astronomical Multi-Band Observations
Issue date:2021
Publication year:2021
Article number:120690P
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650138
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Novel Technologies and Instruments for Astronomical Multi-Band Observations, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175885
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Coaxial optical system has a symmetry of revolution. Alignment for this kind of optical system is easy. The desired image quality can be rapidly converged. As for off-Axis optical system, traditional optical alignment method can not be used due to the loss of rotational symmetry. Low initial position accuracy makes installation and adjustment more difficult than usual. In this paper, we aim to solve the alignment problem for off-Axis optical system with the help of machine learning and its powerful numerical fitting ability. We carried out our research on alignment method for an Gregorian off-Axis system. The location of primary mirror is fixed as the optical reference. Alignment process is to adjust posture of secondary mirror to acquire ideal image quality. We use Zemax and Python co-simulation technology to get simulated data. Then multi-layer artificial neural network is utilized to fit the mathematical relationship between misalignments and Zernike coefficients. Given the coefficients, the misalignments can be calculated by the neural network. Finally we conduct alignment experiment to verify the proposed method. The result has proved that this method is a fast and efficient alignment solution for the off-Axis optical systems.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:9
Main heading:Machine learning
Controlled terms:Computer software - Multilayer neural networks - Mirrors - Network layers - Image quality - Alignment - Optical systems
Uncontrolled terms:Alignment methods - Coaxial optical systems - Desired image qualities - Machine-learning - Neural-networks - Off-axis - Off-axis optical system - Optical alignments - Position accuracy - Rotational symmetries
Classification code:601.1  Mechanical Devices - 723  Computer Software, Data Handling and Applications - 723.4  Artificial Intelligence - 741.3  Optical Devices and Systems
DOI:10.1117/12.2606474
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 144>
 
Accession number:20213110717603
Title:Two-center interference and stereo Wigner time delay in photoionization of asymmetric molecules
Authors:Liao, Yijie (1); Zhou, Yueming (1); Pi, Liang-Wen (2, 3); Ke, Qinghua (1); Liang, Jintai (1); Zhao, Yong (1); Li, Min (1); Lu, Peixiang (1, 4, 5) 
Author affiliation:(1) School of Physics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan; 430074, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Science, Beijing; 100049, China; (4) Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan; 430205, China; (5) CAS Center for Excellence in Ultra-intense Laser Science, Shanghai; 201800, China 
Source title:Physical Review A
Abbreviated source title:Phys. Rev. A
Volume:104
Issue:1
Issue date:July 2021
Publication year:2021
Article number:013110
Language:English
ISSN:24699926
E-ISSN:24699934
Document type:Journal article (JA)
Publisher:American Physical Society
Abstract:<div data-language="eng" data-ev-field="abstract">We present numerical simulations of the time delay in photoemission of asymmetric diatomic molecules using the technique of reconstruction of attosecond beating by interference of two-photon transitions (RABITT) by solving the time-dependent Schr&ouml;dinger equation. Our results show an obvious time delay between photoelectrons emitted to the left and right and this relative time delay oscillates as the photoelectron energy changes. More interestingly, the amplitude of this oscillation increases when the asymmetry degree of diatomic molecules decreases. With the method of the selected continuum wave functions, we calculate the Wigner time delay in photoionization. The obtained stereo Wigner time delay also oscillates with photoelectron energy. This oscillation is traced back to two-center interferences and it could explain the relative time delay in the RABITT measurement. Furthermore, our results indicate that the continuum-continuum time delay in photoemission of heteronuclear molecules is asymmetric.<br/></div> &copy; 2021 American Physical Society
Number of references:64
Main heading:Time delay
Controlled terms:Photoionization - Photons - Timing circuits - Wave functions - Photoemission - Molecules - Photoelectrons
Uncontrolled terms:Asymmetric molecules - Diatomic molecules - Dinger equation - Heteronuclear molecules - Photoelectron energy - Relative time delays - Two-center interference - Two-photon transitions
Classification code:701.1  Electricity: Basic Concepts and Phenomena - 711  Electromagnetic Waves - 713  Electronic Circuits - 713.4  Pulse Circuits - 741.1  Light/Optics - 802.2  Chemical Reactions - 921  Mathematics - 931.3  Atomic and Molecular Physics
DOI:10.1103/PhysRevA.104.013110
Funding details:  Number: 11874163,12021004, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: J19-121-III,S19-001, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2019YFA0308300, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:The authors acknowledge stimulating discussions with Professor Manfred Lein and Dr. Tom&aacute;&scaron; Zimmermann. This work was supported by National Key Research and Development Program of China (Grant No. 2019YFA0308300), National Natural Science Foundation of China (Grants No. 11874163 and No. 12021004), and Chinese Academy of Sciences (Grants No. J19-121-III and No. S19-001).National Basic Research Program of China (973 Program) National Natural Science Foundation of China Chinese Academy of Sciences
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 145>
 
Accession number:20212510529574
Title:Comprehensive risk assessment of transmission lines affected by multi-meteorological disasters based on fuzzy analytic hierarchy process
Authors:Han, Binbin (1); Ming, Zhengfeng (1); Zhao, Yuhu (1); Wen, Tao (1); Xie, Meilin (2) 
Author affiliation:(1) School of Mechanic-Electronic Engineering, Xidian University, Xi'an; 710071, China; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Ming, Zhengfeng(zfming@xidian.edu.cn)
Source title:International Journal of Electrical Power and Energy Systems
Abbreviated source title:Int J Electr Power Energy Syst
Volume:133
Issue date:December 2021
Publication year:2021
Article number:107190
Language:English
ISSN:01420615
CODEN:IEPSDC
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Number of references:43
DOI:10.1016/j.ijepes.2021.107190
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 146>
 
Accession number:20203809183985
Title:Study on the performance of polarization maintaining fiber temperature sensor based on tilted fiber grating
Authors:Zhao, Jun (1, 3); Wang, Hushan (2); Sun, Xiaohan (1) 
Author affiliation:(1) School of Electronic Science and Engineering, Southeast University, Nanjing; 210096, China; (2) Xian Institute of Optics and Precision Mechanics of CAS, Xian; 710119, China; (3) Nanjing Sunlight Information Technology Co., Ltd., Nanjing; 210012, China 
Corresponding author:Zhao, Jun(103200021@seu.edu.cn)
Source title:Measurement: Journal of the International Measurement Confederation
Abbreviated source title:Meas J Int Meas Confed
Volume:168
Issue date:15 January 2021
Publication year:2021
Article number:108421
Language:English
ISSN:02632241
CODEN:MSRMDA
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:A novel functional-type high integration polarization interference fiber temperature sensor based on 45&deg; tilted fiber Bragg grating in-fiber polarizer (TFBG-PIF-TS) is proposed. The accuracy, resolution, stability, linearity and sensitivity of the prototype are tested and compared with PT100, 18B20 as well as polarizing plate based polarization interferometric fiber temperature sensor (PP-PIF-TS). The feasibility of the scheme in the transformer winding temperature monitoring is verified. The results show that the accuracy and resolution of TFBG-PIF-TS reach &plusmn;0.1 &deg;C and 0.01 &deg;C respectively, which has higher resolution, better integration and reliability, and has simple structure, strong anti-vibration and anti-electromagnetic interference abilities. Therefore, the proposed scheme can meet the needs of high voltage, strong magnetic field and other passive precise temperature measurement occasions.<br/> &copy; 2020 Elsevier Ltd
Number of references:24
Main heading:Polarization-maintaining fiber
Controlled terms:Temperature measurement - Electromagnetic pulse - Light polarization - Fiber Bragg gratings - Temperature sensors - Optical instruments
Uncontrolled terms:Fiber temperature sensors - Higher resolution - Polarization interferences - Simple structures - Strong magnetic fields - Temperature monitoring - Tilted fiber Bragg grating - Tilted fiber gratings
Classification code:701  Electricity and Magnetism - 741.1  Light/Optics - 741.1.2  Fiber Optics - 941.3  Optical Instruments - 944.5  Temperature Measuring Instruments - 944.6  Temperature Measurements
Numerical data indexing:Temperature 2.73e+02K
DOI:10.1016/j.measurement.2020.108421
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 147>
 
Accession number:20211110079184
Title:Research on 3D pose measurement algorithm based on binocular vision    (Open Access)
Authors:Shan, Fu Qiang (1); Wang, Feng (1); Zhang, Hai Feng (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of UCAS, University of Chinese Academy of Sciences, Xi'an, Shanxi; 710119, China 
Corresponding author:Zhang, Hai Feng(Zhanghf@opt.ac.cn)
Source title:Journal of Physics: Conference Series
Abbreviated source title:J. Phys. Conf. Ser.
Volume:1792
Part number:1 of 1
Issue:1
Issue title:International Conference on Communications, Information System and Software Engineering, CISSE 2020
Issue date:February 19, 2021
Publication year:2021
Article number:012043
Language:English
ISSN:17426588
E-ISSN:17426596
Document type:Conference article (CA)
Conference name:2020 International Conference on Communications, Information System and Software Engineering, CISSE 2020
Conference date:December 18, 2020  -  December 20, 2020
Conference location:Guangzhou, China
Conference code:167641
Publisher:IOP Publishing Ltd
Abstract:Based on binocular vision, this paper proposes an algorithm for fast and accurate three-dimensional measurement. The binocular 3D measurement system is mainly divided into four parts: binocular calibration, binocular correction, binocular matching and pose calculation. In this paper, an international softwareM is used to achieve camera calibration, the FAST algorithm is used to achieve the extraction of feature points, and the matching method that combines gray-level correlation coefficient (cc) and epipolar constraint is selected. Experiments have verified that this algorithm can accurately achieve three-dimensional pose measurement.<br/> &copy; 2021 Journal of Physics: Conference Series.
Number of references:6
Main heading:Binocular vision
Controlled terms:Binoculars - Calibration - Stereo image processing
Uncontrolled terms:3-D measurement systems - 3D pose measurement - Binocular calibrations - Binocular matching - Camera calibration - Epipolar constraints - Extraction of feature points - Three-dimensional measurements
Classification code:723.2  Data Processing and Image Processing - 741.2  Vision - 741.3  Optical Devices and Systems
DOI:10.1088/1742-6596/1792/1/012043
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Bronze
 
<RECORD 148>
 
Accession number:20211710250118
Title:Spectroscopic properties of ErF<inf>3</inf> doped tellurite-gallium oxyfluoride glass for &sim;3&thinsp;&mu;m laser materials
Authors:Wan, Rui (1, 2); Wang, Pengfei (1, 2); Li, Shengwu (1, 2); Ma, Yuan (1, 2); Zhang, Guangwei (3) 
Author affiliation:(1) State Key Laboratory of Transient Optics and Photonics, Xi&acirc;&euro;&trade;an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi'an; Shaanxi; 710119, China; (2) Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Zhejiang Fountain Aptitude Technology Inc., Hangzhou; 310051, China 
Corresponding author:Wang, Pengfei(pfwang@opt.ac.cn)
Source title:Journal of Applied Physics
Abbreviated source title:J Appl Phys
Volume:129
Issue:15
Issue date:April 21, 2021
Publication year:2021
Article number:153105
Language:English
ISSN:00218979
E-ISSN:10897550
CODEN:JAPIAU
Document type:Journal article (JA)
Publisher:American Institute of Physics Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">ErF<inf>3</inf>-doped TeO<inf>2</inf>-Ga<inf>2</inf>O<inf>3</inf>-BaF<inf>2</inf>-AlF<inf>3</inf>-Y<inf>2</inf>O<inf>3</inf> (TGBAY) glasses with high fluorescence efficiency and a high thermal damage threshold were developed for potential mid-infrared fiber laser applications. A model 2.7-&mu;m fiber laser based on this material was analyzed using rate and propagation equations. Under 808 and 980&thinsp;nm laser pumping, fluorescence emissions with central wavelength at 1.55 and 2.73&thinsp;&mu;m were detected. Based on the Judd-Ofelt (J-O) theory, the intensity parameters (&Omega;&lambda;, &lambda;&thinsp;=&thinsp;2, 4, and 6) and radiative transition property were calculated and characterized through absorption and emission spectra. The results indicated that tellurite-gallium oxyfluoride glass had a high glass transition temperature (T<inf>g</inf>, &sim;391&thinsp;&deg;C), large emission cross sections at 1.55&thinsp;&mu;m (6.32&thinsp;&times;&thinsp;10<sup>&minus;21</sup>&thinsp;cm<sup>2</sup>) and 2.73&thinsp;&mu;m (9.68&thinsp;&times;&thinsp;10<sup>&minus;21</sup>&thinsp;cm<sup>2</sup>) as well as a longer fluorescence lifetime (6.84&thinsp;ms at 1.55&thinsp;&mu;m and 262&thinsp;&mu;s at 2.73&thinsp;&mu;m) relative to the conventional Er<sup>3+</sup>-doped tellurite glass. The temperature dependence of the emission spectra indicated that TGBAY-2Er glass was more favorable to achieve infrared emission at low temperatures. Numerical simulation revealed the feasibility of achieving a &sim;2.7&thinsp;&mu;m fiber laser operation based on the developed Er<sup>3+</sup>-doped tellurite-gallium oxyfluoride glass fiber.<br/></div> &copy; 2021 Author(s).
Number of references:66
Main heading:Fiber lasers
Controlled terms:Aluminum compounds - Fluorescence - Pumping (laser) - Barium compounds - Glass - Temperature distribution - Emission spectroscopy - Erbium compounds - Tellurium compounds - Gallium compounds  - Glass transition - Judd-Ofelt theory
Uncontrolled terms:Absorption and emission spectra - Emission cross section - Fluorescence efficiency - Fluorescence lifetimes - High-glass transition temperatures - Radiative transitions - Spectroscopic property - Temperature dependence
Classification code:641.1  Thermodynamics - 741.1  Light/Optics - 744.1  Lasers, General - 744.4  Solid State Lasers - 802.3  Chemical Operations - 812.3  Glass - 931.3  Atomic and Molecular Physics
Numerical data indexing:Size 2.70e-06m
DOI:10.1063/5.0047010
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 149>
 
Accession number:20213110715981
Title:Optical path pointing error and coaxiality analysis of APT system of space laser communication terminal    (Open Access)
Authors:Furui, Zhang (1); Ping, Ruan (2); Junfeng, Han (2) 
Author affiliation:(1) College of Optoelectronic Engineering, Xi'an Technological University, Xi'an; 710021, China; (2) Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China 
Corresponding author:Furui, Zhang(jiffring@126.com)
Source title:Optica Applicata
Abbreviated source title:Opt Appl
Volume:51
Issue:2
Issue date:2021
Publication year:2021
Pages:203-222
Language:English
ISSN:00785466
E-ISSN:18997015
CODEN:OPAPBZ
Document type:Journal article (JA)
Publisher:Wroc&lstrok;aw University of Science and Technology
Abstract:<div data-language="eng" data-ev-field="abstract">Precision beam pointing is the key indicator for APT (acquisition, pointing and tracking) system in space laser communication. The laser travels inside the optical system and the pointing vector will be affected by an assembly error of the axis and reflectors. In this paper, the model of the optical path pointing error and coaxiality error induced by the assembly error are established; the error distribution is given and a quantitative analysis is performed. The results show that the magnitude of pointing error is affected by the axis assembling error greatly but its distribution is susceptible to the reflector assembly error. Finally, the correction of coaxiality is performed and tested. The experimental results show that the coaxiality error can be greatly improved and the mean value of the coaxiality error of a beacon path and a signal path are 14 and 9.6 &mu;rad, respectively, which meets the requirements. This work can provide guidance for design and assembly of the APT and contribute to the improvement of its pointing performance.<br/></div> &copy; 2021 Wroc&Aring;&sbquo;aw University of Science and Technology. All rights reserved.
Number of references:14
Main heading:Errors
Controlled terms:Optical communication - Reflection - Optical systems
Uncontrolled terms:Acquisition , pointing and tracking - Assembling errors - Assembly error - Design and assemblies - Error distributions - Pointing errors - Provide guidances - Space laser communication
Classification code:717.1  Optical Communication Systems - 741.3  Optical Devices and Systems
DOI:10.37190/oa210205
Funding details:  Number: Y655811213, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:Acknowledgement &ndash; This article was supported by the 135 project of the Institute of Chinese Academy of Sciences (No. Y655811213). The coaxiality experiments were carried out in the key laboratory of space precision measurement technology, Chinese Academy of Sciences.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Bronze, Green
 
<RECORD 150>
 
Accession number:20210083991
Title:Radio frequency spectrum analyzer with a 5 THz bandwidth based on nonlinear optics in a CMOS-compatible high-index doped silica waveguide
Authors:Li, Yuhua (1, 2); Kang, Zhe (3, 4); Zhu, Kun (2); Ai, Shiqi (2); Wang, Xiang (5); Davidson, Roy R. (5); Wu, Yan (1); Morandotti, Roberto (6); Little, Brent E. (7); Moss, David J. (8); Chu, Sai Tak (2) 
Author affiliation:(1) Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou; Zhejiang; 310018, China; (2) Department of Physics, City University of Hong Kong, Kowloon Tong; 999077, Hong Kong; (3) Ningbo Research Institute, Zhejiang University, Ningbo; 310000, China; (4) Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang University, Hangzhou; 315000, China; (5) QXP Technology, Xi'an; 710311, China; (6) INRS-&Eacute;nergie, Mat&eacute;riaux et T&eacute;l&eacute;communications, Varennes; J3X 1S2, Canada; (7) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (8) Optical Sciences Centre, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia 
Source title:arXiv
Abbreviated source title:arXiv
Issue date:March 18, 2021
Publication year:2021
Language:English
E-ISSN:23318422
Document type:Preprint (PP)
Publisher:arXiv
Abstract:<div data-language="eng" data-ev-field="abstract">We report an all-optical radio-frequency (RF) spectrum analyzer with a bandwidth greater than 5 terahertz (THz), based on a 50-cm long spiral waveguide in a CMOS-compatible high-index doped silica platform. By carefully mapping out the dispersion profile of the waveguides for different thicknesses, we identify the optimal design to achieve near zero dispersion in the C-band. To demonstrate the capability of the RF spectrum analyzer, we measure the optical output of a femtosecond fiber laser with an ultrafast optical RF spectrum in the terahertz regime.<br/></div> &copy; 2021, CC BY.
Number of references:26
Main heading:Spectrum analyzers
Controlled terms:Bandwidth - CMOS integrated circuits - Fiber lasers - Nonlinear optics - Silica - Terahertz waves - Waveguides
Uncontrolled terms:All optical - CMOS Compatible - Dispersion profile - Doped silicas - Higher index - Long spirals - Radio frequency spectrum - Silica waveguide - Spiral waveguides - Tera Hertz
Classification code:711  Electromagnetic Waves - 714.2  Semiconductor Devices and Integrated Circuits - 714.3  Waveguides - 716.1  Information Theory and Signal Processing - 741.1.1  Nonlinear Optics - 744.4  Solid State Lasers
Numerical data indexing:Frequency 5.00E+12Hz, Size 5.00E-01m
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.Preprint ID:2103.10557v1
Preprint source website:https://arxiv.org
Preprint ID type:ARXIV
 
 
<RECORD 151>
 
Accession number:20212110404350
Title:Design of Optical System for Broadband and Integrated AOTF Imaging Spectrometer
Title of translation:&#23485;&#35889;&#27573;&#19968;&#20307;&#21270;AOTF&#25104;&#20687;&#20809;&#35889;&#20202;&#20809;&#23398;&#31995;&#32479;&#35774;&#35745;
Authors:Chang, Lingying (1); Zhang, Qiang (1); Qiu, Yuehong (2) 
Author affiliation:(1) School of Electronic Engineering, Xi'an University of Posts & Telecommunications, Xi'an; 710121, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Source title:Guangxue Xuebao/Acta Optica Sinica
Abbreviated source title:Guangxue Xuebao
Volume:41
Issue:7
Issue date:April 10, 2021
Publication year:2021
Article number:0722002
Language:Chinese
ISSN:02532239
CODEN:GUXUDC
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Acousto-optic tunable filter (AOTF) imaging spectrometer can acquire image, spectrum and polarization information simultaneously. It has been successfully applied to the aerospace, agriculture, forestry, medicine, food safety, and other fields, thus having good development prospects. Optical system is one of the key parts in an AOTF imaging spectrometer to obtain information. Therefore, the optical systems of common AOTF imaging spectrometers are studied in this paper, and the working principle of AOTF and the general design scheme of the spectrometers are introduced. Furthermore, the optical design parameters of the whole system, such as the front, collimating and imaging sub-systems are calculated, and the common-aperture optical system is simulated. The front optical system has an off-axis three-mirror structure based on free-form surface, which matches with the aperture stop of the collimating system, and the collimating and imaging systems are off-axis three-mirror systems with front offset of the aperture stop. The simulation results show that the system has an MTF values close to the diffraction limit and greater than 0.57 at the bands of 0.41.0 &mu;m, 1.03.0 &mu;m, and 3.05.0 &mu;m, a distortion less than 5%, and good imaging quality, in the case of the working band of 0.45.0 &mu;m, F number 5, field of view angle of 5.3&deg;.<br/></div> &copy; 2021, Chinese Lasers Press. All right reserved.
Number of references:32
Main heading:Optical systems
Controlled terms:Surface measurement - Diffraction - Optical design - Spectrometers - Forestry - Mirrors
Uncontrolled terms:Acousto-optic tunable filters - Design parameters - Development prospects - Diffraction limits - Free-form surface - Imaging spectrometers - Mirror structure - Off-axis three mirror system
Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 821  Agricultural Equipment and Methods; Vegetation and Pest Control - 943.2  Mechanical Variables Measurements
Numerical data indexing:Percentage 5.00e+00%
DOI:10.3788/AOS202141.0722002
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 152>
 
Accession number:20215211394017
Title:DNN-Assisted activity classification using fiber interferometer sensor
Authors:Zhu, Guohao (1); Xu, Wei (2, 3); Yu, Cheung Chuen (4); Sun, Wenye (5); Dong, Bo (6); Yu, Changyuan (7, 8); Zhao, Wei (2, 3, 9); Wang, Yishan (2, 3, 9) 
Author affiliation:(1) Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Haina-Intelligent Photonic System Research Center, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing; 341006, China; (5) Second Affiliated Hospital of Soochow University, Suzhou; 215000, China; (6) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China; (7) Hong Kong Polytechnic University Shenzhen Research Institute, Guangdong, Shenzhen, China; (8) Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong; (9) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11894
Part number:1 of 1
Issue title:Optoelectronic Devices and Integration X
Issue date:2021
Publication year:2021
Article number:118941F
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510646377
Document type:Conference article (CA)
Conference name:Optoelectronic Devices and Integration X 2021
Conference date:October 10, 2021  -  October 12, 2021
Conference location:Nantong, China
Conference code:175373
Sponsor:Chinese Optical Society (COS); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Deep Neural Network (DNN) assisted activity monitoring algorithms are investigated, aiming to discriminate three activity states, including presence without movement, nobody in bed, and presence with movement. The signal is collected from a fiber-based Mach-Zehnder Interferometer (MZI) sensor, which is placed under a 20-cm thick mattress. When people are lying on the mattress, cardiopulmonary activities will lead to the change of the phase difference of the MZI optical fiber sensor. In this paper, three kinds of DNNs are developed to investigate the classification performance, including feedforward neural network (FNN), convolutional neural network (CNN), and long short-Term memory network (LSTM). The accuracy of FNN, CNN and LSTM is 95.14%, 99.01%, and 99.37% within one second, respectively. Moreover, LSTM has low time and space complexity and better performance. The algorithms constructed can obtain high accuracy and robustness with low computational overhead and storage consumption and have broad application prospects. What's more, the MZI optical fiber sensor has many advantages such as low cost and anti-electromagnetic interference, which means that the system can be popular in medical treatment and households.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:6
Main heading:Deep neural networks
Controlled terms:Optical fibers - Long short-term memory - Feedforward neural networks - Electromagnetic pulse - Interferometers
Uncontrolled terms:A.Fibres - Activity classifications - Activity monitoring - Convolutional neural network - Fiber interferometers - Interferometer sensors - Long short-term memory network - Mach-Zehnder interferometer sensors - Memory network - Monitoring algorithms
Classification code:461.4  Ergonomics and Human Factors Engineering - 701  Electricity and Magnetism - 741.1.2  Fiber Optics - 941.3  Optical Instruments
Numerical data indexing:Percentage 9.514E+01%, Percentage 9.901E+01%, Percentage 9.937E+01%, Size 2.00E-01m
DOI:10.1117/12.2601294
Funding details:  Number: 61971372, Acronym: -, Sponsor: -;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The authors thank the supports of Grant 15200718 from HK RGC GRF and 61971372 from National Natural Science Foundation of China.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 153>
 
Accession number:20210609894342
Title:Generation and Conversion Dynamics of Dual Bessel Beams with a Photonic Spin-Dependent Dielectric Metasurface
Authors:Li, Tianyue (1); Li, Xingyi (2, 3); Yan, Shaohui (2, 3); Xu, Xiaohao (4); Wang, Shuming (1, 5); Yao, Baoli (2, 3); Wang, Zhenlin (1); Zhu, Shining (1, 5) 
Author affiliation:(1) National Laboratory of Solid-State Microstructures, School of Physics, College of Engineering and Applied Sciences, Nanjing University, Nanjing; 210093, China; (2) State Key Laboratory of Transient Optics, Photonics xi'An Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Nanophotonics, Jinan University, Guangzhou; 511443, China; (5) Key Laboratory of Intelligent Optical Sensing and Manipulation Ministry of Education, Nanjing; 210093, China 
Corresponding author:Wang, Shuming(wangshuming@nju.edu.cn)
Source title:Physical Review Applied
Abbreviated source title:Phys. Rev. Appl.
Volume:15
Issue:1
Issue date:January 2021
Publication year:2021
Article number:A56
Language:English
E-ISSN:23317019
Document type:Journal article (JA)
Publisher:American Physical Society
Abstract:A Bessel beam has the properties of propagation invariance and a self-healing effect, leading to a variety of interesting phenomena and applications. Recently, as a planar diffractive element with miniaturized size, metasurfaces are widely employed to manipulate light in the subwavelength region, including generating a Bessel beam. However, such a metasurface-generated Bessel beam allows output light with no tunable functions. Here, with the interplay of the geometric phase and the dynamic phase, we propose a method to generate and allow conversion from any orthogonal polarizations to independent Bessel beams with a single-layer dielectric metasurface. The simulation results indicate that the arbitrary conversion between different Bessel beams is related to the spin-dependent orbit motion caused by the tight-focusing effect, leading to the singularity of the spot. This physical mechanism is well studied and the theoretical model for revealing the dependence of different incident polarization on the conversion dynamics is presented. Our approach paves a way for efficient generation and multifunctional applications, ranging from high-numerical-aperture devices to compact nanophotonic platforms for spin-dependent structured beams.<br/> &copy; 2021 American Physical Society.
Number of references:39
Main heading:Laser beams
Controlled terms:Spin dynamics - Incident light - Light sources - Bessel functions - Polarization
Uncontrolled terms:Diffractive element - High numerical apertures - Incident polarization - Orthogonal polarizations - Physical mechanism - Propagation invariance - Self healing effect - Theoretical modeling
Classification code:741.1  Light/Optics - 744.8  Laser Beam Interactions - 921  Mathematics - 931.3  Atomic and Molecular Physics
DOI:10.1103/PhysRevApplied.15.014059
Funding details:  Number: 2016YFA0202103,2017YFA0303700,2017YFA0303702, Acronym: -, Sponsor: -;Number: 11621091,11674166,11674167,11674168,11774162,11774164,11822406,11834007,91850204, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The authors are grateful that this work is supported by the National Key R&D Program of China (Grants No. 2017YFA0303700, No. 2017YFA0303702, and No. 2016YFA0202103) and the National Natural Science Foundation of China (Grants No. 11822406, No. 11834007, No. 11774162, No. 11674166, No. 11674167, No. 11674168, No. 11621091, No. 11774164, and No. 91850204).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 154>
 
Accession number:20215211394018
Title:SAHS detection using contact-free MZI-BCG sensor
Authors:Jiang, Xinning (1); Xu, Wei (2, 3); Yu, Cheung Chuen (4); Sun, Wenye (5); Dong, Bo (6); Yu, Changyuan (7, 8); Zhao, Wei (2, 3, 9); Wang, Yishan (2, 3, 9) 
Author affiliation:(1) School of Electronic and Information Engineering, Soochow University, 215006, China; (2) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Haina-Intelligent Photonic System Research Center, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing; 341006, China; (5) Second Affiliated Hospital of Soochow University, Suzhou; 215000, China; (6) College of New Materials and New Energy, Shenzhen Technology University, Shenzhen; 518118, China; (7) Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen; Guangdong, China; (8) Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong; (9) Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China 
Corresponding author:Yu, Changyuan(changyuan.yu@polyu.edu.hk)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11894
Part number:1 of 1
Issue title:Optoelectronic Devices and Integration X
Issue date:2021
Publication year:2021
Article number:118941G
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510646377
Document type:Conference article (CA)
Conference name:Optoelectronic Devices and Integration X 2021
Conference date:October 10, 2021  -  October 12, 2021
Conference location:Nantong, China
Conference code:175373
Sponsor:Chinese Optical Society (COS); The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Real-Time SAHS events detection system during sleep is proposed and investigated based on contact-free Mach-Zehnder Interferometer ballistocardiograph (MZI-BCG) senor, which is placed under the mattress. The breath activity influences the optical phase difference of the MZI which is demodulated with 3&lowast;3 optical coupler. In this paper, three SAHS events are successfully detected, including OSAS (Obstructive sleep apnea syndrome), CSAS (Central sleep apnea syndrome) and MSAS (Mixed sleep apnea syndrome). The proposed system is simple, cost-effective and non-invasive, which has great potential application in home monitoring<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:4
Main heading:Sleep research
Controlled terms:Cost effectiveness
Uncontrolled terms:BCG - Contact free - Detection system - Events detection - MZI - Optical coupler - Optical phase difference - Real- time - SAHS - Sleep apnea syndrome
Classification code:461.4  Ergonomics and Human Factors Engineering - 911.2  Industrial Economics
DOI:10.1117/12.2601391
Funding details:  Number: 61971372, Acronym: -, Sponsor: -;Number: -, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The authors thank the supports of Grant 15200718 from HK RGC GRF and 61971372 from National Natural Science Foundation of China.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 155>
 
Accession number:20221311871478
Title:Polarimetric dehazing utilizing Vis-NIR spectral image fusion
Authors:Xia, Pu (1); Chen, Xiaolai (1); Gao, Xiaohui (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Key Laboratory of Spectral Imaging Technology, Xi'an; 710119, China 
Corresponding author:Xia, Pu(xiapu@opt.ac.cn)
Source title:Proceedings - 2021 International Conference on Intelligent Computing, Automation and Systems, ICICAS 2021
Abbreviated source title:Proc. - Int. Conf. Intell. Comput., Autom. Syst., ICICAS
Part number:1 of 1
Issue title:Proceedings - 2021 International Conference on Intelligent Computing, Automation and Systems, ICICAS 2021
Issue date:2021
Publication year:2021
Pages:48-54
Language:English
ISBN-13:9781665428101
Document type:Conference article (CA)
Conference name:2021 International Conference on Intelligent Computing, Automation and Systems, ICICAS 2021
Conference date:December 29, 2021  -  December 31, 2021
Conference location:Chongqing, China
Conference code:177603
Sponsor:Chongqing Academy of Big Data; Chongqing Big Data Technology Innovation Alliance; Chongqing Technology and Business University; Universidad Politecnica Salesiana
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">Polarimetric dehazing methods have good ability in restoring images contaminated by haze. But noise and color distortion come along with the dehazing process, and those methods lack the ability to recover targets of long-distance. Our previous study has shown that the penetration ability of light is related with wavelength, light of long wavelength, especially in the infrared band, receives less attenuation from haze. Based on that fact, we decompose the dehazing process into 16 different spectral bands to achieve the optimized dehazing performance. An infrared band is added to enhance the dehazing performance in short-wavelength channels, thus increases the range of visibility and corrects the color distortion. The dehazed image is reconstructed through image fusion of the dehazed bands. Experimental analyses reveal enhanced details and reduced noise of dehazed images. Particularly, our method works well in retaining the color information of haze contaminated images. The amount of blueshift can be reduced by 71% at least.<br/></div> &copy; 2021 IEEE.
Number of references:21
Main heading:Demulsification
Controlled terms:Color - Image analysis - Image enhancement - Image fusion - Image reconstruction - Polarimeters - Spectroscopy - Spectrum analysis
Uncontrolled terms:Color distortions - Color image restoration - Dehazing - Haze removal - Images processing - Infrared bands - Noise distortions - Performance - Polarimetric imaging - Spectral image fusions
Classification code:723.2  Data Processing and Image Processing - 741.1  Light/Optics - 802.3  Chemical Operations - 941.3  Optical Instruments
Numerical data indexing:Percentage 7.10E+01%
DOI:10.1109/ICICAS53977.2021.00017
Funding details:  Number: 2015DFA10140, Acronym: -, Sponsor: -;Number: 61905275, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XAB2017B23, Acronym: -, Sponsor: West Light Foundation of the Chinese Academy of Sciences;
Funding text:ACKNOWLEDGMENT This work was supported by the International Cooperation Program of China (2015DFA10140), National Nature Science Foundation of China (61905275), Western Lights Foundation of Chinese Academy of Sciences (XAB2017B23), and the Open Research Fund of CAS Key Laboratory of Spectral Imaging Technology.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 156>
 
Accession number:20211410162270
Title:Research on precision measurement and assembly technology of fery prism
Authors:Fu, Xihong (1, 2); Li, Libo (1, 2); Ma, Nana (1); Chou, Xiaoquan (1); Kang, Shifa (1); Li, Hua (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) Key Laboratory of Spectral Imaging Technology of CAS, Xi'an; 710119, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11763
Part number:1 of 1
Issue title:Seventh Symposium on Novel Photoelectronic Detection Technology and Applications
Issue date:2021
Publication year:2021
Article number:1176304
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643611
Document type:Conference article (CA)
Conference name:7th Symposium on Novel Photoelectronic Detection Technology and Applications
Conference date:November 5, 2020  -  November 7, 2020
Conference location:Kunming, China
Conference code:167886
Sponsor:Chinese Society for Optical Engineering (CSOE); Science and Technology on Low-light-level Night Vision Laboratory
Publisher:SPIE
Abstract:From the special structure, processing technology and function of Fery prism in spectral imager, and the structural design features of a certain research spectral imager project, an assembly measurement method based on CMM, PSM and high precision rotating device is proposed, which combines the principles of space measurement, point source collimation and 3D mathematical modeling, the on-line inspection and alignment technology of Fery prism assembly are studied. Firstly, the key parameters of a single curved prism, such as curvature radius of surface, spherical coordinates, deflection angle of optical axis and off-axis are measured by CMM. Secondly, the Fery prism assembly is assembled by CMM, PSM and high precision rotating device. The space coordinates between the components are measured by CMM, and the position of the Spherical Center and the deflection angle are precisely determined by point source microscope. Finally, the actual assembly effect of the Fery Prism Assembly is reappeared through the data processing of the computer software, and the directional offset between the Fery prism assembly and the theoretical model is given, the precision assembly of Fery prism aseembly is completed by azimuth rotation and trimming mat processing. It provides a new technology method for on-line precision assembly of Fery prism module in Spectral Imager, which has strong operability and high measurement precision, and is suitable for precision detection and assembly of Fery prism module of different sizes.<br/> &copy; 2021 SPIE
Number of references:11
Main heading:Spectroscopy
Controlled terms:Structural design - Functions - Data handling - Prisms - 3D modeling
Uncontrolled terms:Measurement precision - Point source microscopes - Precision assemblies - Precision detections - Precision measurement - Processing technologies - Spherical coordinates - Theoretical modeling
Classification code:408.1  Structural Design, General - 723.2  Data Processing and Image Processing - 741.3  Optical Devices and Systems - 921  Mathematics
DOI:10.1117/12.2584980
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 157>
 
Accession number:20220211450723
Title:Analysis of the internal stray radiation in infrared imaging system based on ambient temperature
Authors:Shen, Lamei (1, 2); Li, Zhiguo (1, 2); Liu, Kai (1, 2) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Li, Zhiguo(lzg@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12061
Part number:1 of 1
Issue title:AOPC 2021: Infrared Device and Infrared Technology
Issue date:2021
Publication year:2021
Article number:120611D
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510649972
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Infrared Device and Infrared Technology, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175862
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">When the infrared imaging system measuring the radiation characteristics of the target, the internal stray radiation is an important factor affecting the measurement results, and the environmental temperature will directly lead to the change of the internal stray radiation. This paper analyzes the phenomenon of the gray drift of the system output caused by the environmental temperature change, and derives the functional relationship between the drift amount and the ambient temperature. A simulation analysis model of internal stray radiation was established to verify the theoretical analysis.<br/></div> Copyright &copy; 2021 SPIE.
Number of references:10
Main heading:Temperature
Controlled terms:Imaging systems - Stray light - Thermography (imaging)
Uncontrolled terms:Environmental temperature - Gray drift - Infrared imaging systems - Internal stray radiation - Paper analysis - Radiation characteristics - Radiometric calibrations - Simulation analysis - Stray radiation - System output
Classification code:641.1  Thermodynamics - 741.1  Light/Optics - 742.1  Photography - 746  Imaging Techniques
DOI:10.1117/12.2606696
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 158>
 
Accession number:20211210117108
Title:Design of &Phi;450 mm light-weighted SiC mirror subsystem in space-based astronomy telescope
Title of translation:&Phi;450 mm&#21475;&#24452;&#31354;&#38388;&#22825;&#25991;&#30456;&#26426;&#36731;&#37327;&#21270;&#30899;&#21270;&#30789;&#20027;&#21453;&#23556;&#38236;&#32452;&#20214;&#35774;&#35745;
Authors:Feng, Liangjie (1); Cheng, Pengfei (1); Wang, Wei (1) 
Author affiliation:(1) The Space Optical Technology Research Department, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China 
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue:2
Issue date:February 25, 2021
Publication year:2021
Article number:20200175
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:A &Phi;450 mm primary mirror subsystem of a space-based astronomy telescope was designed with mass, optical surface distortion and reflectivity requirement. The open-back primary mirror was made of pressure-less sintering silicon carbide, light-weighted at a ratio of approximately 70%. Three side supporting invar flexure bipods were designed to minimize the assembling stress and the thermal stress. The high reflection was obtained from the optical surface cementite. The mirror weighted 7 kg and the reflectivity was 98% after optical polishing. The mirror subsystem was precisely assembled under the strict technical condition. The optical test with interferometer show that the optical surface distortion is less than 0.02&lambda; RMS, which meet the critical optical requirements for the primary mirror of the space-based astronomy telescope.<br/> Copyright &copy;2021 Infrared and Laser Engineering. All rights reserved.
Number of references:14
Main heading:Mirrors
Controlled terms:Sintering - Reflection - Silicon carbide - Telescopes
Uncontrolled terms:Optical polishing - Optical surfaces - Pressure-less sintering - Primary mirrors - SiC mirrors - Space-based - Technical conditions
Classification code:741.3  Optical Devices and Systems - 804.2  Inorganic Compounds
Numerical data indexing:Mass 7.00e+00kg, Percentage 7.00e+01%, Percentage 9.80e+01%
DOI:10.3788/IRLA20200175
Funding text:Space Variable Objects Monitor
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 159>
 
Accession number:20204609496783
Title:A compact bionic compound eye camera for imaging in a large field of view
Authors:Wang, Yuanyuan (1); Shi, Chengyong (3); Xu, Huangrong (2); Zhang, Yuanjie (2); Yu, Weixing (2) 
Author affiliation:(1) School of Science, Northwest A&F University, Yangling; Shaanxi; 712100, China; (2) Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, No. 17, Xinxi Road, Xian; 710119, China; (3) State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics & Physics, Chinese Academy of Sciences, No. 3888, Dongnanhu Road, Changchun; Jinlin, China 
Corresponding author:Yu, Weixing(yuwx@opt.ac.cn)
Source title:Optics and Laser Technology
Abbreviated source title:Opt Laser Technol
Volume:135
Issue date:March 2021
Publication year:2021
Article number:106705
Language:English
ISSN:00303992
CODEN:OLTCAS
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:The traditional imaging technologies, such as two-dimensional imaging, have not been able to meet people's needs for higher technology. Inspired by the characteristics, such as small size, sensitivity to moving targets and large field of view, researchers began to study bionic compound eyes. In this paper, a hemispherical mounting surface with through holes to set the compound lens array is fabricated by 3-D printing technology. More than one hundred small lenses are mounted on the 3-D printed hemispherical surface to form a bionic curved compound eye, which is then integrated with an optical relay system and an CMOS imaging sensor to form a rather compact bionic compound eye camera. The addition of the optical relay system solves the problem that the mismatch between the curved focal plane formed by the curved compound eye and the flat focal plane of the CMOS imaging sensor. By employing this method, we design and analyze the curved lens array and optical relay system, and perform the related optical performance tests on the fabricated bionic curved compound eye imaging system. The results show that a good image quality can be achieved. The formed bionic compound eye imaging prototype system rather compact and has a weight of only 121 g, a volume of 34 mm &times; 44 mm &times; 80 mm, and a field of view of 120&deg; &times; 120&deg;. This system has great potential and value in military, medical, and engineering applications.<br/> &copy; 2020 Elsevier Ltd
Number of references:25
Main heading:Lenses
Controlled terms:Cameras - CMOS integrated circuits - Military applications - Bionics - Focusing - Imaging systems
Uncontrolled terms:Bionic compound eye - CMOS imaging sensor - Curved lens arrays - Engineering applications - Hemispherical surfaces - Large field of views - Optical performance - Two-dimensional imaging
Classification code:404.1  Military Engineering - 461.1  Biomedical Engineering - 714.2  Semiconductor Devices and Integrated Circuits - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment - 746  Imaging Techniques
Numerical data indexing:Mass 1.21e-01kg, Size 8.00e-02m
DOI:10.1016/j.optlastec.2020.106705
Funding details:  Number: 2019JM-302, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 61975231, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:This research was funded by National Science Foundation of China (NSFC) (61975231) and Natural Science Foundation of Shaanxi Province (2019JM-302).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 160>
 
Accession number:20220211446980
Title:Research on nutation coupling method for space laser communication
Authors:Zhao, Yue (1, 2); Han, Junfeng (2); Meng, Xiangsheng (2); Chang, Zhiyuan (2); Xie, Xiaoping (2) 
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Han, Junfeng(hanjf@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12060
Part number:1 of 1
Issue title:AOPC 2021: Advanced Laser Technology and Applications
Issue date:2021
Publication year:2021
Article number:120601G
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510649958
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Advanced Laser Technology and Applications, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175856
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">With the rapid development of the times, traditional communication methods such as microwave communication have been difficult to meet the needs of high-speed and high-capacity communication. People begin to look for new communication technologies to replace the existing communication methods. Laser communication has the advantages of high bandwidth, small terminal volume and good security. In the process of space laser communication, the coupling of space light to single-mode fiber is one of the difficulties. In the process of practical application, external jitter (atmospheric turbulence, platform vibration, etc.) makes the focus spot offset from the end face of the optical fiber, greatly reduces the energy coupled into the single-mode optical fiber, and seriously affects the communication quality. Applying the mature optical fiber communication technology to space laser communication can not only improve the transmission rate of the link, but also improve the communication quality and simplify the system composition. Based on laser nutation, aiming at the problem of space optical coupling into single-mode fiber in space laser communication, this paper analyzes the influence of alignment error on coupling efficiency. The lateral deviation has the greatest influence. In this paper, a laser nutation coupling system model based on the fast mirror is built. The model is based on the principle of mode field matching. The nutation signal of the nutation fast mirror is used as the modulation signal, and the optical power output by the photodetector is used as the feedback for calculation. The fast mirror is controlled in real time to compensate the transverse deviation. The algorithm flow of laser nutation is described, the simulation model is built, and the feasibility of the algorithm is verified. Based on different algorithm parameters such as nutation radius and convergence step, the relationship between parameter value and algorithm performance is obtained.<br/></div> &copy; 2021 SPIE.
Number of references:8
Main heading:Single mode fibers
Controlled terms:Optical fiber communication - Laser mirrors - Atmospheric turbulence - Optical fiber coupling
Uncontrolled terms:Communication method - Communication quality - Coupling methods - Fast-steering mirrors - High-capacity communications - High-speed capacity - Laser nutation - Microwave communications - Single-mode fibers - Space laser communication
Classification code:443.1  Atmospheric Properties - 631.1  Fluid Flow, General - 717.1  Optical Communication Systems - 741.1.2  Fiber Optics - 741.3  Optical Devices and Systems - 744.7  Laser Components
DOI:10.1117/12.2606800
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 161>
 
Accession number:20220211446432
Title:Modulated optical signal detection based on cross-correlation algorithm
Authors:Zeng, Ke (1, 2); Han, Junfeng (2); Wang, Haitao (2); Wang, Chen (2); Xie, Xiaoping (2) 
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Han, Junfeng(hanjf@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12060
Part number:1 of 1
Issue title:AOPC 2021: Advanced Laser Technology and Applications
Issue date:2021
Publication year:2021
Article number:1206011
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510649958
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Advanced Laser Technology and Applications, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175856
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">With the development of the information age, the transmission rate and transmission capacity of information continue to increase. As a wireless communication method to achieve high bit rate communication, space laser communication plays an increasingly obvious role in global communications. In the current space laser communication system, the optical communication terminal uses a detector to detect the position of the received optical signal, and then the servo mechanism on it performs facula tracking. However, when a four-quadrant detector (4QD) is used to detect optical signal, the received optical signal generally contains three main types of noise, which are background radiation noise, shot noise and thermal noise. These three kinds of noise can be equivalent to Gaussian white noise. In this paper, a single-frequency cosine signal is used to modulate the intensity of the optical signal received by the 4QD, and then the modulated optical signal is detected by a spectrum analysis method based on the cross-correlation algorithm. This method reduces the relative error of the spectral line amplitude when the SNR is -5dB from 2.23% to 0.88%, and reduces the relative error of the spectral line amplitude when the SNR is -20dB from 17.6% to 5.49%. Therefore, this method can well suppress Gaussian white noise and improve the detection accuracy of modulated optical signal under extremely low SNR conditions.<br/></div> &copy; 2021 SPIE.
Number of references:9
Main heading:Shot noise
Controlled terms:Spectroscopy - Correlation detectors - Signal detection - Optical correlation - Gaussian noise (electronic) - Optical signal processing - Signal to noise ratio - Spectrum analysis - White noise - Optical communication  - Thermal noise
Uncontrolled terms:Cross-correlation algorithm - Extremely low SNR - Gaussian white noise - Low SNR - Modulated optical signal - Optical signal detection - Optical signals - Relative errors - Space laser communication - Spectral line
Classification code:716.1  Information Theory and Signal Processing - 717.1  Optical Communication Systems - 741.1  Light/Optics
Numerical data indexing:Decibel -2.00E+01dB, Decibel -5.00E+00dB, Percentage 1.76E+01% to 5.49E+00%, Percentage 2.23E+00% to 8.80E-01%
DOI:10.1117/12.2606529
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 162>
 
Accession number:20220211437960
Title:Laser collimation beam expansion design based on the Galileo structure
Authors:He, Xuan (1, 2); Bai, Jianming (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12065
Part number:1 of 1
Issue title:AOPC 2021: Optical Sensing and Imaging Technology
Issue date:2021
Publication year:2021
Article number:1206532
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650053
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Optical Sensing and Imaging Technology, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175876
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Starting from the collimated beam to be solved by the lighting system, based on the Gaussian optical theory, the transformation of Gaussian beam through the lens is deduced, the principle of large magnification collimating and expanding beam system is analyzed, and the design of collimating and expanding beam system changing the laser beam diameter and divergence angle is realized. It is verified by simulation, which meets the requirements of the lighting system for parallel light incidence.<br/></div> &copy; 2021 SPIE.
Number of references:6
Main heading:Gaussian beams
Controlled terms:Laser beams - Laser theory - Expansion - Lenses
Uncontrolled terms:Array lighting - Beam expansion - Beam system - Collimate beam expansion - Collimated beams - GALILEO - Gaussians - Laser collimation - Lighting systems - Optical theory
Classification code:711  Electromagnetic Waves - 741.3  Optical Devices and Systems - 744.1  Lasers, General - 744.8  Laser Beam Interactions - 951  Materials Science
DOI:10.1117/12.2606813
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 163>
 
Accession number:20214911290233
Title:Cross-Domain Scene Classification by Integrating Multiple Incomplete Sources
Authors:Gong, Tengfei (1); Zheng, Xiangtao (1); Lu, Xiaoqiang (1) 
Author affiliation:(1) Key Laboratory of Spectral Imaging Technology Cas, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Zheng, Xiangtao(xiangtaoz@gmail.com)
Source title:IEEE Transactions on Geoscience and Remote Sensing
Abbreviated source title:IEEE Trans Geosci Remote Sens
Volume:59
Issue:12
Issue date:December 1, 2021
Publication year:2021
Pages:10035-10046
Language:English
ISSN:01962892
E-ISSN:15580644
CODEN:IGRSD2
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">Cross-domain scene classification identifies scene categories by learning knowledge from a labeled data set (source domain) to an unlabeled data set (target domain), where the source data and the target data are sampled from different distributions. A lot of domain adaptation methods are used to reduce the distribution shift across domains, and most existing methods assume that the source domain shares the same categories with the target domain. It is usually hard to find a source domain that covers all categories in the target domain. Some works exploit multiple incomplete source domains to cover the target domain. However, in such setting, the categories of each source domain are a subset of the target-domain categories, and the target domain contains 'unknown' categories for each source domain. The existence of unknown categories results in the conventional domain adaptation unsuitable. Known and unknown categories should be treated separately. Therefore, a separation mechanism is proposed to separate the known and unknown categories in this article. First, multiple-source classifiers trained on the multiple source domains are used to coarsely separate the known/unknown categories in the target domain. The target images with high similarities to source images are selected as known categories, and the target images with low similarities are selected as unknown categories. Then, a binary classifier trained using the selected images is used to finely separate all target-domain images. Finally, only the known categories are implemented in the cross-domain alignment and classification. The target images get labels by integrating the hypotheses of multiple-source classifiers on the known categories. Experiments are conducted on three cross-domain data sets to demonstrate the effectiveness of the proposed method.<br/></div> &copy; 1980-2012 IEEE.
Number of references:43
Main heading:Classification (of information)
Controlled terms:Separation
Uncontrolled terms:Cross-domain - Cross-domain scene classification - Data set - Domain adaptation - Incomplete source - Multi-Sources - Multisource domain adaptation - Scene classification - Target domain - Unknown category
Classification code:716.1  Information Theory and Signal Processing - 802.3  Chemical Operations - 903.1  Information Sources and Analysis
DOI:10.1109/TGRS.2020.3034344
Funding details:  Number: 2020KJXX-091,2020TD-015, Acronym: -, Sponsor: -;Number: QYZDYSSW-JSC044, Acronym: -, Sponsor: -;Number: 61702498,61772510,61806193, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: QYZDB-SSW-JSC015,XAB2017B26, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 61925112, Acronym: -, Sponsor: National Science Fund for Distinguished Young Scholars;Number: 2019JQ-340, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:This work was supported in part by the National Science Found for Distinguished Young Scholars under Grant 61925112; in part by the National Natural Science Foundation of China under Grant 61806193, Grant 61702498, and Grant 61772510; in part by the Young Top-Notch Talent Program of Chinese Academy of Sciences under Grant QYZDB-SSW-JSC015; in part by the CAS "Light of West China" Program under Grant XAB2017B26; in part by the Innovation Capability Support Program of Shaanxi under Grant 2020KJXX-091 and Grant 2020TD-015; in part by the Natural Science Basic Research Program of Shaanxi under Grant 2019JQ-340; in part by the Key Research Program of Frontier Sciences, Chinese Academy of Sciences, under Grant QYZDYSSW-JSC044; and in part by the National High Resolution Earth Observation Foundation for Young Scientists of China.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 164>
 
Accession number:20220911715508
Title:Sequential three-branch decision method based on Bayesian principle
Authors:Zeng, Ke (1, 2); Ran, Junfeng (2) 
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Source title:Proceedings of the 33rd Chinese Control and Decision Conference, CCDC 2021
Abbreviated source title:Proc. Chin. Control Decis. Conf., CCDC
Part number:1 of 1
Issue title:Proceedings of the 33rd Chinese Control and Decision Conference, CCDC 2021
Issue date:2021
Publication year:2021
Pages:3902-3907
Language:English
ISBN-13:9781665440899
Document type:Conference article (CA)
Conference name:33rd Chinese Control and Decision Conference, CCDC 2021
Conference date:May 22, 2021  -  May 24, 2021
Conference location:Kunming, China
Conference code:174987
Sponsor:Chinese Association of Automation, State Key Laboratory of Synthetical Automation for Process Industries; IEEE Control Systems Society (CSS); IEEE Technical Committee on Control Theory; Northeastern University
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">In this paper, the sequential three-branch decision method based on Bayesian principle is applied to face image recognition to realize the minimum risk decision. Adding a pending area to the traditional two-branch decision can minimize the decision cost when the misclassification cost is imbalanced and the feature information of the sample is temporarily insufficient. In addition, the acquisition of sample feature information is not unlimited. Although each feature information obtained can reduce the cost of misclassification of decision, it is also necessary to consider the increased test cost of each feature information obtained. This paper used the Bayesian principle to realize the dynamic balance of them to achieve the minimum total decision cost (misclassification cost and test cost). In this paper, 2DPCA was used to obtain the granular features of face images, and experiments were conducted on face databases such as AR and PIE to verify the effectiveness of the sequential three-branch decision method based on Bayesian principle.<br/></div> &copy; 2021 IEEE.
Number of references:12
Main heading:Statistical tests
Controlled terms:Face recognition
Uncontrolled terms:Bayesian principle - Decision cost - Decision method - Face image recognition - Feature information - Low total cost - Misclassification costs - Test cost - Three-branch - Three-branch decision method
Classification code:922.2  Mathematical Statistics
DOI:10.1109/CCDC52312.2021.9601833
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 165>
 
Accession number:20210409805908
Title:Bidirectional Interaction Network for Person Re-Identification
Authors:Chen, Xiumei (1); Zheng, Xiangtao (1); Lu, Xiaoqiang (1) 
Author affiliation:(1) CAS Key Laboratory of Spectral Imaging Technology, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Zheng, Xiangtao(xiangtaoz@gmail.com)
Source title:IEEE Transactions on Image Processing
Abbreviated source title:IEEE Trans Image Process
Volume:30
Issue date:2021
Publication year:2021
Pages:1935-1948
Article number:9321734
Language:English
ISSN:10577149
E-ISSN:19410042
CODEN:IIPRE4
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:Person re-identification (ReID) task aims to retrieve the same person across multiple spatially disjoint camera views. Due to huge image changes caused by various factors such as posture variation and illumination transformation, images of different persons may share the more similar appearances than images of the same one. Learning discriminative representations to distinguish details of different persons is significant for person ReID. Many existing methods learn discriminative representations resorting to a human body part location branch which requires cumbersome expert human annotations or complex network designs. In this article, a novel bidirectional interaction network is proposed to explore discriminative representations for person ReID without any human body part detection. The proposed method regards multiple convolutional features as responses to various body part properties and exploits the inter-layer interaction to mine discriminative representations for person identities. Firstly, an inter-layer bilinear pooling strategy is proposed to feasibly exploit the pairwise feature relations between two convolution layers. Secondly, to explore interaction of multiple layers, an effective bidirectional integration strategy consisting of two different multi-layer interaction processes is designed to aggregate bilinear pooling interaction of multiple convolution layers. The interaction of multiple layers is implemented in a layer-by-layer nesting policy to ensure the two interaction processes are different and complementary. Extensive experiments validate the superiority of the proposed method on four popular person ReID datasets including Market-1501, DukeMTMC-ReID, CUHK03-NP and MSMT17. Specifically, the proposed method achieves a rank-1 accuracy of 95.1% and 88.2% on Market-1501 and DukeMTMC-ReID, respectively.<br/> &copy; 1992-2012 IEEE.
Number of references:47
Main heading:Complex networks
Controlled terms:Commerce - Neural networks - Convolution
Uncontrolled terms:Bi-directional interaction - Human annotations - Integration strategy - Interaction process - Interlayer interactions - Multiple convolution - Multiple layers - Person re identifications
Classification code:716.1  Information Theory and Signal Processing - 722  Computer Systems and Equipment
Numerical data indexing:Percentage 8.82e+01%, Percentage 9.51e+01%
DOI:10.1109/TIP.2021.3049943
Funding details:  Number: 2020KJXX-091,2020TD-015, Acronym: -, Sponsor: -;Number: 61772510,61806193, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 61925112, Acronym: -, Sponsor: National Science Fund for Distinguished Young Scholars;Number: 2019JC-23,2019JQ-340, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:Manuscript received June 30, 2020; revised October 22, 2020 and December 30, 2020; accepted January 4, 2021. Date of publication January 13, 2021; date of current version January 20, 2021. This work was supported in part by the Innovation Capability Support Program of Shaanxi under Grant 2020KJXX-091 and Grant 2020TD-015, in part by the National Science Fund for Distinguished Young Scholars under Grant 61925112, in part by the National Natural Science Foundation of China under Grant 61806193 and Grant 61772510, and in part by the Natural Science Basic Research Program of Shaanxi under Grant 2019JQ-340 and Grant 2019JC-23. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Liang Wang. (Corresponding author: Xiangtao Zheng.) Xiumei Chen is with the CAS Key Laboratory of Spectral Imaging Technology, Xi&rsquo;an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi&rsquo;an 710119, China, and also with the University of Chinese Academy of Sciences, Beijing 100049, China.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 166>
 
Accession number:20210509874593
Title:The design and fabrication of freeform lenses for generating complex illumination patterns on curved surfaces
Authors:Zhang, YuPeng (1, 2); Mao, Xianglong (1); Xie, Yongjun (1); Li, Jinpeng (1); Wang, Fengbiao (1); Gao, Rong (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, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:1176120
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:Freeform optics have been found in a variety of beam shaping designs. However, they are typically used to form prescribed illumination patterns on a planar surface. In this paper, we will demonstrate a ray mapping based method to design smooth freeform lenses to form complicated illumination distributions on curved surfaces. The ray mapping between the source and target is established by solving an optimal mass transportation problem which is governed by the Monge-Amp&eacute;re partial differential equation. Then, the freeform lens is constructed by a geometric method based on the optimal ray mapping. Finally, the performance of the lens is verified by Monte Carlo ray tracing simulation in Zemax OpticStudio software. To show the effectiveness of the proposed method, several freeform lenses are designed as examples for a collimated light source to generate different illumination patterns on different curved surfaces. A freeform lens is also fabricated and experimented.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:12
Main heading:Mapping
Controlled terms:Mass transportation - Monte Carlo methods - Computer software - Design - Light sources
Uncontrolled terms:Collimated light - Curved surfaces - Freeform optics - Geometric method - Illumination distribution - Illumination patterns - Monte-Carlo ray tracing - Transportation problem
Classification code:405.3  Surveying - 723  Computer Software, Data Handling and Applications - 922.2  Mathematical Statistics
DOI:10.1117/12.2586416
Funding details:  Number: 2017KW-028, Acronym: -, Sponsor: -;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:This work was supported by the CAS "Light of West China" Shaanxi Key R&D Program (2017KW-028).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 167>
 
Accession number:20213910934443
Title:Soliton Burst and Bi-Directional Switching in the Platform with Positive Thermal-Refractive Coefficient Using an Auxiliary Laser
Authors:Zhao, Yanjing (1, 2); Chen, Liao (1); Zhang, Chi (1); Wang, Weiqiang (3, 4); Hu, Hao (1); Wang, Ruolan (1); Wang, Xinyu (3, 4); Chu, Sai T. (5); Little, Brent (3); Zhang, Wenfu (3, 4); Zhang, Xinliang (1) 
Author affiliation:(1) Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan; 430074, China; (2) DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, &Oslash;rsteds Plads 343, Lyngby; DK-2800, Denmark; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an; 710119, China; (4) University of Chinese Academy of Sciences, Beijing; 100049, China; (5) Department of Physicsand Materials Science, City University of Hong Kong, 999077, Hong Kong 
Corresponding authors:Zhang, Xinliang(xlzhang@mail.hust.edu.cn); Zhang, Wenfu(wfuzhang@opt.ac.cn)
Source title:Laser and Photonics Reviews
Abbreviated source title:Laser Photon. Rev.
Volume:15
Issue:11
Issue date:November 2021
Publication year:2021
Article number:2100264
Language:English
ISSN:18638880
E-ISSN:18638899
Document type:Journal article (JA)
Publisher:John Wiley and Sons Inc
Abstract:<div data-language="eng" data-ev-field="abstract">Dissipative Kerr solitons in optical microresonators enable the generation of stable ultrashort pulses and phase-locked frequency combs, leading to their widespread applications. For traditional platforms with positive thermal-refractive coefficient, strong thermal effect increases the difficulties of soliton triggering and prohibits the deterministic control of soliton number. Here, using an auxiliary laser to tune thermal effect, soliton burst and bi-directional switching are demonstrated in high-index doped silica glass platform. First, by varying the parameters of the auxiliary laser, the thermal effect tuning of the microresonator is studied with different thermal compensation states achieved, leading to distinct soliton switching features. Especially, the solitons burst and bi-directional switch in over-compensated state. The corresponding process is recorded in real time based on a temporal magnification system, uncovering transient dynamics from continuum background noise to soliton formation. Finally, the deterministic generation of solitons is enabled with controllable soliton number spanning from 1 to 21. The present work provides insight into soliton dynamics and enables soliton generation on demand with a large range of soliton numbers inside a single&nbsp;device.<br/></div> &copy; 2021 Wiley-VCH GmbH
Number of references:45
Main heading:Solitons
Controlled terms:Microresonators - Silica
Uncontrolled terms:Bi-directional - Deterministics - Directional switching - Frequency combs - Higher index - Kerr solitons - Optical microresonators - Phase-locked frequency - Thermal - Ultrashort-pulse
Classification code:741.1  Light/Optics - 744.7  Laser Components
DOI:10.1002/lpor.202100264
Funding details:  Number: 61505060,61631166003,61675081,61735006,61927817,62005090, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: -, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: 2018M640692, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: 2019YFB2203102, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:Y.Z. and L.C. contributed equally to this work. The authors gratefully acknowledged Prof. Kerry Vahala for helpful discussions and valuable suggestions for our work. The authors thank Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS) for device fabrication. The authors thank Prof. Heng Zhou for heplful discussion of the thermal effect simulations. The work was supported by National Key Research and Development Project (Grant No. 2019YFB2203102), the National Science Foundation of China (NSFC) (Grant Nos. 61927817, 61735006, 61631166003, 61675081, 61505060, and 62005090), China Postdoctoral Science Foundation (Grant No. 2018M640692).Y.Z. and L.C. contributed equally to this work. The authors gratefully acknowledged Prof. Kerry Vahala for helpful discussions and valuable suggestions for our work. The authors thank Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS) for device fabrication. The authors thank Prof. Heng Zhou for heplful discussion of the thermal effect simulations. The work was supported by National Key Research and Development Project (Grant No. 2019YFB2203102), the National Science Foundation of China (NSFC) (Grant Nos. 61927817, 61735006, 61631166003, 61675081, 61505060, and 62005090), China Postdoctoral Science Foundation (Grant No. 2018M640692).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 168>
 
Accession number:20220211438130
Title:Three-dimensional reconstruction technique based on triangular phase shift and complementary gray code
Authors:Gao, Ruixue (1, 2); Zhang, Pengchang (1); Wang, Pengchong (1); Ling, Xi (1, 2) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Science, Beijing; 100049, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12065
Part number:1 of 1
Issue title:AOPC 2021: Optical Sensing and Imaging Technology
Issue date:2021
Publication year:2021
Article number:120652E
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650053
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Optical Sensing and Imaging Technology, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175876
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Structured light 3D reconstruction technology has the advantages of non-contact, low cost and high reliability, and is widely used in industrial parts defect detection, cultural relics 3D digitization and other fields. As the core part of structured light, coding method is the key element to obtain 3D scene information, which directly affects the accuracy of 3D reconstruction. The combination of gray coding and phase shifting is a typical method for 3D shape measurement. However, due to the complexity of sinusoidal fringe calculation, and the fringe pattern boundary cannot be strictly aligned, there is a step change problem, which limits the application of this method in the field of real-time high-speed three-dimensional measurement. In this paper, the phase shift method of triangular wave and gray coding are combined to measure the 3D morphology. The triangular wave function only uses two raster images and the phase information can be obtained by simple intensity ratio calculation. The binary defocus technique can shorten the projection time, but it blurs the edge boundary of gray code and aggravates the step problem of reconstruction of object surface. In order to solve this problem, the complementary gray code whose fringe width is half of the sinusoidal fringe period is used to correct the period deviation. The experimental results show that the proposed method can reduce the number of fringe projection, simplify the calculation steps and shorten the time of data processing, so it is feasible.<br/></div> &copy; 2021 SPIE.
Number of references:10
Main heading:Wave functions
Controlled terms:Image reconstruction - Morphology - Costs - Data handling
Uncontrolled terms:3D reconstruction - Gray codes - Gray coding - Low-high - Non-contact - Reconstruction techniques - Shift-and - Structured Light - Three-dimensional reconstruction - Triangular wave
Classification code:723.2  Data Processing and Image Processing - 911  Cost and Value Engineering; Industrial Economics - 921  Mathematics - 931.2  Physical Properties of Gases, Liquids and Solids - 951  Materials Science
DOI:10.1117/12.2606547
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 169>
 
Accession number:20220211438051
Title:Automatic checkerboard corner detection combined with gray features and energy minimization (ADGE)
Authors:Wang, YuanZhang (1, 2); Gao, Xiaohui (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Science, Beijing; 100049, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12065
Part number:1 of 1
Issue title:AOPC 2021: Optical Sensing and Imaging Technology
Issue date:2021
Publication year:2021
Article number:1206507
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650053
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Optical Sensing and Imaging Technology, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175876
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">In the camera calibration process, the checkerboard pattern has a wide range of applications. Aiming at the current checkerboard corner detection algorithms that have missed and misdetected situations, this paper proposes an automatic checkerboard corner detection algorithm that combines gray-scale features and energy minimization(ADGE). The ADGE first uses the proposed two sets of gray-level symmetry operators to process the image separately to extract the candidate corner points, and then uses the regional block mode to dynamically search for the local maximum value of the candidate corner points. It further constructs a reaction function to linearly solve the sub-pixel coordinates, and finally extracts all checkerboard corner points and sorts them by minimizing the energy function. Experimental results show that the corner points extracted by the ADGE have no missed and false detection, and the corner reprojection accuracy is 0.1298 pixels. The ADGE can meet the requirements of camera calibration and provide it with high-precision data.<br/></div> &copy; 2021 SPIE.
Number of references:15
Main heading:Pixels
Controlled terms:Signal detection - Calibration - Cameras - Feature extraction - Edge detection
Uncontrolled terms:Camera calibration - Checkerboard corner - Corner detection - Corner point - Detection algorithm - Energy minimization - Gray features - Gray-level - Gray-level symmetry operator - Non-maximum suppression
Classification code:716.1  Information Theory and Signal Processing - 742.2  Photographic Equipment
DOI:10.1117/12.2601236
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 170>
 
Accession number:20220211444601
Title:Error compensation of laser tracker in multi-station measurement
Authors:Wang, Ruiyan (1, 2); She, Wenji (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Cas, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:She, Wenji(she_wj@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12069
Part number:1 of 1
Issue title:AOPC 2021: Novel Technologies and Instruments for Astronomical Multi-Band Observations
Issue date:2021
Publication year:2021
Article number:120690Y
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650138
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Novel Technologies and Instruments for Astronomical Multi-Band Observations, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175885
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">In order to improve the multi station measurement accuracy of laser tracker, aiming at the problem that the measurement error of laser tracker restricts the transfer accuracy, the compensation method of measurement error of single laser tracker in multi-station measurement is studied in this paper. The compensated coordinate measurement values are substituted into the coordinate transformation model, and the weighted total least square method is used to iteratively solve the transfer parameters. The results are verified by Matlab simulation experiments. The results show that the mean square errors of coordinate points before and after compensation are respectively 0.4358&mu;m and 0.2920&mu;m. The data show that the measurement accuracy of the laser tracker is improved by 30%.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:10
Main heading:Error compensation
Controlled terms:Mean square error - Least squares approximations - MATLAB - Measurement errors - Iterative methods
Uncontrolled terms:Compensation method - Coordinate calibration - Coordinate measurements - Coordinate transformations - Laser tracker - Measurement accuracy - Methods of measurement - Multi-station measurements - Single lasers - Transformation modeling
Classification code:723.5  Computer Applications - 921  Mathematics - 921.6  Numerical Methods - 922.2  Mathematical Statistics
Numerical data indexing:Percentage 3.00E+01%, Size 2.92E-07m, Size 4.358E-07m
DOI:10.1117/12.2606674
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 171>
 
Accession number:20214311046490
Title:Mass-property Identification System for Three-axis Air Bearing Table Based on Simulated annealing Algorithm and Fading Memory Filter
Authors:Wang, Zhenyu (1); Li, Zening (2); Xu, Xu (2); Li, Zhiguo (1); Ma, Guangcheng (2); Xia, Hongwei (2) 
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of Cas, Xi'An; 710119, China; (2) Harbin Institute of Technology, School of Astronautics, Harbin; 150001, China 
Source title:Chinese Control Conference, CCC
Abbreviated source title:Chinese Control Conf., CCC
Volume:2021-July
Part number:1 of 1
Issue title:Proceedings of the 40th Chinese Control Conference, CCC 2021
Issue date:July 26, 2021
Publication year:2021
Pages:1201-1206
Language:English
ISSN:19341768
E-ISSN:21612927
ISBN-13:9789881563804
Document type:Conference article (CA)
Conference name:40th Chinese Control Conference, CCC 2021
Conference date:July 26, 2021  -  July 28, 2021
Conference location:Shanghai, China
Conference code:172297
Sponsor:Chinese Association of Automation (CAA); Shanghai University; Systems Engineering Society of China; Technical Committee on Control Theory, Chinese Association of Automation (TCCT)
Publisher:IEEE Computer Society
Abstract:<div data-language="eng" data-ev-field="abstract">The mass property of the three-axis air bearing table is unknown when simulating the attitude and orbital motion of a satellite. This paper builds a mathematical model for the identification of the quality characteristics of the three-axis air bearing table. An identification method for the quality characteristics of a three-axis air bearing table based on the simulated annealing algorithm (SA) is proposed. To improve the identification accuracy, a method for identifying the quality characteristics of a three-axis air bearing table based on the fading memory filter (FM) is proposed. The mass-property identification system uses flywheels as the excitation source of the three-axis air bearing and uses the inertial measurement unit (IMU) to measure the angular velocity. The results show that the moment of inertia identification error of the SA algorithm is about 3.48%, and it is capable of getting away from local optimum. The moment of inertia identification error based on the FM filter is less than 2% with faster convergence speed and higher identification accuracy.<br/></div> &copy; 2021 Technical Committee on Control Theory, Chinese Association of Automation.
Number of references:11
Main heading:Simulated annealing
Controlled terms:Air - Bearings (machine parts) - Orbits
Uncontrolled terms:Air bearing tables - Annealing algorithm - Fading memory filter - Mass properties - Mass-property identification - Property identification - Quality characteristic - Simulated annealing algorithm - Three axes - Three-axis air bearing table
Classification code:537.1  Heat Treatment Processes - 601.2  Machine Components - 804  Chemical Products Generally
Numerical data indexing:Percentage 2.00E+00%, Percentage 3.48E+00%
DOI:10.23919/CCC52363.2021.9550654
Funding details:  Number: 61304108, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:*This work is supported by National Natural Science Foundation (NNSF) of China under Grant 61304108.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 172>
 
Accession number:20220811682269
Title:Novel Structure Design of Circle Support Component for a Primary Reflective Mirror with Large Diameter
Authors:Song, Yang (1); Ye, Jing (1, 2); Shen, Zhong (1); Ma, Tengfei (1); Hu, Yongming (1); Wang, Wei (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:Ye, Jing(yejing@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12070
Part number:1 of 1
Issue title:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Issue date:2021
Publication year:2021
Article number:120700H
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650152
Document type:Conference article (CA)
Conference name:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes 2021
Conference date:June 14, 2021  -  June 17, 2021
Conference location:Chengdu, China
Conference code:176905
Sponsor:Institute of Optics and Electronics (IOE), Chinese Academy of Sciences; The Chinese Optical Society (COS)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">With the rapid progress of technology and manufacture, the number of telescopes in space is mounting dramatically. Considering launch cost, more and more engineers nowadays pursue lightweight and compact design of telescope in space. Traditional design scheme usually has a support plate for primary reflective mirror. It will take some space for other parts. The paper, taking a primary reflective mirror with 600mm in diameter as an example, put forward a novel design of circle support component instead of traditional support plate. It utilized a special structural layout to save more space. The paper specified this design scheme and made comparison between these two design schemes. The paper also gave the assembling method of the primary reflective mirror and circle support component, which would verify its feasibility in engineering practice in a virtual way. The novel structure design in this paper will give some guidance to engineers and designers, who are devoting themselves to designing space telescopes.<br/></div> &copy; 2021 SPIE
Number of references:6
Main heading:Mirrors
Controlled terms:Plates (structural components)
Uncontrolled terms:Assembling method - Circle support component - Design scheme - Novel structures - Primary reflective mirror - Reflective mirrors - Special structural layout - Structural layout - Structure design - Support plates
Classification code:408.2  Structural Members and Shapes - 741.3  Optical Devices and Systems
Numerical data indexing:Size 6.00E-01m
DOI:10.1117/12.2604296
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 173>
 
Accession number:20220811682283
Title:Large-range piston error detection technology based on dispersed fringe sensor
Authors:Wang, Pengfei (1, 2); Zhao, Hui (1); Xie, Xiaopeng (1); Zhang, Yating (1, 2); Li, Chuang (1); Fan, Xuewu (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:Zhao, Hui(zhaohui@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12070
Part number:1 of 1
Issue title:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Issue date:2021
Publication year:2021
Article number:1207009
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650152
Document type:Conference article (CA)
Conference name:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes 2021
Conference date:June 14, 2021  -  June 17, 2021
Conference location:Chengdu, China
Conference code:176905
Sponsor:Institute of Optics and Electronics (IOE), Chinese Academy of Sciences; The Chinese Optical Society (COS)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Synthetic aperture is the mainstream structure of current astronomical telescopes. However, after the synthetic aperture telescope is deployed in orbit, there will remain tilt and piston error between adjacent segments, which will sharply deteriorate the imaging quality of the optical system. The traditional piston error detection method based on dispersed fringe sensor has the question that it is difficult to detect the piston error within one wavelength, and the detection accuracy is restricted by the detection range. The method in this paper constructs multiple monochromatic light channels by opening windows in different areas on the dispersed fringe pattern, calculating and obtaining the feature value in each window to form a feature vector. Then, the convolutional neural network is introduced to distinguish the feature vector to detect piston error. Among them, the training set construction method adopted in this paper only needs raw data in one wavelength to construct a training set covering the entire detection range. Through simulation, the method proposed in this paper achieves the detection range of [-208&lambda;, 208&lambda;] (&lambda;=720nm), and regardless of the presence of noise, the root mean square value of the detection error does not exceed 17.7nm (0.027&lambda;<inf>min</inf>, &lambda;<inf>min</inf>=660nm).<br/></div> &copy; 2021 SPIE
Number of references:11
Main heading:Synthetic apertures
Controlled terms:Optical systems - Error detection - Convolutional neural networks - Pistons
Uncontrolled terms:'current - Astronomical observation - Co-phasing - Detection range - Detection technology - Dispersed fringe sensor - Features vector - Piston errors - Technology-based - Training sets
Classification code:612.1.1  Internal Combustion Engine Components - 716.2  Radar Systems and Equipment - 741.3  Optical Devices and Systems
Numerical data indexing:Size 1.77E-08m, Size 6.60E-07m, Size 7.20E-07m
DOI:10.1117/12.2604553
Funding details:  Number: GFZX04014307, Acronym: -, Sponsor: Higher Education Discipline Innovation Project;
Funding text:Major Project of High-resolution Earth Observation System of China (No. GFZX04014307).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 174>
 
Accession number:20214711193946
Title:Calibration Method for Structural Parameters and Assembly Error of Light Field Camera
Title of translation:&#20809;&#22330;&#30456;&#26426;&#32467;&#26500;&#21442;&#25968;&#21450;&#35013;&#37197;&#35823;&#24046;&#26631;&#23450;&#26041;&#27861;
Authors:Yuan, Suochao (1, 2); Li, Ming (1, 2); Da, Zhengshang (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 authors:Li, Ming(liming1@opt.ac.cn); Li, Ming(liming1@opt.ac.cn); Da, Zhengshang(dazhengshang@opt.ac.cn)
Source title:Zhongguo Jiguang/Chinese Journal of Lasers
Abbreviated source title:Zhongguo Jiguang
Volume:48
Issue:20
Issue date:October 25, 2021
Publication year:2021
Article number:2004001
Language:Chinese
ISSN:02587025
CODEN:ZHJIDO
Document type:Journal article (JA)
Publisher:Science Press
Abstract:<div data-language="eng" data-ev-field="abstract">Objective: A light field camera that is capable of capturing four-dimensional light field information through a single shot can be realized by inserting a microlens array in front of the sensor of a traditional camera. It has great potential to play important roles in many applications such as 3D measurement, flow field velocimetry, and wavefront sensing. To obtain the image information, the captured light-field information shall be decoded. The decoding process is largely based on the structural parameters of the light field camera, including the distance between the microlens array and sensor and the pitch of the microlens array. Because of the errors introduced during the manufacturing and assembling processes, using the nominal values of these parameters are not recommended; calibration of the true values and assembly errors are desired. Several studies have been conducted on the calibration of light field cameras. However, most of these studies follow the framework of the calibration method used for traditional cameras, where a complicated imaging model is built and the unknown parameters are searched using an optimization algorithm. The complexity of procedures in such methods makes them difficult to implement. Based on optical test principles, a new calibration method using simpler calibration models is proposed, which enables fast calibration. Methods: The proposed calibration method comprises two parts: calibration with the main lens and calibration without the main lens. The calibrations of structural parameters are accomplished when the main lens is mounted, and the calibration model is based on the relation that the exit pupil of the main lens is imaged by the microlens. A uniform light source is used to illuminate the pupil of the main lens to obtain calibration images. The distance between the microlens array and sensor and the pitch of the microlens array are treated as two optimized variables of an optimization model and are calculated by searching the optimal values. The calibration of assembly errors is accomplished when the main lens is removed, and the calibration model is based on the imaging feature of the microlens for object points at infinity. A collimated beam is used to illuminate the microlens array to obtain calibration images. Rotation and tilt errors are obtained by analyzing the geometry of the spot array in calibration images. Results and Discussions A self-constructed light field camera is calibrated using the proposed method. The distance between the microlens array and sensor, for which the nominal value is 2.1300 mm, is calibrated to be 2.2738 mm. The pitch of the microlens array, for which the nominal value is 0.3000 mm, is calibrated to be 0.3001 mm. Furthermore, the distance between the microlens array and exit pupil of the main lens is calculated to be 47.7058 mm (Table 1). The rotation error between the microlens array and sensor is calibrated to be 0.1785&deg;, which shall be corrected according to formula (2), and the pitch of microlens array is calculated to be 0.3001 mm by extracting the distance between adjacent spot centroids on the calibration image. The tilt error between the microlens array and sensor is 0.0083&deg; and 0.0047&deg; along the row and column directions of the sensor, respectively, and the distance between the microlens array and sensor is calculated to be 2.2719 mm based on equation (11). The relative deviation of the calibration values of the distance between the microlens array and sensor obtained from the two different methods is 0.84%. Based on the calibration data, reconstruction of the light field is executed and the rotation error is corrected. Compared with the reconstructed images before calibration, the quality of reconstructed images after calibration improved (Fig.10). Conclusions: To solve the problem of calibration of structural parameters and assembly errors of light field cameras, a calibration method based on optical test principles is proposed. A uniform light source is used to illuminate the optical pupil of the main lens, and the array of images of the optical pupil on the sensor is used for calculating the structural parameters, including the pitch of the microlens array and the distance between the microlens array and sensor. The assembly errors can be calibrated with the main lens removed and the microlens array illuminated directly by a collimated light beam. The calibration images captured for assembly error calibration can also be used for estimating the structural parameters through simple geometric analysis, which can serve as comparisons for the calibration results obtained from the method with the main lens mounted. Experiment results show that the calibrated and nominal values of structural parameters agree well with each other, indicating that the proposed calibration method is feasible.<br/></div> &copy; 2021, Chinese Lasers Press. All right reserved.
Number of references:20
Main heading:Cameras
Controlled terms:Wavefronts - Microlenses - Decoding - Light sources - Optimization - Optical instrument lenses - Errors - Parameter estimation
Uncontrolled terms:Assembly error - Calibration method - Calibration model - Computational imaging - Light field camera - Light fields - Micro-lens arrays - Nominal values - Structural parameter - Structure parameter
Classification code:723.2  Data Processing and Image Processing - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment - 921.5  Optimization Techniques
Numerical data indexing:Percentage 8.40E-01%, Size 2.13E-03m, Size 2.2719E-03m, Size 2.2738E-03m, Size 3.001E-04m, Size 3.00E-04m, Size 4.77058E-02m
DOI:10.3788/CJL202148.2004001
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 175>
 
Accession number:20221311844088
Title:Using Landsat-8 imagery and Generative Adversarial Network for Glacial Lakes Mapping in High Mountain Regions
Authors:Zhao, Hang (1, 2); Liu, Xuebin (1, 2); Wang, Shuang (1, 2) 
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:Wang, Shuang(wangshuang@opt.ac.cn)
Source title:Proceedings of 2021 IEEE 2nd International Conference on Information Technology, Big Data and Artificial Intelligence, ICIBA 2021
Abbreviated source title:Proc. IEEE Int. Conf. Inf. Technol., Big Data Artif. Intell., ICIBA
Part number:1 of 1
Issue title:Proceedings of 2021 IEEE 2nd International Conference on Information Technology, Big Data and Artificial Intelligence, ICIBA 2021
Issue date:2021
Publication year:2021
Pages:877-881
Language:English
ISBN-13:9781665428767
Document type:Conference article (CA)
Conference name:2nd IEEE International Conference on Information Technology, Big Data and Artificial Intelligence, ICIBA 2021
Conference date:December 17, 2021  -  December 19, 2021
Conference location:Chongqing, China
Conference code:176951
Sponsor:Chengdu Union Institute of Science and Technology; Chongqing Geeks Education Technology Co., Ltd; Chongqing Global Union Academy of Science and Technology; Chongqing University of Technology; Global Union Academy of Science and Technology; IEEE Beijing Section
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">As an essential resource in High Mountain Regions (HMR), evaluating the glacial lake dynamics is of great significance to explore the impacts of climate changes and predict the risks of Glacial Lake Outburst Floods (GLOFs). However, complicated and laborious methods for glacial lake mapping are unpractically applied in automatically monitoring glacial lakes at a large-scale region. In this work, we explored the mapping efficiency of glacial lakes by combing Generative Adversarial Networks and multi-level feature pyramid (GANMFP) in HMR. We first sampled the image patches containing glacial lakes from Landsat-8 raw data to evaluate the model performance. Totally, 6583 patches with 256x256x7 pixels are randomly cropped from 62 Landsat-8 images. Then we employed these data to train and test the GAN model, which integrated a multi-level feature fusion module in generator and a Resnet-152 networks in discriminator. From the validation results and result visualization, our method achieved good performances in Precision (88.42), Recall (59.61), and Overall Accuracy (99.28), which shows excellent potential in glacial lake mapping at a large-scale region.<br/></div> &copy; 2021 IEEE.
Number of references:14
Main heading:Landsat
Controlled terms:Glacial geology - Computer vision - Mapping - Generative adversarial networks - Climate change - Lakes - Landforms
Uncontrolled terms:Glacial lake outburst flood - Glacial lakes - High mountain region - High mountains - Lake dynamics - LANDSAT - Landsat-8 OLI - Large-scales - Mountain regions - Multilevels
Classification code:405.3  Surveying - 443.1  Atmospheric Properties - 481.1  Geology - 655.2  Satellites - 723.4  Artificial Intelligence - 723.5  Computer Applications - 741.2  Vision
DOI:10.1109/ICIBA52610.2021.9687901
Funding details:  Number: 2018YFB0504900, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:ACKNOWLEDGMENT This work was supported by the National Key R&D Program of China under Grant No.2018YFB0504900.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 176>
 
Accession number:20212810613327
Title:Unsupervised Feature Selection using Pseudo Label Approximation    (Open Access)
Authors:Deng, Ren (1); Liu, Ye (1); Luo, Liyan (1); Chen, DongJing (1); Li, Xijie (2) 
Author affiliation:(1) Amazingx Academy, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xian, China 
Source title:ACM International Conference Proceeding Series
Abbreviated source title:ACM Int. Conf. Proc. Ser.
Part number:1 of 1
Issue title:2021 13th International Conference on Machine Learning and Computing, ICMLC 2021
Issue date:February 26, 2021
Publication year:2021
Pages:498-502
Article number:3457758
Language:English
ISBN-13:9781450389310
Document type:Conference article (CA)
Conference name:2021 13th International Conference on Machine Learning and Computing, ICMLC 2021
Conference date:February 26, 2021  -  March 1, 2021
Conference location:Virtual, Online, China
Conference code:169701
Publisher:Association for Computing Machinery
Abstract:<div data-language="eng" data-ev-field="abstract">Feature selection is a machine learning technique that selects a representative subset of all features available in order to reduce the time and space needed to process high-dimensional data. Traditional feature selection methods include filter, wrapper, and embedded approaches. However, many conventional methods' performances are not suitable in many contexts. This paper proposes a new unsupervised feature selection model based on pseudo label approximation. The new derived model incorporates a projection error, a sparsity regularization, and a manifold regularization term that preserves the manifold structure of the original data. Finally, implementation of the new model onto five distinct datasets validates the effectiveness of the proposed model.<br/></div> &copy; 2021 ACM.
Number of references:14
Main heading:Feature Selection
Controlled terms:Clustering algorithms - Learning systems
Uncontrolled terms:Conventional methods - Feature selection methods - High dimensional data - Machine learning techniques - Manifold regularizations - Manifold structures - Sparsity regularizations - Unsupervised feature selection
Classification code:903.1  Information Sources and Analysis
DOI:10.1145/3457682.3457758
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Bronze
 
<RECORD 177>
 
Accession number:20214111012762
Title:Design of visible-near infrared athermal continuous zoom optical system
Title of translation:&#21487;&#35265;-&#36817;&#32418;&#22806;&#26080;&#28909;&#21270;&#36830;&#32493;&#21464;&#28966;&#20809;&#23398;&#31995;&#32479;&#35774;&#35745;
Authors:Qu, Rui (1, 2); Guo, Huinan (1); Cao, Jianzhong (1); Yang, Jianfeng (1) 
Author affiliation:(1) Xi'an Institute of Optical and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Univisity of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue:9
Issue date:September 25, 2021
Publication year:2021
Article number:20210090
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">The primary aberration of each lens group will be changed with their movement, and the change of environment temperature will also lead to defocus, both of which will cause a lot of difficulties in the zoom lens design process. To solve this problem, aberration functions do depend and not depend on group movement were introduced based on optical aberration theory, and lens power distribution and material selection method were discussed with the achromatic and athermal design model futher. A visible-near infrared (Vis-Nir) optical system under the requirements of F/5, focal length of 8-120 mm, focal plane diameter of 6.2 mm, work waveband of 0.48-0.68 &mu;m and 0.7-0.9 &mu;m was designed with mechanically compensated method and optical passive athermal technology. The proposed zoom lens system, which used 7 kinds of common optical glass, consists of 12 groups 16 lenses, total length of only 90 mm, has good image quality and tolerance character among the zoom range within &minus;40~60 &#8451;.<br/></div> &copy; 2021, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:15
Main heading:Aberrations
Controlled terms:Optical design - Optical glass - Group theory - Infrared devices - Optical systems
Uncontrolled terms:Athermal - Change of environment - Continuous zooms - Dehazing - Optical dehazing - Optical- - Primary aberration - Visible near-infrared - Wide-band - Zoom optical system
Classification code:741.1  Light/Optics - 741.3  Optical Devices and Systems - 812.3  Glass - 921.1  Algebra - 921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory
Numerical data indexing:Size 4.80E-07m to 6.80E-07m, Size 6.20E-03m, Size 7.00E-07m to 9.00E-07m, Size 8.00E-03m to 1.20E-01m, Size 9.00E-02m
DOI:10.3788/IRLA20210090
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 178>
 
Accession number:20210109710833
Title:Pixel-wise ordinal classification for salient object grading
Authors:Liu, Yanzhu (1); Wang, Yanan (2); Kong, Adams Wai Kin (1) 
Author affiliation:(1) School of Computer Science and Engineering, Nanyang Technological University, 639978, Singapore; (2) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Liu, Yanzhu(yzliu@ntu.edu.sg)
Source title:Image and Vision Computing
Abbreviated source title:Image Vision Comput
Volume:106
Issue date:February 2021
Publication year:2021
Article number:104086
Language:English
ISSN:02628856
CODEN:IVCODK
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:Driven by business intelligence applications for rating attraction of products in shops, a new problem &mdash; salient object grading is studied in this paper. In computer vision, plenty of salient object detection approaches have been proposed, while most existing studies detect objects in a binary manner: salient or not. This paper focuses on a new problem setting that requires detecting all salient objects and categorizing them into different salient levels. Based on that, a pixel-wise ordinal classification method is proposed. It consists of a multi-resolution saliency detector which detects and segments objects, an ordinal classifier which grades pixels into different salient levels, and a binary saliency enhancer which sharpens the difference between non-saliency and all other salient levels. Two new image datasets with salient level labels are constructed. Experimental results demonstrate that, on the one hand, the proposed method provides effective salient level predictions and on the other hand, offers very comparable performance with state-of-the-art salient object detection methods in the traditional problem setting.<br/> &copy; 2020 Elsevier B.V.
Number of references:23
Main heading:Deep neural networks
Controlled terms:Object recognition - Pixels - Grading - Object detection
Uncontrolled terms:Business intelligence applications - Image datasets - Ordinal classification - Salient object detection - Salient objects - State of the art
Classification code:461.4  Ergonomics and Human Factors Engineering - 723.2  Data Processing and Image Processing
DOI:10.1016/j.imavis.2020.104086
Funding details:  Number: MOE2016-T2-1-042, Acronym: MOE, Sponsor: Ministry of Education - Singapore;
Funding text:This work is supported by Ministry of Education , Singapore ( MOE2016-T2-1-042 (S)).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 179>
 
Accession number:20220211449112
Title:Tilt error correction of minitype theodolite's vertical shaft based on angular contact ball bearings
Title of translation:&#22522;&#20110;&#35282;&#25509;&#35302;&#29699;&#36724;&#25215;&#30340;&#23567;&#22411;&#32463;&#32428;&#20202;&#26041;&#20301;&#36724;&#20542;&#26012;&#35823;&#24046;&#20462;&#27491;
Authors:Li, Xiangyu (1, 2); Peng, Bo (1, 2); Jiang, Bo (1); Ruan, Ping (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 
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue:12
Issue date:December 25, 2021
Publication year:2021
Article number:20210172
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">The design of minitype theodolite's vertical shaft which based on angular contact ball bearings usually refer to similar model for estimation and analogy. This method can effectively improve the design efficiency as well as endowing the vertical shaft a better engineering practicability. However, these experience-based designs hardly reach the best options, hence leaves room for optimizing and improvements. The vertical shaft of a small theodolite was studied from tilt error correction. The shaft optimization parameters were determined based on the physical model. Then the design parameters of bearing outer end ring were optimized by using finite element analysis. At the same time, the selection of bearing fit clearance's design parameter values were analyzed through tilt error theoretical modeling. Meanwhile, the biaxial perpendicularity errors of this small theodolite with and without optimizing were both detected after partial load hoisting. The result shows that the biaxial perpendicularity error of optimized theodolite is lower with an approximate value of 6", compared unoptimized theodolite with an approximate value of 20". Tilt error of the rear vertical shaft is less than that before optimizing. The rationality and effectiveness of this optimization method mentioned are verified.<br/></div> Copyright &copy;2021 Infrared and Laser Engineering. All rights reserved.
Number of references:10
Main heading:Finite element method
Controlled terms:Error correction
Uncontrolled terms:Axis error - Design efficiency - Errors correction - Finite element analyse - Optimization parameter - Photoelectric theodolite - Physical modelling - Similar models - Tilt errors - Vertical shaft
Classification code:921.6  Numerical Methods
DOI:10.3788/IRLA20210172
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 180>
 
Accession number:20220811674420
Title:Investigation of wheel polishing technology based on industrial robot
Authors:Yao, Yongsheng (1, 2); Li, Qixin (1, 2); Shen, Le (1); DIng, Jiaoteng (1, 2); Ma, Zhen (1); Fan, Xuewu (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 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12071
Part number:1 of 1
Issue title:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing and Metrology Technologies
Issue date:2021
Publication year:2021
Article number:120710L
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650176
Document type:Conference article (CA)
Conference name:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing and Metrology Technologies 2021
Conference date:June 14, 2021  -  June 17, 2021
Conference location:Chengdu, China
Conference code:176906
Sponsor:Institute of Optics and Electronics (IOE), Chinese Academy of Sciences; The Chinese Optical Society (COS)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">In this paper, industrial robot is used as motion carrier and self-developed flexible wheel tool is used as polishing tool to realize low-cost, high-efficiency, and high-precision optical processing. Firstly, the mapping formula between the workpiece coordinates and the road point coordinates is deduced, and the position and posture data required for robot programming are obtained. Secondly, a new type of wheel polishing tool is designed, which controls the polishing pressure through a pneumatic floating structure to ensure the stability of the removal function. Finally, an off-axis paraboloid of &phi;345mm was processed using this technology. After three times of processing for 10 hours, the surface error converged from PV-2.111&lambda;, RMS-0.249&lambda; to PV-0.119&lambda;, RMS-0.01&lambda;. PV and RMS converged by 94% and 96%, respectively. This proves that the technology has the advantages of high efficiency and high precision, and is expected to be widely used in the field of precision optical processing.<br/></div> &copy; COPYRIGHT SPIE.
Number of references:17
Main heading:Polishing
Controlled terms:Wheels - Costs - Efficiency - Robot programming - Industrial robots
Uncontrolled terms:High-precision - Higher efficiency - Low-costs - Off-axis aspheric surfaces - Optical processing - Polishing technology - Polishing tool - Technology-based - Wheel polishing - Workpiece
Classification code:601.2  Machine Components - 604.2  Machining Operations - 723.1  Computer Programming - 731.5  Robotics - 731.6  Robot Applications - 911  Cost and Value Engineering; Industrial Economics - 913.1  Production Engineering
Numerical data indexing:Percentage 9.40E+01%, Percentage 9.60E+01%, Time 3.60E+04s
DOI:10.1117/12.2605412
Funding details:  Number: 2020GY-157, Acronym: -, Sponsor: -;
Funding text:This work is supported by the Shaanxi Province Key R&D Program (2020GY-157) and Youth Innovation Promotion
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 181>
 
Accession number:20215211375318
Title:Design of special cylinder support for reflective mirror in space optical instrument for laser communication
Authors:Song, Yang (1); Chai, Wenyi (1); Shen, Zhong (1); Ye, Jing (1, 2); Ma, Tengfei (1); Hu, Yongming (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:Ye, Jing(yejing@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12057
Part number:1 of 1
Issue title:Twelfth International Conference on Information Optics and Photonics, CIOP 2021
Issue date:2021
Publication year:2021
Article number:120570T
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510649897
Document type:Conference article (CA)
Conference name:12th International Conference on Information Optics and Photonics, CIOP 2021
Conference date:July 23, 2021  -  July 26, 2021
Conference location:Xi'an, China
Conference code:175384
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">The number of space optical instruments is growing with a quick pace. Reflective mirror is always a significant part in a space optical system, especially in the laser communication system. Support is used to connect reflective mirror to other structure. The paper focused on designing a cylinder support. Considering thermal condition in space, the paper gave a special design of support with some soft links. The paper made a comparison between traditional design scheme of cylinder support and new design scheme of special cylinder support. From the comparison, it could be concluded that new design scheme had better performance in the thermal condition. Later, modal analysis and some vibration analyses were done to verify the reliability and feasibility of the new design. The result showed the design scheme was good.<br/></div> &copy; 2021 COPYRIGHT SPIE.
Number of references:6
Main heading:Vibration analysis
Controlled terms:Optical systems - Optical instruments - Optical communication - Reliability analysis - Cylinders (shapes) - Modal analysis
Uncontrolled terms:Design scheme - Laser communication system - Performance - Reflective mirrors - Space optical system - Special cylinder support - Thermal condition - Vibrations analysis
Classification code:717.1  Optical Communication Systems - 741.3  Optical Devices and Systems - 921  Mathematics - 941.3  Optical Instruments
DOI:10.1117/12.2604298
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 182>
 
Accession number:20213510838944
Title:Design analysis and test verification of a rigid-flexible, dual-mode coupling support structure for space-based rectangular curved prisms
Authors:Jia, Xin-Yin (1, 2); Wang, Fei-Cheng (1); Li, Li-Bo (1); Zhang, Zhao-Hui (1); Liu, Jia (1); Hu, Bing-Liang (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:Hu, Bing-Liang(hbl@opt.ac.cn)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:60
Issue:25
Issue date:September 1, 2021
Publication year:2021
Pages:7563-7573
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">In view of the functional requirements of high reliability and stability support of optical components of space remote sensors, a rigid-flexible, dual-mode coupling support structure for space-based rectangular curved prisms (SRCPs) was designed. In-depth studies of the support principle and engineering realization of theSRCPs and optimization of the flexible adhesive structure were performed. Static and dynamic simulations were conducted on the mirror subassembly by means of finite element analysis, and test verification was also performed. The tests revealed that the surface shape error of the mirror subassembly after mechanical testing was 0.021&lambda;, the displacement of the mirror body was 0.008 mm, the inclination angle was&sim;0.8'', the mass of the mirror subassembly was 4.79 kg, the fundamental frequency was 283 Hz, and the maximum amplification of the total rms acceleration was 4.37. All indexes were superior to those of the design requirements. On this basis, bonding tests and mechanical tests of a rectangular curved prism reflector, a rectangular curved prism, and a rectangular plane reflector employing this proposed support structure were continued. The test results verified the reliability, stability, and universal applicability of the proposed rigid-flexible, dual-mode peripheral bonding support structure.<br/></div> &copy; 2021 Optical Society of America.
Number of references:19
Main heading:Mirrors
Controlled terms:Mechanical testing - Ground supports - Adhesives - Reflection - Rigid structures - Prisms - Optical remote sensing
Uncontrolled terms:Engineering realizations - Functional requirement - Fundamental frequencies - Inclination angles - Optical components - Space remote sensors - Support structures - Surface shape error
Classification code:408  Structural Design - 741.3  Optical Devices and Systems - 943.2  Mechanical Variables Measurements
Numerical data indexing:Frequency 2.83e+02Hz, Mass 4.79e+00kg, Size 8.00e-06m
DOI:10.1364/AO.431394
Funding details:  Number: 41706207, Acronym: NNSFC, Sponsor: National Natural Science Foundation of China;Number: 2019JQ-929, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;
Funding text:Funding. Natural Science Foundation of Shaanxi Province (2019JQ-929); National Natural Science Foundation of China (41706207).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 183>
 
Accession number:20214111005981
Title:Effect of pupil matching of cold shield on the fringe contrast of long-wave infrared spatial heterodyne spectroscopy
Authors:Han, Bin (1, 2); Feng, Yutao (1); Zhang, Zhaohui (1); Wu, Junqiang (1); Wu, Yang (1, 2); Sun, Jian (1); Wang, Pengchong (1); Chang, Chenguang (1); Li, Juan (1); Zhao, Yudi (1); Hu, Bingliang (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:Feng, Yutao(fytciom@126.com)
Source title:Applied Optics
Abbreviated source title:Appl. Opt.
Volume:60
Issue:29
Issue date:October 10, 2021
Publication year:2021
Pages:9241-9248
Language:English
ISSN:1559128X
E-ISSN:21553165
CODEN:APOPAI
Document type:Journal article (JA)
Publisher:The Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Matching the cold shield with the exit pupil of the fringe-imaging system of long-wave infrared (LWIR) spatial heterodyne spectroscopy (SHS) damages illumination uniformity of the interferogram and affects the fringe contrast, which is a significant parameter for LWIR SHS. The optical models of the fringe-imaging system considering and not considering the pupil matching of the cold shield are built to illustrate the effect on the fringe contrast. Simulations based on the optical design software ASAP are conducted to verify the fringe contrast loss for field-widened LWIR SHS. The result shows that the pupil matching of the cold shield decreases the fringe contrast of LWIR SHS and field-widened LWIR SHS by 0.049% and 0.053%, respectively, and the fringe contrast loss increases with the degree of deviation from the telecentric condition of the fringe-imaging system.<br/></div> &copy; 2021 Optical Society of America.
Number of references:20
Main heading:Imaging systems
Controlled terms:Infrared radiation - Optical heterodyning - Infrared devices - Optical design
Uncontrolled terms:Cold shield - Contrast loss - Exit pupil - Fringe contrasts - Illumination uniformity - Interferograms - Matchings - Optical modelling - Optical-design software - Spatial heterodyne spectroscopies
Classification code:741.1  Light/Optics - 746  Imaging Techniques
Numerical data indexing:Percentage 4.90E-02%, Percentage 5.30E-02%
DOI:10.1364/AO.439482
Funding details:  Number: 41005019, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XAB 2016A07, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: -, Sponsor: West Light Foundation of the Chinese Academy of Sciences;Number: 2019JQ-931,E1294301, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:Funding. National Natural Science Foundation of China (41005019); West Light Foundation of the Chinese Academy of Sciences (XAB 2016A07); Natural Science Basic Research Program of Shaanxi Province (2019JQ-931); West Light Cross-Disciplinary Innovation team of Chinese Academy of Sciences (E1294301).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 184>
 
Accession number:20214511111286
Title:Surface response correction method of light intensity detector in high energy laser measurement
Title of translation:&#39640;&#33021;&#28608;&#20809;&#27979;&#37327;&#20013;&#30340;&#20809;&#24378;&#25506;&#27979;&#22120;&#38754;&#21709;&#24212;&#26657;&#27491;&#26041;&#27861;
Authors:Xue, Fang (1, 2); Chen, Yongquan (1); Duan, Yaxuan (1); Lin, Hui (1); Da, Zhengshang (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 
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue date:October 25, 2021
Publication year:2021
Article number:20210215
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">In order to reduce the influence of the non-uniformity of the surface response of the intensity detector on the near field parameter measurement for the high-energy laser inertial confinement fusion device (ICF), a correction method for the non-uniformity of the light-intensity detector surface response in the near-field parameter measurement of the high-energy laser was proposed. Theoretically, a multi-point calibration linear correction model based on the high-energy laser near-field spatial evaluation factor was deduced, and a non-uniformity automatic correction device on surface response for high-uniformity linear output light intensity detector was designed and built. In order to verify the effectiveness of the proposed method, the surface response non-uniformity of a certain type of scientific-grade CCD was corrected. The surface response modulation degree of the detector was reduced from 1.42 to 1.08, and the contrast was reduced from 0.014 to 0.004. Compared with the two-point calibration method, the uniformity of the light intensity detector after correction using the proposed method in this article was greatly improved. The results show that this method can provide an effective technical means for the correction of the uniformity of the surface response of the light intensity detector in the parameter measurement of the high-energy laser ICF device in my country.<br/></div> &copy; 2021, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:16
Main heading:Modulation
Controlled terms:Calibration - Parameter estimation - High energy lasers - Inertial confinement fusion
Uncontrolled terms:Contrast - Correction method - High-energy lasers - Light intensity - Modulation degrees - Near fields - Non-uniformity of surface response - Nonuniformity - Parameter measurement - Surface response
Classification code:744.1  Lasers, General - 932.2.1  Fission and Fusion Reactions
DOI:10.3788/IRLA20210215
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 185>
 
Accession number:20213110716910
Title:Design of underwater large field of view zoom optical system
Title of translation:&#27700;&#19979;&#22823;&#35270;&#22330;&#36830;&#32493;&#21464;&#28966;&#20809;&#23398;&#31995;&#32479;&#35774;&#35745;
Authors:Qu, Rui (1, 2); Yang, Jianfeng (1); Cao, Jianzhong (1); Liu, Bo (1) 
Author affiliation:(1) Xi'an Institute of Optical and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Univisity of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue:7
Issue date:July 25, 2021
Publication year:2021
Article number:20200468
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">Under the requirements of an underwater large field of view zoom optical system, the selection of optical window and its influence on objective lens were discussed, by which the relative distortion and lateral color induced by the plane window were analyzed and corresponding design methods were given. Regarding the special envelope and working distance requirements of the underwater optical system, a three-part zoom system design model and the design method of the corresponding focusing components were provided by introducing aberration stabilizers in the PNNP structure, dynamic aberration correction capability of the optical structure was improved, also, the problems of the cam curve breakpoints were avoided; by setting the focus lens group in the objective parts, close-range imaging through the entire zoom range was guaranteed. A 4 K underwater large field of view zoom optical system was completed using 3840&times;2160 high-sensitivity CMOS detector, with 0.5 m-inf working distance, 0.48&minus;0.64 &mu;m work waveband, constant F number of up to 2.8 and 5.9&deg;&minus;62&deg; full field of view. The image quality and tolerance characters are validated by an assembled lens and its underwater imaging experiments.<br/></div> Copyright &copy;2021 Infrared and Laser Engineering. All rights reserved.
Number of references:31
Main heading:Optical design
Controlled terms:Systems analysis - Optical systems - Aberrations - Optical instrument lenses - Underwater imaging - Structural design
Uncontrolled terms:Dynamic aberrations - High sensitivity - Imaging experiments - Large field of views - Optical structures - Relative distortion - Working distances - Zoom optical system
Classification code:408.1  Structural Design, General - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 746  Imaging Techniques - 912.3  Operations Research - 961  Systems Science
Numerical data indexing:Temperature 4.00e+00K
DOI:10.3788/IRLA20200468
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 186>
 
Accession number:20213110705823
Title:Adaptive Weighted Exposure Algorithm Based on Region Luminance Detection
Authors:Yang, Lei (1, 2); Zhang, Derui (1, 2); Cao, Jianzhong (1, 2); Zhang, Hui (1, 2); Wang, Hua (1, 2); Bian, He (2); Wang, Huawei (2) 
Author affiliation:(1) University of Chinese Academy of Sciences, Beijing; 100049, China; (2) Xi'an Institute of Optics and Precision Mechanics Chinese, Academy of Sciences, Xi'an; 710119, China 
Source title:2021 IEEE 3rd International Conference on Communications, Information System and Computer Engineering, CISCE 2021
Abbreviated source title:IEEE Int. Conf. Commun., Inf. Syst. Comput. Eng., CISCE
Part number:1 of 1
Issue title:2021 IEEE 3rd International Conference on Communications, Information System and Computer Engineering, CISCE 2021
Issue date:May 14, 2021
Publication year:2021
Pages:539-542
Article number:9445988
Language:English
ISBN-13:9780738112152
Document type:Conference article (CA)
Conference name:3rd IEEE International Conference on Communications, Information System and Computer Engineering, CISCE 2021
Conference date:May 14, 2021  -  May 16, 2021
Conference location:Beijing, China
Conference code:170477
Sponsor:IEEE
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">When the traditional global auto-exposure algorithm is applied to high contrast special scenes such as dark background and bright target, there is often over-exposure of the target, which leads to the loss of the key information of the subject concerned. To solve this problem, an adaptive weight exposure method based on regional brightness detection is proposed. Firstly, the whole imaging field of view is divided into several regions, and then the position of the target in the field of view is identified by independent judgment. Finally, the automatic exposure control of gray statistics is carried out according to the preset region weight. The experimental results show that the proposed method can effectively improve the image quality of the bright target or dark target in the dark background, avoid the phenomenon of the target too bright or too dark, and better capture the texture features of the target.<br/></div> &copy; 2021 IEEE.
Number of references:7
Main heading:Luminance
Controlled terms:Image enhancement - Textures
Uncontrolled terms:Adaptive weights - Auto exposure - Field of views - Gray statistics - High contrast - Imaging fields - Texture features
Classification code:903.3  Information Retrieval and Use
DOI:10.1109/CISCE52179.2021.9445988
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 187>
 
Accession number:20214911288601
Title:Development and prospects of deployable space optical telescope technology
Title of translation:&#21487;&#23637;&#24320;&#31354;&#38388;&#20809;&#23398;&#26395;&#36828;&#38236;&#25216;&#26415;&#21457;&#23637;&#21450;&#23637;&#26395;
Authors:Hu, Bin (1, 2); Li, Chuang (1); Xiang, Meng (2); Li, Liangliang (2); Dai, Haobin (2); Yao, Pei (2); Li, Xuyang (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:Li, Chuang
Source title:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
Abbreviated source title:Hongwai yu Jiguang Gongcheng Infrared Laser Eng.
Volume:50
Issue:11
Issue date:November 25, 2021
Publication year:2021
Article number:20210199
Language:Chinese
ISSN:10072276
Document type:Journal article (JA)
Publisher:Chinese Society of Astronautics
Abstract:<div data-language="eng" data-ev-field="abstract">In order to obtain higher angular resolution, the aperture of the space optical telescope is getting larger and larger, and the space telescope with aperture of more than four meters will be difficult to break through the limitation of the effective envelope of the fairing of the existing launch vehicle. On the other hand, the micro-nano optical remote sensing satellite, which has great advantages in terms of development cycle and cost, also has extensive requirements for improving spatial resolution and light gathering area, requiring a smaller launch volume to accommodate a large opto-mechanical system to reduce the launch cost. Deployable space telescopes will be a feasible solution to overcome the limitations of launch size. The research status of deployable space telescopes was reviewed from the aspects of large aperture space astronomical telescopes, segmented mirror deployable telescopes for earth observation and micro-nano satellite optical telescopes deploying along optical axis. Some key technologies and development trends involved in deployable space telescopes were described and summarized.<br/></div> &copy; 2021, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
Number of references:86
Main heading:Optical remote sensing
Controlled terms:Optomechanics - Earth (planet) - Mirrors - Space telescopes
Uncontrolled terms:Deployable mechanisms - Development costs - High angular resolutions - High resolution - Large aperture - Micro/nano - Optical remote sensing - Optical telescope technology - Remote sensing satellites - Segmented primary mirrors
Classification code:741.3  Optical Devices and Systems - 961  Systems Science
DOI:10.3788/IRLA20210199
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 188>
 
Accession number:20213910941992
Title:Hyperspectral Abnormal Target Detection Based on Extended Multi-attribute Profile and Fast Local RX Algorithm
Title of translation:&#32467;&#21512;&#25193;&#23637;&#22810;&#23646;&#24615;&#21078;&#38754;&#19982;&#24555;&#36895;&#23616;&#37096;RX&#31639;&#27861;&#30340;&#39640;&#20809;&#35889;&#24322;&#24120;&#30446;&#26631;&#26816;&#27979;
Authors:A, Ruhan (1); Yuan, Xiaobin (2); Mu, Xiaodong (1); Wang, Jingyi (3) 
Author affiliation:(1) College of Operational Support, Rocket Force University of Engineering, Xi'an; 710025, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Computer Science, Xi'an Shiyou University, Xi'an; 710065, China 
Corresponding author:Mu, Xiaodong(Mu_403@163.com)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:9
Issue date:September 25, 2021
Publication year:2021
Pages:289-299
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">In order to further improve the speed and accuracy of hyperspectral abnormal target detection, a fast anomaly target detection method based on extended multi-attribute profiles and improved Reed-Xiaoli is proposed. Extended multi-attribute Profiles are extracted from the original hyperspectral images by mathematical morphological transformations. Moreover, a novel fast local Reed-Xiao algorithm is also proposed. Iteratively update inverse matrix of covariance using matrix inverse lemma, thereby reducing the computational complexity of the Mahalanobis distance. The combination of extended multi-attribute profiles and fast local Reed-Xiaoli detector effectively utilizes the spectral information and spatial information of hyperspectral images, it greatly improves the detection accuracy and reduce the running time. Experimental results on three real data sets show the AUC value of the algorithm in this paper is 0.996 7, 0.985 6 and 0.981 6 respectively. The operation time is 21.218 1 s, 15.192 8 s and 32.337 9 s respectively. The proposed method has obvious advantages in detection accuracy and speed, and has good practical value.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:22
Main heading:Anomaly detection
Controlled terms:Inverse problems - Spectroscopy - Covariance matrix - Iterative methods - Mathematical transformations - Image enhancement - Mathematical morphology
Uncontrolled terms:Abnormal target detections - Anomaly detection - Detection accuracy - Extended multi-attribute profile - Fast local RX - HyperSpectral - Matrix inverse - Matrix inverse lemma - Multi-attributes - Reed-xiaoli
Classification code:921  Mathematics - 921.3  Mathematical Transformations - 921.6  Numerical Methods
Numerical data indexing:Time 1.00E00s, Time 8.00E+00s, Time 9.00E+00s
DOI:10.3788/gzxb20215009.0910002
Funding details:  Number: 41301480,62002286, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:item&#65306;National Natural Science Foundation of China&#65288;Nos.41301480&#65292;62002286&#65289;
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 189>
 
Accession number:20215011322023
Title:A Pose Measurement Algorithm of Space Target Based on Monocular Vision and Accuracy Analysis
Title of translation:&#19968;&#31181;&#22522;&#20110;&#21333;&#30446;&#35270;&#35273;&#30340;&#31354;&#38388;&#30446;&#26631;&#20301;&#23039;&#27979;&#37327;&#31639;&#27861;&#21450;&#20854;&#31934;&#24230;&#23450;&#37327;&#20998;&#26512;
Authors:Dong, Yongying (1); Zhang, Gaopeng (2); Chang, Sansan (2); Zhang, Zhi (2); Li, Yanjie (3) 
Author affiliation:(1) School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an; 710121, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (3) School of Mechatronic Engineering, Xi'an Technological University, Xi'an; 710021, China 
Corresponding author:Zhang, Gaopeng(zhanggaopeng@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:11
Issue date:November 25, 2021
Publication year:2021
Article number:1112003
Language:English
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Aiming at the low efficiency of traditional orthogonal iterative algorithm, an improved orthogonal iterative algorithm is proposed to measure the pose of space objects based on monocular vision. Firstly, based on the traditional orthogonal iterative algorithm, the translation vector in the iterative process was eliminated. The initial value of the rotation matrix was solved by using the parallel perspective model instead of the weak perspective projection model, so as to accelerate the solution process of the orthogonal iterative algorithm. Secondly, simulation experiments are used to study the effects of the extraction accuracy of the imaging point, the accuracy of three-dimensional coordinate of the space feature point, the calibration accuracy of the camera principal point, the calibration accuracy of the camera focal length and the number of space feature points on the accuracy and efficiency of the algorithm. Based on the results of the simulation experiments, Taguchi method is used to quantitatively analyze the influence of each factor on the accuracy of the algorithm, and find out the factor that has the greatest influence on the accuracy of the improved orthogonal iteration algorithm. Finally, the performance of the proposed improved orthogonal iteration algorithm is tested by the physical experiments. The physical experiments prove that the proposed method is accurate, and takes shorter run time than that of traditional orthogonal iteration algorithm. Based on the results of the orthogonal experiment, the accuracy of the improved orthogonal iteration algorithm could meet different demand of different space task by controlling the different influence factors.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:28
Main heading:Taguchi methods
Controlled terms:Efficiency - Vision - Signal to noise ratio - Iterative methods - Calibration - Cameras
Uncontrolled terms:Calibration accuracy - Improved orthogonal iteration algorithm - Iteration algorithms - Iterative algorithm - Monocular vision - Orthogonal iteration - Physical experiments - Pose measurement - Space targets - Taguchi's methods
Classification code:716.1  Information Theory and Signal Processing - 742.2  Photographic Equipment - 913.1  Production Engineering - 913.3  Quality Assurance and Control - 921.6  Numerical Methods - 922.2  Mathematical Statistics
DOI:10.3788/gzxb20215011.1112003
Funding details:  Number: 51905529, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;
Funding text:The National Natural Science Foundation of China (No.51905529)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 190>
 
Accession number:20215211385331
Title:Energy Efficiency Analysis in Modified GoF Spectrum Sensing-Based AF Relay Cooperative Cognitive Sensor Network with Energy Harvesting    (Open Access)
Authors:Mi, Yin (1, 2); Lu, Guangyue (2); Gao, Wenbin (2) 
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics of CAS, University of Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Communications and Information Engineering, Xi'An University of Posts and Telecommunications, Xi'an; 710121, China 
Corresponding author:Lu, Guangyue(tonylugy@163.com)
Source title:Security and Communication Networks
Abbreviated source title:Secur. Commun. Networks
Volume:2021
Issue date:2021
Publication year:2021
Article number:3340525
Language:English
ISSN:19390114
E-ISSN:19390122
Document type:Journal article (JA)
Publisher:Hindawi Limited
Abstract:<div data-language="eng" data-ev-field="abstract">In this paper, we propose a joint sensing duration and transmission power allocation scheme to maximize the energy efficiency (EE) of the secondary user (SU) in a cooperative cognitive sensor network (CSN). At the initial time slot of the frame, the secondary transmitter (ST) performs energy harvesting (EH) and spectrum sensing simultaneously using power splitting (PS) protocol. The modified goodness of fit (GoF) spectrum sensing algorithm is employed to detect the licensed spectrum, which is not sensitive to an inaccurate noise power estimate. Based on the imperfect sensing results, the ST will act as an amplify-and-forward (AF) relay and assist in transmission of the primary user (PU) or transmit its own data. The SU's EE maximization problem is constructed under the constraints of meeting energy causality, sensing reliability, and PU's quality of service (QoS) requirement. Since the SU's EE function is a nonconvex problem and difficult to solve, we transform the original problem into a tractable convex one with the aid of Dinkelbach's method and convex optimization technique by applying a nonlinear fractional programming. The closed-form expression of the ST's transmission power is also derived through Karush-Kuhn-Tucker (KKT) and gradient method. Simulation results show that our scheme is superior to the existing schemes.<br/></div> &copy; 2021 Yin Mi et al.
Number of references:29
Main heading:Energy efficiency
Controlled terms:Convex optimization - Quality of service - Gradient methods - Energy harvesting - Sensor networks
Uncontrolled terms:Amplifyand-forward relay - Energy efficiency analysis - Goodness of fit - Initial time - Power splitting - Secondary user - Sensors network - Spectrum sensing - Timeslots - Transmission power allocation
Classification code:525.2  Energy Conservation - 525.5  Energy Conversion Issues - 921.6  Numerical Methods
DOI:10.1155/2021/3340525
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 191>
 
Accession number:20220211446982
Title:High-power ultraviolet laser at 343 nm based on femtosecond fiber laser system
Authors:Wu, Tianhao (1, 2); Li, Feng (1); Yang, Xiaojun (1) 
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Li, Feng(lifeng@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12060
Part number:1 of 1
Issue title:AOPC 2021: Advanced Laser Technology and Applications
Issue date:2021
Publication year:2021
Article number:120601I
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510649958
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Advanced Laser Technology and Applications, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175856
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">Femtosecond laser has the characteristics of short pulse width and high peak power and is widely used in laser micromachiningoptical communication, medical applications and other fields. Compared with infrared lasers, ultraviolet lasers have shorter wavelength and higher single-photon energy, which makes the processing heat affected area smaller and can perform precise processing on special materials. With the advancement of science and technology, people are demanding higher precision in laser processing, then ultrashort pulse lasers in the ultraviolet spectrum have gradually came into people's sight. At present, there have been many reports on femtosecond solid-state ultraviolet lasers domestic and overseas. However, solid-state lasers are bulky and difficult to dissipate heat. In contrast, the fiber femtosecond laser has a stable and compact structure and is more suitable for industrial processing. However, it is understood that there are very few domestic studies on femtosecond fiber lasers in the ultraviolet band. In recent years, fiber laser technology has been greatly developed. Femtosecond fiber lasers have good beam quality and high laser directivity, besides it can provide high-power, high-repetition output in the near-infrared spectrum. In this experiment, we propose an ultraviolet femtosecond laser system based on &beta;-BaB2O4 crystal. The fundamental frequency laser passes through two BBO crystals to generate second harmonic generation and third harmonic generation. At the same time, we adjust the angle at which each beam of laser passes through each crystal to meet the conditions of phase matching and obtain the maximum conversion efficiency. It's worth mentioning that the system has a compact structure, low cost, and high conversion efficiency. Besides, it has broad application prospects.<br/></div> &copy; 2021 SPIE.
Number of references:9
Main heading:Ultraviolet lasers
Controlled terms:Optical frequency conversion - Infrared devices - Conversion efficiency - Harmonic analysis - Phase matching - Femtosecond lasers - Fiber lasers - Fibers - Harmonic generation - Particle beams  - Medical applications - Optical parametric oscillators
Uncontrolled terms:Compact structures - Femtosecond fiber lasers - Harmonic generation and mixing - High peak power - High power - Infrared-laser - Laser systems - Nonlinear crystals - Short pulse width - Ultraviolet
Classification code:525.5  Energy Conversion Issues - 713  Electronic Circuits - 741.1.1  Nonlinear Optics - 744.1  Lasers, General - 744.4  Solid State Lasers - 921.6  Numerical Methods - 932.1  High Energy Physics
Numerical data indexing:Size 3.43E-07m
DOI:10.1117/12.2606840
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 192>
 
Accession number:20220211444599
Title:Design of hybrid refractive-diffractive star sensor optical system with wide field and small F-number
Authors:Ma, Zehua (1, 2); Wang, Hu (1, 2); Shen, Yang (1, 2); Xue, Yaoke (1, 2); Yan, Haoyu (1, 2) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi; Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12069
Part number:1 of 1
Issue title:AOPC 2021: Novel Technologies and Instruments for Astronomical Multi-Band Observations
Issue date:2021
Publication year:2021
Article number:120690W
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650138
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Novel Technologies and Instruments for Astronomical Multi-Band Observations, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175885
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">In order to improve the measurement accuracy and detection ability of the star sensor, this paper uses a double Gauss structure with conic aspheric surface and hybrid refractive-diffractive to design an optical system with large field of view of 25&deg;and large relative aperture of 1/1.156, and only 6 lenses are used. First, According to the selected CMOS APS sensor performance parameters, the entrance pupil diameter, field of view, focal length and wavelength range are determined. The field of view is 25&deg;, F number is 1.156, focal length is 52mm, entrance pupil diameter is 45mm, the wavelength range is 500-800nm. The detection of 6 magnitude stars is realized, the probability of capturing 5 navigation stars is 100%, and autonomous navigation recognition is realized. Then, the glass material selection and structure optimization of the optical system are conducted, the optical system is optimized by introducing two conic aspheric surfaces and a diffractive surface. Finally, the influence of the diffraction efficiency of the diffractive optical element on the signal-To-noise ratio is analyzed. After analysis of image quality, the shape of diffuse spot in each field of view is approximately circular, the energy is close to Gaussian distribution, more than 90% of the energy is concentrated in 3&times;3 pixels, lateral color is less than 1.06&mu;m, and relative distortion is less than 0.87%. The optical system only uses six lenses, the imaging quality meets the imaging requirements of the star sensor, and is beneficial to improve the accuracy and detection capability of the star sensor.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:11
Main heading:Optical design
Controlled terms:Glass - Image quality - Lenses - Optical systems - Signal to noise ratio - Stars - Structural optimization
Uncontrolled terms:Aspheres - Aspheric surfaces - Entrance pupil - F/number - Field of views - Hybrid refractive-diffractive - Large field of view. - Large field of views - Star sensors - Stars: Be
Classification code:657.2  Extraterrestrial Physics and Stellar Phenomena - 716.1  Information Theory and Signal Processing - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 812.3  Glass - 921.5  Optimization Techniques
Numerical data indexing:Percentage 1.00E+02%, Percentage 8.70E-01%, Percentage 9.00E+01%, Size 1.06E-06m, Size 4.50E-02m, Size 5.00E-07m to 8.00E-07m, Size 5.20E-02m
DOI:10.1117/12.2606601
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 193>
 
Accession number:20220211444597
Title:Optimal design of aspheric Offner compensator based on computer aided program
Authors:Meng, Wen (1, 2); Ma, Zhen (2) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi; Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12069
Part number:1 of 1
Issue title:AOPC 2021: Novel Technologies and Instruments for Astronomical Multi-Band Observations
Issue date:2021
Publication year:2021
Article number:120690U
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650138
Document type:Conference article (CA)
Conference name:2021 Applied Optics and Photonics China: Novel Technologies and Instruments for Astronomical Multi-Band Observations, AOPC 2021
Conference date:June 20, 2021  -  June 22, 2021
Conference location:Beijing, China
Conference code:175885
Sponsor:Chinese Society for Optical Engineering
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">This paper presents an automatic optimization method in ZEMAX sequential mode. The user-defined evaluation function and optimization program are written in macro language, which is used to design the Offner null compensation optical path system. The system is designed with a 1m aperture parabolic lens as an example, of two-piece Offner compensation mirror and the optimal parameters of Offner compensator are obtained through optimization. The compensation residual PV value is better than &lambda;/10 and the RMS value is better than&lambda;/50. This method is a promising attempt of automatic design of compensator, which can design multiple groups of structures on the basis of improving design efficiency, and make the optimal structure which is more closer to actual demand.<br/></div> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:10
Main heading:Structural optimization
Controlled terms:Software testing - Macros
Uncontrolled terms:Automatic optimization - Computer-aided - Evaluation function - Function project - Macro. - Null test - Offne compensator - Optimal design - Optimization method - Sequential mode
Classification code:723.1  Computer Programming - 723.5  Computer Applications - 921.5  Optimization Techniques
Numerical data indexing:Size 1.00E00m
DOI:10.1117/12.2606582
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 194>
 
Accession number:20213410814836
Title:Influence of spectral characteristics of light sources on measuring space camera modulation transfer function    (Open Access)
Title of translation:&#20809;&#28304;&#20809;&#35889;&#29305;&#24615;&#23545;&#31354;&#38388;&#30456;&#26426;&#35843;&#21046;&#20256;&#36882;&#20989;&#25968;&#26816;&#27979;&#30340;&#24433;&#21709;    (Open Access)
Authors:Liu, Shang-Kuo (1, 2); Wang, Tao (1); Li, Kun (1); Cao, Kun (1); Zhang, Xi-Bin (1); Zhou, Yan (1); Zhao, Jian-Ke (1); Yao, Bao-Li (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Liu, Shang-Kuo(liushangkuo@opt.ac.cn)
Source title:Wuli Xuebao/Acta Physica Sinica
Abbreviated source title:Wuli Xuebao
Volume:70
Issue:13
Issue date:July 5, 2021
Publication year:2021
Article number:134208
Language:Chinese
ISSN:10003290
CODEN:WLHPAR
Document type:Journal article (JA)
Publisher:Institute of Physics, Chinese Academy of Sciences
Abstract:<div data-language="eng" data-ev-field="abstract">Modulation transfer function (MTF) measurement is a major means to evaluate the imaging quality of a space camera. The influence caused by the spectral characteristic of light source on the MTF results is not negligible, because the transmittance and color aberration of optical systems, and quantum efficiency of the space camera detectors are all spectrally related. Thus, MTF results tested by different light sources are different from each other. To address this problem, we propose a method to analyze the influence of spectral characteristics of light sources on measuring the MTF of space cameras. In addition, the devices and methods are designed to calibrate the spectral response and monochrome point spread function (PSF) of space camera. A Sigma lens (focal length: 1000mm, F number: 5.6) and a Cannon EOS 5DSR camera (pixel size: 4.14 &mu;m) are combined into an experimental space camera, whose spectral response is calibrated with a monochromator (Omno30300, NBeT) and a spectral radiometer (FieldSpec, ASD). We calibrate the monochrome PSF of the Sigma lens with the same monochromator and a CCD (PIXIS 1024, Princeton Instruments, pixel size: 13 &mu;m) micro-measuring system (20X objective). During the calibration of spectral response and monochrome PSF, the same collimator (focus: 5000 mm, F number: 10) is used. With using the proposed method and those calibrating data, we compute the theoretical values of the MTF of a space camera measured separately with five different light sources. The results indicate that MTF measured by a xenon lamp is greatly different from those MTFs measured by the other four light sources. Comparisons of those theoretically calculated MTFs, separately, show that the MTF measured by a tungsten halogen lamp is greater than the MTF measured by a xenon lamp at each spatial frequency. The deviation between those two lamps reaches a maximum value of 0.075 in the medium-high frequency zone. Furthermore, in order to verify those theoretical conclusions, a platform including a collimator and the previous space camera is constructed. The MTFs measured by a tungsten halogen lamp and a xenon lamp are computed with the slanted-edge method respectively. The results demonstrate that the distributions and deviations of the MTFs tested by those two lamps are identical to those theoretical results at each spatial frequency, with the maximum deviation being 0.057. The theoretical and experimental results demonstrate that the suggested method can accurately calculate the influence of spectral characteristics of light sources on measuring MTF of space cameras. The proposed method can also be adopted to investigate the influence of spectral characteristics of light sources on MTF of optical systems in the design or test stages.<br/></div> &copy; 2021 Chinese Physical Society.
Number of references:25
Main heading:Optical transfer function
Controlled terms:Modulation - Monochromators - Cameras - Pixels - Tungsten - Optical systems - Xenon
Uncontrolled terms:High frequency HF - Modulation transfer function measurements - Slanted-edge method - Spectral characteristics - Spectral radiometers - Spectral response - Theoretical values - Tungsten halogen lamp
Classification code:543.5  Tungsten and Alloys - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 742.2  Photographic Equipment - 804  Chemical Products Generally
Numerical data indexing:Size 1.00e+00m, Size 1.30e-05m, Size 4.14e-06m, Size 5.00e+00m
DOI:10.7498/aps.70.20201575
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Gold
 
<RECORD 195>
 
Accession number:20210809975869
Title:Techniques for On-orbit Calibration of Space Optical Imaging Systems Based on Auto-collimation
Title of translation:&#22522;&#20110;&#33258;&#20934;&#30452;&#21407;&#29702;&#30340;&#31354;&#38388;&#20809;&#23398;&#25104;&#20687;&#31995;&#32479;&#22312;&#36712;&#20960;&#20309;&#23450;&#26631;&#25216;&#26415;
Authors:Zhao, Hengxiang (1, 2); Li, Libo (1); Feng, Yutao (1); Li, Yong (1); Liu, Wei (3); Wu, Junqiang (1); Yan, Peng (1); Bai, Qinglan (1) 
Author affiliation:(1) Xi'an Institute of Optics Precision Mechanic of Chinese Academy of Sciences, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Xi'an Research Institute of Surveying and Mapping, Xi'an; 710054, China 
Corresponding author:Feng, Yutao(fytciom@126.com)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:1
Issue date:January 25, 2021
Publication year:2021
Article number:0112003
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:Through the analysis of imaging principle, simulation of optical model and construction of the principle prototype, the main factors affecting the calibration accuracy of the autocollimation calibration system in the experimental environment are discussed, and the main issues of the calibration system are put forward, which should be noticed in the design and work, including pixel size selection, image point location algorithm, focus amount calculation and system installation error. According to the analysis results, the calibration error of the principle prototype is corrected. Finally, the calibration accuracy of the principle prototype is less than 0.4 mm, and the calibration accuracy of the rotation in X, Y and Z directions are less than 0.6", 0.6" and 12" respectively. The relative error of accuracy is better than 0.2%.<br/> &copy; 2021, Science Press. All right reserved.
Number of references:18
Main heading:Calibration
Controlled terms:Ion beams - Errors
Uncontrolled terms:Calibration accuracy - Calibration error - Calibration system - Experimental environment - Imaging principle - On-orbit calibration - Optical imaging system - System installation
Classification code:932.1  High Energy Physics
Numerical data indexing:Percentage 2.00e-01%, Size 4.00e-04m
DOI:10.3788/gzxb20215001.0112003
Funding details:  Number: 2019JQ-931, Acronym: -, Sponsor: -;Number: 41005019, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XAB 2016A07, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:Foundation item&#65306;National Natural Science Foundation of China&#65288;No. 41005019&#65289;&#65292;Fund for Young Scientists from West Academy of Sciences&#65288;No. XAB 2016A07&#65289;&#65292;Natural Science Basic Research Program of Shannxi China&#65288;No. 2019JQ-931&#65289;National Natural Science Foundation of China (No. 41005019), Fund for Young Scientists from West China, Chinese Academy of Sciences (No. XAB 2016A07), Natural Science Basic Research Program of Shannxi China (No. 2019JQ-931).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 196>
 
Accession number:20221311844089
Title:Classification of Common Urinary Pathogens Based on Hyperspectral Microscope Imaging
Authors:Tao, Chenglong (1, 2); Du, Jian (1); Wang, Quan (1, 3); Hu, Bingliang (1, 3); Zhang, Zhoufeng (1, 3) 
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; (3) Key Laboratory of Biomedical Spectroscopy of Xi'an, Xi'an; 710119, China 
Corresponding author:Zhang, Zhoufeng(zhangzhoufeng@opt.ac.cn)
Source title:Proceedings of 2021 IEEE 2nd International Conference on Information Technology, Big Data and Artificial Intelligence, ICIBA 2021
Abbreviated source title:Proc. IEEE Int. Conf. Inf. Technol., Big Data Artif. Intell., ICIBA
Part number:1 of 1
Issue title:Proceedings of 2021 IEEE 2nd International Conference on Information Technology, Big Data and Artificial Intelligence, ICIBA 2021
Issue date:2021
Publication year:2021
Pages:850-853
Language:English
ISBN-13:9781665428767
Document type:Conference article (CA)
Conference name:2nd IEEE International Conference on Information Technology, Big Data and Artificial Intelligence, ICIBA 2021
Conference date:December 17, 2021  -  December 19, 2021
Conference location:Chongqing, China
Conference code:176951
Sponsor:Chengdu Union Institute of Science and Technology; Chongqing Geeks Education Technology Co., Ltd; Chongqing Global Union Academy of Science and Technology; Chongqing University of Technology; Global Union Academy of Science and Technology; IEEE Beijing Section
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">All the time, common pathogens in urine have been threatening human health even lives. Though Chromogenic plates is able to detect urinary bacteria, another technique and material need to be introduced for coloration. However, this kind of technique and material is not always specific. Therefore, how to rapidly detect and classify these bacteria is a tricky challenge waiting to be overcome. For solving this problem, we use hyperspectral imaging (HSI) and random forest (RF) to classify four strains of common pathogens in the urinary, which include E.faeca, K.pneum, S.aureu, and S.pneum. HSI is able to obtain spatial and hyperspectral information of the object. RF boosts classifying accuracy by combining many decision trees. Utilizing HSI and RF, we find that these bacteria can be separated well at the cellular level.<br/></div> &copy; 2021 IEEE.
Number of references:11
Main heading:Bacteria
Controlled terms:Decision trees - Pathogens - Spectroscopy - Hyperspectral imaging - Random forests
Uncontrolled terms:Colouration - Human health - HyperSpectral - Hyperspectral information - Hyperspectral microscope imaging - Microscope imaging - Random forests - Separated wells - Spatial informations - Urinary pathogen
Classification code:461.9  Biology - 723.4.2  Machine Learning - 746  Imaging Techniques - 921.4  Combinatorial Mathematics, Includes Graph Theory, Set Theory - 961  Systems Science
DOI:10.1109/ICIBA52610.2021.9687907
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 197>
 
Accession number:20220811682279
Title:Design of off-axis compact optical system with large relative aperture and large field of view
Authors:Ren, Zhiguang (1, 2); Li, Xuyang (1); Wang, Wei (1); Yao, Rui (1, 2); Ma, Zixuan (1, 2); Chu, Nanqing (1, 2) 
Author affiliation:(1) Space Optics Technology Lab, Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Li, Xuyang(lixuyang2004@126.com)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:12070
Part number:1 of 1
Issue title:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Issue date:2021
Publication year:2021
Article number:1207005
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510650152
Document type:Conference article (CA)
Conference name:10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes 2021
Conference date:June 14, 2021  -  June 17, 2021
Conference location:Chengdu, China
Conference code:176905
Sponsor:Institute of Optics and Electronics (IOE), Chinese Academy of Sciences; The Chinese Optical Society (COS)
Publisher:SPIE
Abstract:<div data-language="eng" data-ev-field="abstract">In order to deal with the threat of space debris to space experiment platforms and equipment, three-mirror anastigmatic system, which has the characteristics of light weight, small size and good optical performance, are used for space debris detection and detailed imaging. With the development of freeform surfaces, this article shows a new type of structure which has good optical performance and simple complexity of assembly and adjustment. The first step is to analyze the calculation method of the initial structure parameters of TMA system, and then the secondary mirror adopts the XY polynomial freeform surface. The primary mirror is reused as tertiary mirror, and the design of a new type TMA system is finally completed. Its effective focal length is 400 mm, the field of view (FOV) is 2&deg;&times;4&deg;, F/# is 5. At the Nyquist frequency 108lp/mm, the MTF value of this system is greater than 0.588. The maximum distortion is less than 0.80%. The results show that the imaging quality of the system meets the design requirements in the effective field of view.<br/></div> &copy; 2021 SPIE
Number of references:10
Main heading:Optical systems
Controlled terms:Mirrors - Space debris - Space platforms
Uncontrolled terms:Aperture fields - Field of views - Free-form surface - Integrated designs - Large field of views - Large relative aperture - Off-axis - Optical performance - TMA system - XY polynomial
Classification code:655.1  Spacecraft, General - 656.1  Space Flight - 741.3  Optical Devices and Systems
Numerical data indexing:Percentage 8.00E-01%, Size 4.00E-01m
DOI:10.1117/12.2604049
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 198>
 
Accession number:20202608862729
Title:Heart-Rate Monitoring with an Ethyl Alpha-Cyanoacrylate Based Fiber Fabry-Perot Sensor
Authors:Li, Yang (1); Dong, Bo (1); Chen, Enqing (2); Wang, Xiaoli (2); Zhao, Yudi (2) 
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, China; (2) University of Chinese Academy of Sciences, Beijing, China 
Corresponding author:Dong, Bo(bdong@opt.ac.cn)
Source title:IEEE Journal of Selected Topics in Quantum Electronics
Abbreviated source title:IEEE J Sel Top Quantum Electron
Volume:27
Issue:4
Issue date:July-August 2021
Publication year:2021
Article number:9115895
Language:English
ISSN:1077260X
E-ISSN:15584542
CODEN:IJSQEN
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc., United States
Abstract:Heart-rate monitoring with an ethyl alpha-cyanoacrylate (EtCNA) based fiber Fabry-Perot (F-P) sensor is presented. The fiber F-P sensor is fixed in a capillary tube by using the EtCNA binder. Due to the lower Young's modulus of the EtCNA, the sensor can detect low frequency vibration with a high sensitivity. The fiber sensor is attached in a specially designed bracket to obtain the stable data. When the sensor with bracket is put on the human body, the heart-rate can be monitored accurately by monitoring the laser intensity variation induced by the heartbeat. Experimental results show that the sensor has the strain sensitivity of 2.57 pm/&mu;N with good responses to low frequency vibrations of 1 Hz, 2 Hz and 3 Hz. The maximum and the minimum mean square deviations of the volunteers' data are 4.434210 and 0.667499, respectively. Moreover, it has good adaptability to measure the heart-rate on different positions of human body, such as wrist, chest and neck. Due to the advantages of small size, low cost, good adaptability, pollution-free and no harm to body. Our proposed sensor is expected to be widely used in heart disease monitoring.<br/> &copy; 1995-2012 IEEE.
Number of references:39
Main heading:Heart
Controlled terms:Patient monitoring - Elastic moduli - Fabry-Perot interferometers - Fiber optic sensors - Fibers
Uncontrolled terms:Fiber Fabry-Perot - Fiber Fabry-Perot sensor - Heart-rate monitoring - High sensitivity - Laser intensities - Low-frequency vibration - Minimum mean squares - Strain sensitivity
Classification code:461.2  Biological Materials and Tissue Engineering - 461.6  Medicine and Pharmacology - 741.1.2  Fiber Optics - 941.3  Optical Instruments - 951  Materials Science
Numerical data indexing:Frequency 1.00e+00Hz, Frequency 2.00e+00Hz, Frequency 3.00e+00Hz
DOI:10.1109/JSTQE.2020.3002084
Funding details:  Number: Y829321213, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:Manuscript received April 13, 2020; revised June 3, 2020; accepted June 8, 2020. Date of publication June 12, 2020; date of current version July 14, 2020. This work is supported in part by the CAS Pioneer Hundred Talents Program Y829321213. (Corresponding author: Bo Dong.) Yang Li is with the State Key Laboratory of Transient Optics and Photonics, Xi&rsquo;an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi&rsquo;an 710119, China, and also with the University of Chinese Academy of Sciences, Beijing 100049, China (e-mail: liyang185@mails.ucas.ac.cn).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 199>
 
Accession number:20212010361118
Title:Photonic radio frequency channelizers based on Kerr optical micro-combs    (Open Access)
Authors:Tan, Mengxi (1); Xu, Xingyuan (2); Wu, Jiayang (1); Nguyen, Thach G. (3); Chu, Sai T. (4); Little, Brent E. (5); Morandotti, Roberto (6, 7); Mitchell, Arnan (3); Moss, David J. (1) 
Author affiliation:(1) Optical Sciences Centre, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) Electro-Photonics Laboratory, Department of Electrical and Computer Systems Engineering, Monash University, VIC; 3800, Australia; (3) School of Engineering, RMIT University, Melbourne; VIC; 3001, Australia; (4) Department of Physics, City University of Hong Kong, Hong Kong, Hong Kong; (5) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (6) INRS &#1023; Energie, Mat&eacute;riaux et T&eacute;l&eacute;communications, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (7) Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China 
Corresponding author:Moss, David J.(dmoss@swin.edu.au)
Source title:Journal of Semiconductors
Abbreviated source title:J. Semicond.
Volume:42
Issue:4
Issue date:April 2021
Publication year:2021
Article number:041302
Language:English
ISSN:16744926
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">We review recent work on broadband RF channelizers based on integrated optical frequency Kerr micro-combs combined with passive micro-ring resonator filters, with microcombs having channel spacings of 200 and 49 GHz. This approach to realizing RF channelizers offers reduced complexity, size, and potential cost for a wide range of applications to microwave signal detection.<br/></div> &copy; 2021 Chinese Institute of Electronics.
Number of references:178
Main heading:Natural frequencies
Controlled terms:Optical resonators - Optical materials - Microwave resonators
Uncontrolled terms:Channel spacings - Channelizers - Microcombs - Microring resonator - Microwave signal detection - Optical frequency - Photonic radios - Reduced complexity
Classification code:714  Electronic Components and Tubes - 741.3  Optical Devices and Systems
Numerical data indexing:Frequency 2.00e+11Hz, Frequency 4.90e+10Hz
DOI:10.1088/1674-4926/42/4/041302
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Green
 
<RECORD 200>
 
Accession number:20204509461729
Title:Small Moving Target Recognition in Star Image with TRM
Authors:Du, Yun (1, 2, 3); Wen, Desheng (1); Liu, Guizhong (2); Qiu, Shi (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding authors:Du, Yun(duyun@opt.ac.cn); Qiu, Shi(qiushi215@163.com)
Source title:International Journal of Pattern Recognition and Artificial Intelligence
Abbreviated source title:Int J Pattern Recognit Artif Intell
Volume:35
Issue:2
Issue date:February 2021
Publication year:2021
Article number:2150004
Language:English
ISSN:02180014
CODEN:IJPIEI
Document type:Journal article (JA)
Publisher:World Scientific
Abstract:Recognition of small moving targets in space has become one of the frontier scientific researches in recent decade. Most of them focus on detection and recognition in star image with sidereal stare mode. However, in this research field, few researches are about detection and recognition in star image with track rate mode. In this paper, a novel approach is proposed to recognize the moving target in single frame by machine learning method based on elliptical characteristic extraction of star points. The technical path about recognition of moving target in space is redesigned instead of traditional processing approaches. Elliptical characteristics of each star point can be successfully extracted from single image. Machine learning can achieve the classification goal in order to make sure that all moving targets can be extracted. The experiments show that our proposed approach can have better performance in star images with different qualities.<br/> &copy; 2021 World Scientific Publishing Company.
Number of references:47
Main heading:Stars
Controlled terms:Machine learning - Image processing
Uncontrolled terms:Characteristic extraction - Machine learning methods - Moving targets - Research fields - Scientific researches - Single frames - Small moving target - Traditional processing
Classification code:657.2  Extraterrestrial Physics and Stellar Phenomena - 723.2  Data Processing and Image Processing - 723.4  Artificial Intelligence
DOI:10.1142/S021800142150004X
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 201>
 
Accession number:20212010361090
Title:Orthogonally polarized RF optical single sideband generation with integrated ring resonators
Authors:Tan, Mengxi (1); Xu, Xingyuan (2); Wu, Jiayang (1); Nguyen, Thach G. (3); Chu, Sai T. (4); Little, Brent E. (5); Mitchell, Arnan (3); Morandotti, Roberto (6, 7); Moss, David J. (1) 
Author affiliation:(1) Optical Sciences Centre, Swinburne University of Technology, Hawthorn; VIC; 3122, Australia; (2) Electro-Photonics Laboratory, Department of Electrical and Computer Systems Engineering, Monash University, VIC; 3800, Australia; (3) School of Engineering, RMIT University, Melbourne; VIC; 3001, Australia; (4) Department of Physics, City University of Hong Kong, Hong Kong, Hong Kong; (5) State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (6) INRS &#1023; Energie, Mat&eacute;riaux et T&eacute;l&eacute;communications, 1650 Boulevard Lionel-Boulet, Varennes; QC; J3X 1S2, Canada; (7) Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu; 610054, China 
Corresponding author:Moss, David J.(dmoss@swin.edu.au)
Source title:Journal of Semiconductors
Abbreviated source title:J. Semicond.
Volume:42
Issue:4
Issue date:April 2021
Publication year:2021
Article number:041305
Language:English
ISSN:16744926
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">We review recent work on narrowband orthogonally polarized optical RF single sideband generators as well as dual-channel equalization, both based on high-Q integrated ring resonators. The devices operate in the optical telecommunications C-band and enable RF operation over a range of either fixed or thermally tuneable frequencies. They operate via TE/TM mode birefringence in the resonator. We achieve a very large dynamic tuning range of over 55 dB for both the optical carrier-to-sideband ratio and the dual-channel RF equalization for both the fixed and tunable devices.<br/></div> &copy; 2021 Chinese Institute of Electronics.
Number of references:87
Main heading:Microwave photonics
Controlled terms:Equalizers - Optical resonators - Microwave resonators
Uncontrolled terms:Dynamic tuning - Narrow bands - Optical carriers - Optical single side bands - Optical telecommunication - Ring resonator - Single side bands - Tunable device
Classification code:713.5  Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 714  Electronic Components and Tubes - 741.1  Light/Optics - 741.3  Optical Devices and Systems
Numerical data indexing:Decibel 5.50e+01dB
DOI:10.1088/1674-4926/42/4/041305
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 202>
 
Accession number:20210309771358
Title:Smart Optic Fiber Mattress for Animal Sleep Continuous Monitoring Based Multi-Modal Interferometer
Authors:Li, Yang (1); Dong, Bo (1); Zhao, Yudi (2); Chen, Enqing (2); Wang, Xiaoli (2); Zhao, Wei (1); Wang, Yishan (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, China; (2) University of Chinese Academy of Sciences, Beijing, China 
Corresponding author:Dong, Bo(bdong@opt.ac.cn)
Source title:Journal of Lightwave Technology
Abbreviated source title:J Lightwave Technol
Volume:39
Issue:12
Issue date:June 15, 2021
Publication year:2021
Pages:4131-4137
Article number:9314182
Language:English
ISSN:07338724
E-ISSN:15582213
CODEN:JLTEDG
Document type:Journal article (JA)
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">A smart optic fiber mattress for animal sleep continuous monitoring based on a multi-modal interferometer is presented. The sensor is fabricated by splicing two single mode fibers (SMFs) and a multimode fiber (MMF) with a grid structure. Due to the network structure of the sensor, it has wider contact surface for monitoring vital signs and reduces the detection difficulty caused by the change of measured object position. The sensing unit can be placed under the dog mattress. Experimental results show that it can continuously monitor the sleeping activities and respiration of the dog. The detected information includes activity rhythm, sleeping state and sleeping respiratory rates (SRR). This technique avoids some potential problems such as injuring caused by the sensor appendage and dispute caused by moral principles. It is qualified to be widely used in health care of pets and protection of wildlife.<br/></div> &copy; 1983-2012 IEEE.
Number of references:17
Main heading:Animals
Controlled terms:Single mode fibers - Multimode fibers - Sleep research - Interferometers
Uncontrolled terms:Contact surface - Continuous monitoring - Grid structures - Multi-mode fibers (MMF) - Network structures - Object positions - Potential problems - Respiratory rate
Classification code:461.4  Ergonomics and Human Factors Engineering - 741.1.2  Fiber Optics - 941.3  Optical Instruments
DOI:10.1109/JLT.2020.3048958
Funding details:  Number: Y829321213, Acronym: CAS, Sponsor: Chinese Academy of Sciences;
Funding text:Manuscript received October 10, 2020; revised November 26, 2020 and December 22, 2020; accepted December 28, 2020. Date of publication January 5, 2021; date of current version June 16, 2021. This work was supported by CAS Pioneer Hundred Talents Program Y829321213. (Corresponding author: Bo Dong.) Yang Li is with the State Key Laboratory of Transient Optics and Photonics, Xi&rsquo;an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi&rsquo;an 710119, China, and also with the University of Chinese Academy of Sciences, Beijing 100049, China (e-mail: liyang185@mails.ucas.ac.cn).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 203>
 
Accession number:20214711192834
Title:Improved Active Disturbance Rejection Control of optoelectronic stabilized platform Based on Reduced-order Extended State Observer
Authors:Gao, Peng (1, 2, 3); Su, Xiuqin (1); Wang, Weifeng (1); Zhang, Wenbo (1, 2, 3) 
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Gao, Peng(gppaper@163.com)
Source title:IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2021
Abbreviated source title:IEEE Inf. Technol., Netw., Electron. Autom. Control Conf., ITNEC
Part number:1 of 1
Issue title:IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2021
Issue date:October 15, 2021
Publication year:2021
Pages:889-894
Language:English
ISBN-13:9781665415989
Document type:Conference article (CA)
Conference name:5th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2021
Conference date:October 15, 2021  -  October 17, 2021
Conference location:Xi'an, China
Conference code:173516
Sponsor:Chengdu Union Institute of Science and Technology; Chongqing Geeks Education Technology Co., Ltd; Chongqing Global Union Academy of Science and Technology; Global Union Academy of Science and Technology; IEEE Beijing Section; Xi'an Peihua University
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">In order to improve the anti-disturbance ability and dynamic response characteristics of the optoelectronic stabilized platform, an improved linear active disturbance rejection control (ADRC) algorithm is proposed. The algorithm adopts reduced-order extended state observer (RESO) to realize fast tracking and estimating disturbances, which improves the restraining rapidity of disturbances. The Variable Speed Integral Proportional Integral (VSIPI) algorithm is introduced to solve the contradiction between transition speed and response overshoot, so as to obtain faster response speed and lower overshoot. The simulation results show that the algorithm has stronger anti-interference ability and robustness than the traditional PI.<br/></div> &copy; 2021 IEEE.
Number of references:15
Main heading:Two term control systems
Controlled terms:State estimation - Disturbance rejection
Uncontrolled terms:Active disturbances rejection controls - Dynamic response characteristics - Extended state observe - Extended state observer - Optical axis - Opto-electronic stabilized platforms - Reduced order - State observe - Variable speed - Variable speed integral
Classification code:731  Automatic Control Principles and Applications - 731.1  Control Systems
DOI:10.1109/ITNEC52019.2021.9587065
Funding details:  Number: E1553201, Acronym: CAS, Sponsor: Chinese Academy of Sciences;Number: -, Acronym: XIOPM, Sponsor: Xi'an Institute of Optics and Precision Mechanics;Number: -, Acronym: YIPA, Sponsor: Youth Innovation Promotion Association;
Funding text:This work was supported by Youth Innovation Promotion Association, XIOPM, CAS (grant number E1553201).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 204>
 
Accession number:20220911706704
Title:An Improved Method of Friction Compensation and Stability Control for Optoelectronic Stabilized Platform
Authors:Gao, Peng (1, 2, 3); Lu, Weiguo (1); Zhang, Wenbo (1, 2, 3) 
Author affiliation:(1) Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Gao, Peng(gaopeng1@opt.ac.cn)
Source title:2021 IEEE Conference on Telecommunications, Optics and Computer Science, TOCS 2021
Abbreviated source title:IEEE Conf. Telecommun., Opt. Comput. Sci., TOCS
Part number:1 of 1
Issue title:2021 IEEE Conference on Telecommunications, Optics and Computer Science, TOCS 2021
Issue date:2021
Publication year:2021
Pages:424-427
Language:English
ISBN-13:9781665424981
Document type:Conference article (CA)
Conference name:2021 IEEE Conference on Telecommunications, Optics and Computer Science, TOCS 2021
Conference date:December 10, 2021  -  December 11, 2021
Conference location:Shenyang, China
Conference code:176697
Publisher:Institute of Electrical and Electronics Engineers Inc.
Abstract:<div data-language="eng" data-ev-field="abstract">In order to improve the anti-disturbance ability of the optoelectronic stabilized platform, an improved active disturbance rejection control algorithm is proposed, which combines LuGre friction model and linear reduced extended state observer. Firstly, LuGre friction model is established to compensate the friction torque of bearing. Then, the friction compensation error and other disturbances are regarded as an extended state, which is estimated by a linear reduced-order extended state observer. The estimated value is fed back to the controller to further compensate the disturbance. The improved ADRC algorithm has superior disturbance rejection ability taking advantage of the accurate compensation of LuGre model and the adaptation of extended state observation. Experimental results show that the improved algorithm can well suppress external interferences and significantly improve the ability of anti-interference and tracking response of the system.<br/></div> &copy; 2021 IEEE.
Number of references:13
Main heading:Error compensation
Controlled terms:Disturbance rejection - State estimation
Uncontrolled terms:Active disturbances rejection controls - Compensation control - Extended state observer - Friction compensation - Linear reduced extended state observe - LuGre friction model - LuGre model - Opto-electronic stabilized platforms - Stability control - State observe
Classification code:731  Automatic Control Principles and Applications - 731.1  Control Systems
DOI:10.1109/TOCS53301.2021.9688889
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 205>
 
Accession number:20212010359826
Title:Hyperspectral Anomaly Detection Based on 3D Convolutional Autoencoder and Low Rank Representation
Title of translation:&#22522;&#20110;3D&#21367;&#31215;&#33258;&#32534;&#35299;&#30721;&#22120;&#21644;&#20302;&#31209;&#34920;&#31034;&#30340;&#39640;&#20809;&#35889;&#24322;&#24120;&#26816;&#27979;
Authors:Sun, Bangyong (1, 2); Zhao, Zhe (1); Hu, Bingliang (2); Yu, Tao (2) 
Author affiliation:(1) College of Printing, Packaging and Digital Media, Xi'an University of Technology, Xi'an; 710048, China; (2) Key Laboratory of Spectral Imaging Technology CAS, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Yu, Tao(yutao@opt.ac.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:4
Issue date:April 25, 2021
Publication year:2021
Article number:0410003
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">Due to the challenge of high dimensionality, insufficient utilization of spatial-spectral information and limited local structure property expression in hyperspectral images, a hyperspectral anomaly detection algorithm based on 3D convolutional autoencoder and low rank representation is proposed in this paper. Firstly, the spectral-spatial features of hyperspectral images are extracted by 3D convolutional autoencoder. In order to precisely represent the local similarity, a new loss function is proposed to constrain the central pixel and it's surrounding pixels to extract more discriminative features. And then, the Density Based Spatial Clustering of Applications with Noise (DBSCAN) algorithm is used to construct the background dictionary, and the abnormal region is separated by low rank representation on the feature map. Finally, the detection result is obtained by fusing the reconstruction error obtained by 3D convolution autoencoder and abnormal region detection result. We carry out objective and subjective anomaly detection experiments on two real hyperspectral datasets. The results demonstrate that the proposed algorithm detect abnormal targets more accurately compared with other algorithms.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:32
Main heading:Convolution
Controlled terms:Learning systems - Spectroscopy - Clustering algorithms - Anomaly detection - Pixels
Uncontrolled terms:Density-based spatial clustering of applications with noise - Detection experiments - Discriminative features - High dimensionality - Hyperspectral anomaly detection - Low-rank representations - Reconstruction error - Spectral information
Classification code:716.1  Information Theory and Signal Processing - 903.1  Information Sources and Analysis
DOI:10.3788/gzxb20215004.0410003
Funding details:  Number: 62076199, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: 2019M653784, Acronym: -, Sponsor: China Postdoctoral Science Foundation;Number: -, Acronym: -, Sponsor: National Defense Science and Technology Innovation Fund of the Chinese Academy of Sciences;
Funding text:Foundation item&#65306;National Natural Science Foundation of China&#65288;No.62076199&#65289;&#65292;National Defense Science and Technology Innovation Special Zone Project&#65288;No.XXX-ZT-00X-014-01&#65289;&#65292;China Postdoctoral Science Foundation&#65288;No. 2019M653784&#65289;&#65292;Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences&#65288;No.LSIT201801D&#65289;National Natural Science Foundation of China (No.62076199), National Defense Science and Technology Innovation Special Zone Project (No.XXX-ZT-00X-014-01), China Postdoctoral Science Foundation (No. 2019M653784), Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences (No.LSIT201801D).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 206>
 
Accession number:20211310141478
Title:Frontiers in science and applications for attosecond light source    (Open Access)
Title of translation:&#38463;&#31186;&#20809;&#28304;&#21069;&#27839;&#31185;&#23398;&#19982;&#24212;&#29992;    (Open Access)
Authors:Fu, Yuxi (1, 2) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Optoelectronics, University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding author:Fu, Yuxi(fuyuxi@opt.ac.cn)
Source title:Kexue Tongbao/Chinese Science Bulletin
Abbreviated source title:Kexue Tongbao/Chin. Sc. Bull.
Volume:66
Issue:8
Issue date:March 15, 2021
Publication year:2021
Pages:833-834
Language:Chinese
ISSN:0023074X
E-ISSN:20959419
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Number of references:14
DOI:10.1360/TB-2020-1672
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
Open Access type(s): All Open Access, Bronze
 
<RECORD 207>
 
Accession number:20215011321430
Title:Fiber-coupled Chromatic Confocal 3D Measurement System and Comparative Study of Spectral Data Processing Algorithms
Title of translation:&#20809;&#32420;&#24335;&#33394;&#25955;&#20849;&#28966;&#19977;&#32500;&#27979;&#37327;&#31995;&#32479;&#21450;&#31639;&#27861;&#27604;&#36739;&#30740;&#31350;
Authors:Wang, Jiayi (1); Liu, Tao (1); Tang, Xiaofeng (1); Hu, Jiaqi (1); Wang, Xing (2); Li, Guoqing (1); He, Tao (1); Yang, Shuming (1) 
Author affiliation:(1) State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (2) Key Laboratory of Ultra&Hscr;fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding author:Liu, Tao(liu8483@xjtu.edu.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:11
Issue date:November 25, 2021
Publication year:2021
Article number:1112001
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">A simple aspheric chromatic dispersion lens group of low cost is designed using Zemax, and an integrated fiber-coupled chromatic confocal 3D measurement system is developed. Performances of four peak wavelength extraction methods, i.e. the maximum method, centroid method, Gaussian fitting method and spline interpolation method, have been compared and analyzed quantitatively. In addition, calibration accuracy of Gaussian fitting method and spline interpolation method is tested and compared through the axial resolution and displacement measurement experiments. The experimental results show that the axial measurement range of the built system is 1 mm. The Gaussian fitting method has higher accuracy and better stability among the four peak extraction algorithms. The axial resolution of the system using Gaussian fitting based and spline interpolation based calibration methods can both reach 0.2 &mu;m and the displacement measurement accuracy is better than 1% within the whole measurement range; a quartz glass with a thickness of 0.219 mm is measured, and the relative measurement error of the average value is 0.5%. Finally, the developed system is applied to the 3D surface measurement of a step structure, a flexible electrode and a MEMS unit, and the experimental results indicate that the proposed system can perform high-precision 3D measurements of complex microstructures and transparent material thicknesses.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:25
Main heading:Calibration
Controlled terms:Chromatic dispersion - Interpolation - Surface measurement - Displacement measurement - Gaussian distribution - Gaussian noise (electronic) - Extraction
Uncontrolled terms:3-D measurement - 3-D measurement systems - Chromatic confocal - Fiber coupled - Film-thickness - Fitting method - Gaussian fitting - Interpolation method - Spectral dispersions - Spline interpolation
Classification code:711.1  Electromagnetic Waves in Different Media - 802.3  Chemical Operations - 921.6  Numerical Methods - 922.1  Probability Theory - 922.2  Mathematical Statistics - 943.2  Mechanical Variables Measurements
Numerical data indexing:Percentage 1.00E00%, Percentage 5.00E-01%, Size 1.00E-03m, Size 2.00E-07m, Size 2.19E-04m
DOI:10.3788/gzxb20215011.1112001
Funding details:  Number: 2020ZDLGY04-02, Acronym: -, Sponsor: Shanxi Provincial Key Research and Development Project;
Funding text:Key Research and Development Program of Shaanxi Province (Nos.2021ZDLGY12-06, 2020ZDLGY04-02), Science and Technology Innovation Group of Shaanxi Province (No.2019TD-011)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 208>
 
Accession number:20210509874581
Title:Research of robotic spherical polishing end effector based on finite element simulation
Authors:Mu, Ruixin (1, 2); Zhang, Jian (2, 3) 
Author affiliation:(1) Xi'an Institute of Optical and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (2) University of Chinese Academy of Science, Beijing; 100049, China; (3) School of Mechanoelectronic Engineering, Xidian University, Xi'an; 710071, China 
Corresponding author:Zhang, Jian(zj@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117611R
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:In this paper, using Preston hypothesis and CCOS removal model, analyzing removal function of the spherical polishing end is analyzed as Gaussian distribution, four schemes are proposed to design the robot optical spherical polishing end effector. Through the analysis and comparison of advantages and disadvantages, an optimal solution is obtained and a standardized design is carried out to realize the synthesis of revolution and rotation of the spherical polishing wheel. The design of the spherical polishing tool adopts bevel gear transmission, belt transmission and planetary gear structure. When the motor input is 200r/min, by adjusting the specifications of the pulley, the spherical polishing wheel can achieve a revolution speed of 60r/min and a rotation speed of 100&sim;400r/min. After the design is completed, finite element analysis is performed on the important parts of the structure, and the designed structure meets the strength requirements.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:15
Main heading:Finite element method
Controlled terms:Wheels - Industrial research - Machine design - Structural design - Bevel gears - Polishing - Spheres - End effectors
Uncontrolled terms:Belt transmissions - Finite element simulations - Gear transmissions - Optimal solutions - Polishing wheels - Removal function - Revolution and rotations - Revolution speed
Classification code:408.1  Structural Design, General - 601  Mechanical Design - 601.2  Machine Components - 604.2  Machining Operations - 731.5  Robotics - 901.3  Engineering Research - 912.1  Industrial Engineering - 921.6  Numerical Methods
Numerical data indexing:Rotational_Speed 2.00e+02RPM, Rotational_Speed 6.00e+01RPM
DOI:10.1117/12.2584956
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 209>
 
Accession number:20214811256426
Title:Classification of Pneumonia Images Based on Improved VGG19 Convolutional Neural Network (Invited)
Title of translation:&#22522;&#20110;&#25913;&#36827;VGG19&#21367;&#31215;&#31070;&#32463;&#32593;&#32476;&#30340;&#32954;&#28814;&#22270;&#20687;&#20998;&#31867;(&#29305;&#36992;)
Authors:Xiong, Feng (1); He, Di (1); Liu, Yujie (1); Qi, Meijie (1); Gao, Peng (1); Zhang, Zhoufeng (2); Liu, Lixin (1, 2) 
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) CAS Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China 
Corresponding authors:Liu, Lixin(lxliu@xidian.edu.cn); Liu, Lixin(lxliu@xidian.edu.cn)
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:10
Issue date:October 25, 2021
Publication year:2021
Article number:1010001
Language:English
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">In this paper, two improved network models, SVM (Linear)-based VGG19 and XGBoost-based VGG19, are constructed by combining the VGG19 convolutional neural network with two machine learning algorithms. Moreover, the VGG19 model and the two improved models are employed to classify bacterial pneumonia and viral pneumonia images. Additionally, the performances of the three models are evaluated and compared, the results show that the average accuracies of the three models are all above 85.9%. The improved VGG19 models show superior stability in accuracy over conventional VGG19 model, and the comprehensive performance of XGBoost-based VGG19 model is best, which verifies the effectiveness of deep learning models combined with machine learning models.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:18
Main heading:Support vector machines
Controlled terms:Image enhancement - Adaptive boosting - Deep learning - Learning systems - Image classification - Convolution - Convolutional neural networks
Uncontrolled terms:Convolution neural network - Convolutional neural network - Deep learning - Extreme gradient boosting - Gradient boosting - Images classification - Pneumonia image classification - Support vectors machine - Three models - VGG19
Classification code:461.4  Ergonomics and Human Factors Engineering - 716.1  Information Theory and Signal Processing - 723  Computer Software, Data Handling and Applications - 723.2  Data Processing and Image Processing
Numerical data indexing:Percentage 8.59E+01%
DOI:10.3788/gzxb20215010.1010001
Funding details:  Number: LSIT202005W, Acronym: -, Sponsor: -;Number: 62075177, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: B17035, Acronym: -, Sponsor: Higher Education Discipline Innovation Project;
Funding text:National Natural Science Foundation of China (No. 62075177), the Open Research Fund of CAS Key Laboratory of Spectral Imaging Technology (No. LSIT202005W), the 111 Project (No. B17035)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 210>
 
Accession number:20212710587204
Title:Digital micromirror device based ptychographic phase microscopy
Authors:Zheng, Juanjuan (1, 2, 3); Wen, Kai (1); Gao, Zhaolin (1); Zalevsky, Zeev (4); Gao, Peng (1) 
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Xidian University, Xi'an; 710071, China; (2) Academy of Advanced Interdisciplinary Research, Xidian University, Xi'an; 710071, China; (3) State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China; (4) Bar-Ilan University, Faculty of Engineering and Nano Technology Center, Ramat-Gan, Israel 
Corresponding author:Gao, Peng(peng.gao@xidian.edu.cn)
Source title:Optics Communications
Abbreviated source title:Opt Commun
Volume:498
Issue date:November 1, 2021
Publication year:2021
Article number:127218
Language:English
ISSN:00304018
CODEN:OPCOB8
Document type:Journal article (JA)
Publisher:Elsevier B.V.
Abstract:<div data-language="eng" data-ev-field="abstract">In this paper, ptychographic phase microscopy (PPM) with digital illumination addressing via a digital micromirror device (DMD) was demonstrated. A moving circular pattern is sequentially lighted up by a DMD and projected on the sample for illumination stepping, and a CCD camera records the generated diffraction patterns. Then, the quantitative phase distribution of the sample can be reconstructed from the diffraction patterns by using an iterative algorithm. Compared with conventional PPM approaches, this method has a fundamentally enhanced imaging speed due to the usage of the digital scan to replace the conventional mechanical scan. Furthermore, parallelized illumination strategy, which loads multiple pupils to DMD simultaneously, is used to further improve the imaging speed to 0.8 s per phase image. We envisage that this method will contribute to high-contrast, quantitative phase imaging of transparent samples without labeling.<br/></div> &copy; 2021 Elsevier B.V.
Number of references:35
Main heading:Diffraction patterns
Controlled terms:Image enhancement - CCD cameras - Interferometry - Iterative methods
Uncontrolled terms:Circular pattern - Digital micromirror device - Digital scans - Imaging speed - Iterative algorithm - Phase distribution - Ptychographic phase microscopy - Ptychography - Quantitative phase microscopy
Classification code:714.2  Semiconductor Devices and Integrated Circuits - 742.2  Photographic Equipment - 921.6  Numerical Methods - 941.4  Optical Variables Measurements
Numerical data indexing:Time 8.00E-01s
DOI:10.1016/j.optcom.2021.127218
Funding details:  Number: -, Acronym: SKLTOP, Sponsor: State Key Laboratory of Transient Optics and Photonics;Number: 2020JK-193, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: 2020JQ-324, Acronym: -, Sponsor: Natural Science Foundation of Shaanxi Province;Number: JB210513, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;Number: JC2112, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;Number: NSFC 62075177, Acronym: NSFC, Sponsor: National Natural Science Foundation of China;Number: XJS210504, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;Number: XJS210504, Acronym: -, Sponsor: Fundamental Research Funds for the Central Universities;
Funding text:National Natural Science Foundation of China (NSFC 62075177); Shaanxi Natural Science Foundation of Shaanxi Province, China (2020JK-193, 2020JQ-324); the Fundamental Research Funds for the Central Universities (JB210513, JC2112, XJS210504 and XJS210504); Key Laboratory of Image Processing and Pattern Recognition, China, Jiangxi Province (ET202080417); Research Fund of State Key Laboratory of Transient Optics and Photonics, China.
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 211>
 
Accession number:20211310141835
Title:Development and prospect on driving laser for attosecond pulse
Title of translation:&#38463;&#31186;&#33033;&#20914;&#39537;&#21160;&#28608;&#20809;&#21457;&#23637;&#29616;&#29366;&#21450;&#23637;&#26395;
Authors:Yuan, Hao (1, 2); Cao, Huabao (1); Wang, Hushan (1); Liu, Xin (1, 2); Sun, Xianwei (1); Wang, Yishan (1); Zhao, Wei (1); Fu, Yuxi (1) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) School of Future Technology, University of Chinese Academy of Sciences, Beijing; 100049, China 
Corresponding authors:Wang, Yishan(yswang@opt.ac.cn); Zhao, Wei(weiz@opt.ac.cn); Fu, Yuxi(fuyuxi@opt.ac.cn)
Source title:Kexue Tongbao/Chinese Science Bulletin
Abbreviated source title:Kexue Tongbao/Chin. Sc. Bull.
Volume:66
Issue:8
Issue date:March 15, 2021
Publication year:2021
Pages:878-888
Language:Chinese
ISSN:0023074X
E-ISSN:20959419
Document type:Journal article (JA)
Publisher:Chinese Academy of Sciences
Abstract:Attosecond light source is a new type of light source that was born at the beginning of the 21st century, which has a short pulse, broad spectrum, high temporal and spatial coherence and wide tunability, thus being widely employed in various research fieds. From ultrafast motion of electrons in atoms to charge transfer in biological macromolecules, attosecond pulses is currently the only tool that can track and capture these ultrafast dynamics. Attosecond pulse enables us to investigate ultrafast dynamics of micro-world both in nanometer and attosecond scales. However, the mechanism of attosecond pulse generation is completely different from general ultrafast lasers. Instead, attosecond pulse is generated by a highly nonlinear interaction between strong ultrafast femtosecond laser and matter, which is called high-order harmonic generation (HHG). The mechanism of HHG can be understood by a classical three step model. First, an electron is ionized from an atom by a strong laser electric field through tunnel ionization. Then the free electron is accelerated by the laser field and gains energy. Finally, the electron recombines with the parent ion when the laser field changes its sign with emission of a photon, whose energy equals its kinetic energy gained in the laser field plus ionization potential of the atom. Apparently, HHG is strongly affected by the laser waveform. Several key parameters of driving laser, such as wavelength, intensity, and carrier envelope phase strongly affect the process of HHG. Thus, the characteristics of attosecond pulses are determined by the driving laser. The rapid development of attosecond pulse technology strongly depends on the development of driving laser technology. In the beginning, chirped pulse amplification (CPA) technology greatly promoted the development of attosecond light sources. The femtosecond CPA systems based on Ti: sapphire crystal has been the main driving laser to generate attosecond light pulses. The driving laser wavelength is in the near infrared region near 800 nm, which generally has a pulse duration of multiple optical cycles. By employing post-compression technology to shorten pulse durations of CPA systems to few-cycle, isolated attosecond pulses in the extreme ultraviolet (XUV) can be generated, which is called the first generation of attosecond light source. Recently, optical parametric amplification (OPA) systems have been widely used as driving laser due to its flexible wavelength tunability. Using OPA, longer driving laser wavelength up to the midinfrared (MIR) can be obtained, which pushes the attosecond pulses to the soft X-ray region, and has been called the second generation of attosecond light sources. Due to broad spectrum and higher photon energy, attosecond pulses have a shorter duration in the soft X-ray region compared with XUV region, given that the temporal chirp is properly compensated. In 2017, reseachers generated soft X-ray isolated attosecond pulses, which was driven by mid-infrared pulses centered at 1.8 &micro;m. These attosecond pulses, whose duration reaches 53 as and spectrum surpasses carbon K-edge, provide a tool for studying the ultrafast dynamics of diamond, graphene and other carbon materials. In this paper, we start with the principle of attosecond pulses generation based on HHG. Then, we introduce different technologies and their development for obtaining driving laser pulses for HHG. Finally, we introduce prospect on development of driving laser pulses for attosecond pulses generation.<br/> &copy; 2021, Science Press. All right reserved.
Number of references:80
Main heading:Electrons
Controlled terms:Atoms - Kinetic energy - Kinetics - Electromagnetic pulse - Multiphoton processes - Optical parametric amplifiers - Photoionization - Electric fields - Nonlinear optics - Charge transfer  - Atom lasers - Parametric amplifiers - Infrared devices - Ultrashort pulses - Ionization potential - Sapphire
Uncontrolled terms:Attosecond light pulse - Attosecond pulse generation - Biological macromolecule - Carrier-envelope phase - Chirped pulse amplifications - High order harmonic generation - Isolated attosecond pulse - Optical parametric amplification
Classification code:482.2.1  Gems - 631.1  Fluid Flow, General - 701  Electricity and Magnetism - 701.1  Electricity: Basic Concepts and Phenomena - 713.1  Amplifiers - 714  Electronic Components and Tubes - 741.1.1  Nonlinear Optics - 744.1  Lasers, General - 801.4  Physical Chemistry - 802.2  Chemical Reactions - 931  Classical Physics; Quantum Theory; Relativity - 931.3  Atomic and Molecular Physics
Numerical data indexing:Size 8.00e-07m
DOI:10.1360/TB-2020-0594
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 212>
 
Accession number:20211910318384
Title:Modeling of high-speed laser photography system for field projectile testing
Authors:Sun, Ce (1); Jia, Yangyu (2); Wang, Danni (3) 
Author affiliation:(1) Laboratory of Precision Physical Quantity Measurement, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China; (2) Xi'an Modern Control Technology Research Institute, Xi'an; Shaanxi; 710065, China; (3) Changchun University of Science and Technology, China 
Corresponding author:Sun, Ce(sunce@opt.ac.cn)
Source title:Optik
Abbreviated source title:Optik
Volume:241
Issue date:September 2021
Publication year:2021
Article number:166980
Language:English
ISSN:00304026
Document type:Journal article (JA)
Publisher:Elsevier GmbH
Abstract:<div data-language="eng" data-ev-field="abstract">Field projectile testing plays a crucial role in national defense. Laser high-speed photography records transient processes with high temporal and spatial resolution and is an effective diagnostic method for range testing. In this study, a laser high-speed photography model is established from detailed aspects, including laser pulse energy for reflective imaging, accurate synchronization of pulse train and shutter signal, minimum exposure time and shooting frequency for targets with different velocities, and magnification correction used in the image measurement. Shooting experiments conducted in Nanshan Test center verify the correctness of the theoretical analysis and parameter selection. The models and methods described in this article can be a guidance for field testing.<br/></div> &copy; 2021 Elsevier GmbH
Number of references:17
Main heading:High speed photography
Controlled terms:Projectiles
Uncontrolled terms:Field testing - High spatial resolution - High speed laser - High temporal resolution - Highspeed photography - Illumination energy - Laser high-speed photography - Magnification correction - National defence - Transient process
Classification code:742.1  Photography
DOI:10.1016/j.ijleo.2021.166980
Funding details:  Number: 2020JQ-438, Acronym: -, Sponsor: Natural Science Basic Research Program of Shaanxi Province;
Funding text:This wok was supported by the Natural Science Basic Research Program of Shaanxi Province (No. 2020JQ-438 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 213>
 
Accession number:20210509874589
Title:Testing of annular hyperboloid mirror for Cassegrain system
Authors:Hao, Sanfeng (1, 2); Zhang, Jian (2, 3); An, Fei (2); Yang, Jianfeng (2) 
Author affiliation:(1) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710119, China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) School of Mechanoelectronic Engineering, Xidian University, Xi'an; 710071, China 
Corresponding author:Zhang, Jian(zj@opt.ac.cn)
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:11761
Part number:1 of 1
Issue title:Fourth International Conference on Photonics and Optical Engineering
Issue date:2021
Publication year:2021
Article number:117611Z
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510643574
Document type:Conference article (CA)
Conference name:4th International Conference on Photonics and Optical Engineering
Conference date:October 15, 2020  -  October 16, 2020
Conference location:Xi'an, China
Conference code:166676
Sponsor:Chinese Optical Society; High-speed Photography and Photonics Committee of Chinese Optical Society; Optics and Photonics Society of Singapore; Shaanxi Optical Society; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Publisher:SPIE
Abstract:This paper introduces the testing of annular hyperboloid mirror with 460mm diameter in the Cassegrain system. To improve the testing efficiency and meet the requirements of utilization, the study is carried out from three stages: precision grinding, precision polishing, and optical coating. In the precision grinding stage, the annular Zernike polynomial is used to fit the measured surface combining with the data measured from the coordinate measuring machine, so that it can facilitate the testing of the distribution of the surface shape deviation over the entire surface. During the precision polishing stage, a feasible Offner compensator is designed to achieve the goal of high-precision testing of the hyperboloid surface, with a measurement accuracy of RMS&le;0.02&lambda;. Also, 0.5-0.7&mu;m and 3-5&mu;m dual-band high reflectivity and high uniformity reflective coating is designed for the Cassegrain system requirements, the actual test reflectivity is 96.2%, which can meet the design requirements.<br/> &copy; COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
Number of references:15
Main heading:Mirrors
Controlled terms:Grinding (machining) - Aspherics - Optical testing - Polishing - Optical coatings - Reflective coatings - Reflection
Uncontrolled terms:High reflectivity - Hyperboloid mirrors - Measurement accuracy - Precision grinding - Precision polishing - System requirements - Testing efficiency - Zernike polynomials
Classification code:604.2  Machining Operations - 741.1  Light/Optics - 741.3  Optical Devices and Systems - 813.2  Coating Materials
Numerical data indexing:Percentage 9.62e+01%, Size 3.00e-06m to 5.00e-06m, Size 4.60e-01m, Size 5.00e-07m to 7.00e-07m
DOI:10.1117/12.2585089
Funding details:  Number: 2018ZDXM-GY-105, Acronym: -, Sponsor: Key Research and Development Program of Hunan Province of China;
Funding text:This work is funded by the CAS "Light of West China" Program (Grant No. XAB2016A10), key program of research and development of Shanxi Province of China (Grant No. 2018ZDXM-GY-105).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 214>
 
Accession number:20213110707126
Title:Design of Spatial Resolution PDV Probe Based on Double Telecentric Lens
Title of translation:&#22522;&#20110;&#21452;&#36828;&#24515;&#38236;&#22836;&#30340;&#31354;&#38388;&#20998;&#36776;PDV&#25506;&#22836;&#30740;&#21046;
Authors:Yang, Jun (1, 2, 3); Yan, Yadong (1); Li, Qi (1); Shi, Guokai (3); Wang, Zhao (3); Zhang, Yang (3); Zhang, Suoqi (3); He, Junhua (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; (3) Laboratory of Intense Dynamic Loading and Effect, Xi'an; 710024, China 
Source title:Guangzi Xuebao/Acta Photonica Sinica
Abbreviated source title:Guangzi Xuebao
Volume:50
Issue:7
Issue date:July 25, 2021
Publication year:2021
Article number:0712002
Language:Chinese
ISSN:10044213
CODEN:GUXUED
Document type:Journal article (JA)
Publisher:Chinese Optical Society
Abstract:<div data-language="eng" data-ev-field="abstract">In order to simultaneously measure the multi-point velocity of a plane target in the range of 5 mm in material dynamics experiments or structural response research, a laser transmitting and receiving probe with spatial resolution for photonic Doppler velocimetry is developed based on the dense fiber array and double telecentric lens. The optical design and structural design are described, and the installation and testing of the probe are performed. The test results of output spot characteristics show that the vertical axis magnification of the probe is consistent with the design value. The minimum diameter of the spot at the focusing position is 109 &mu;m and the maximum is 202 &mu;m. The test results of the receiving efficiency of the probe to the diffuse reflection target show that each fiber in the probe is not crosstalk, and the receiving efficiency of the fiber near the center is large, while that of the two sides is small.<br/></div> &copy; 2021, Science Press. All right reserved.
Number of references:20
Main heading:Velocity measurement
Controlled terms:Doppler effect - Efficiency - Image resolution - Probes - Optical design
Uncontrolled terms:Design value - Diffuse reflection targets - Minimum diameters - Multi-point velocity - Photonic doppler velocimetry - Spatial resolution - Structural response - Vertical axis
Classification code:741.1  Light/Optics - 913.1  Production Engineering - 943.3  Special Purpose Instruments
Numerical data indexing:Size 1.09e-04m, Size 2.02e-04m, Size 5.00e-03m
DOI:10.3788/gzxb20215007.0712002
Funding details:  Number: 2017YFA0403300, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:National Key Research and Development Program of China (No. 2017YFA0403300)
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 215>
 
Accession number:20213410799009
Title:Broad-band phase retrieval method for transient radial shearing interference using chirp Z transform technique
Authors:Xue, Fang (1, 2); Duan, Ya-Xuan (1); Chen, Xiao-Yi (1, 2); Li, Ming (1, 2); Yuan, Suo-Chao (1, 2); Da, Zheng-Shang (1) 
Author affiliation:(1) Advanced Optical Instrument Research Department, 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:Duan, Ya-Xuan(duanyaxuan@opt.ac.cn)
Source title:Chinese Physics B
Abbreviated source title:Chin. Phys.
Volume:30
Issue:8
Issue date:July 2021
Publication year:2021
Article number:084209
Language:English
ISSN:16741056
E-ISSN:20583834
Document type:Journal article (JA)
Publisher:IOP Publishing Ltd
Abstract:<div data-language="eng" data-ev-field="abstract">The transient radial shearing interferometry technique based on fast Fourier transform (FFT) provides a means for the measurement of the wavefront phase of transient light field. However, which factors affect the spatial bandwidth of the wavefront phase measurement of this technology and how to achieve high-precision measurement of the broad-band transient wavefront phase are problems that need to be studied further. To this end, a theoretical model of phase-retrieved bandwidth of radial shearing interferometry is established in this paper. The influence of the spatial carrier frequency and the calculation window on phase-retrieved bandwidth is analyzed, and the optimal carrier frequency and calculation window are obtained. On this basis, a broad-band transient radial shearing interference phase-retrieval method based on chirp Z transform (CZT) is proposed, and the corresponding algorithm is given. Through theoretical simulation, a known phase is used to generate the interferogram and it is retrieved by the traditional method and the proposed method respectively. The residual wavefront RMS of the traditional method is 0.146&lambda;, and it is 0.037&lambda; for the proposed method, which manifests an improvement of accuracy by an order of magnitude. At the same time, different levels of signal-to-noise ratios (SNRs) from 50 dB to 10 dB of the interferogram are simulated, and the RMS of the residual wavefront is from 0.040&lambda; to 0.066&lambda;. In terms of experiments, an experimental verification device based on a phase-only spatial light modulator is built, and the known phase on the modulator is retrieved from the actual interferogram. The RMS of the residual wavefront retrieved through FFT is 0.112&lambda;, and it decreases to 0.035&lambda; through CZT. The experimental results verify the effectiveness of the method proposed in this paper. Furthermore, the method can be used in other types of spatial carrier frequency interference, such as lateral shearing interference, rotational shearing interference, flipping shearing interference, and four-wave shearing interference.<br/></div> &copy; 2021 Chinese Physical Society and IOP Publishing Ltd.
Number of references:22
Main heading:Wavefronts
Controlled terms:Fast Fourier transforms - Z transforms - Shearing - Interferometry - Bandwidth - Light modulators - Phase measurement - Signal to noise ratio
Uncontrolled terms:Chirp Z transform - Experimental verification - High-precision measurement - Lateral shearings - Shearing interference - Spatial light modulators - Theoretical modeling - Theoretical simulation
Classification code:604.1  Metal Cutting - 716.1  Information Theory and Signal Processing - 921.3  Mathematical Transformations - 941.4  Optical Variables Measurements - 942.2  Electric Variables Measurements
Numerical data indexing:Decibel 5.00e+01dB to 1.00e+01dB
DOI:10.1088/1674-1056/abff2f
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 216>
 
Accession number:20211010037996
Title:Fabrication and experimental characterization of precise high-efficiency 2D multi-mode fiber array coupler
Authors:Zhou, Xiaojun (1); Song, Aiguo (1); Kong, Depeng (2); Yu, Weixing (2) 
Author affiliation:(1) School of Instrument Science and Engineering, Southeast University, Nanjing; 210000, China; (2) Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; Shanxi Province; 710119, China 
Corresponding author:Song, Aiguo(a.g.song@seu.edu.cn)
Source title:Optical Fiber Technology
Abbreviated source title:Opt. Fiber Technol.
Volume:63
Issue date:May 2021
Publication year:2021
Article number:102488
Language:English
ISSN:10685200
CODEN:OFTEFV
Document type:Journal article (JA)
Publisher:Academic Press Inc.
Abstract:In this paper a method for fabricating precise high-efficiency 2D multi-mode fiber array coupler is proposed, and the coupler's performance is experimentally characterized. By improving the design of 2D fiber array coupler, the average concentricity error of the fiber array is down to 0.9 &mu;m. After coupling with microlens array, the average coupling efficiency of the coupler is up to 57.51%. It is demonstrated that the precise microhole position and fiber cladding diameter, supported by microlens array, can provide an excellent coupling performance. This 2D fiber array coupler can be widely applied in LIDAR, optical communication systems and microwave photonics systems, provide the functions of high-speed image capture, interconnection and optical signals time-space transformation.<br/> &copy; 2021 Elsevier Inc.
Number of references:14
Main heading:Efficiency
Controlled terms:Fibers - Microlenses - Optical radar - Optical instrument lenses - Fabrication
Uncontrolled terms:Coupling efficiency - Coupling performance - Experimental characterization - Fiber claddings - High speed image - High-efficiency - Micro-lens arrays - Microwave Photonics
Classification code:716.2  Radar Systems and Equipment - 741.3  Optical Devices and Systems - 913.1  Production Engineering
Numerical data indexing:Percentage 5.75e+01%, Size 9.00e-07m
DOI:10.1016/j.yofte.2021.102488
Funding details:  Number: 2018YFB0504503, Acronym: NKRDPC, Sponsor: National Key Research and Development Program of China;
Funding text:This research has been supported by the China National Key Research and Development Project (Grant No. 2018YFB0504503 ).
 
Database:Compendex
Compilation and indexing terms, Copyright 2023 Elsevier Inc.
 
<RECORD 217>
 
Accession number:20210609884046
Title:Panoramic video motion small target detection algorithm in complex background
Title of translation:&#22797;&#26434;&#32972;&#26223;&#19979;&#20840;&#26223;&#35270;&#39057;&#36816;&#21160;&#23567;&#30446;&#26631;&#26816;&#27979;&#31639;&#27861;
Authors:Wang, Dian-Wei (1); Yang, Xu (1); Han, Peng-Fei (2); Liu, Ying (1); Xie, Yong-Jun (3); Song, Hai-Jun (3) 
Author affiliation:(1) School of Telecommunication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an; 710121, China; (2) Center for AI Research and Innovation, Westlake University, Hangzhou; 310024, China; (3) Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China 
Corresponding author:Yang, Xu(735583415@qq.com)
Source title:Kongzhi yu Juece/Control and Decision
Abbreviated source title:Kongzhi yu Juece Control Decis
Volume:36
Issue:1
Issue date:January 2021
Publication year:2021
Pages:249-256
Language:Chinese
ISSN:10010920
CODEN:KYJUEF
Document type:Journal article (JA)
Publisher:Northeast University
Abstract:In order to solve the problem of low detection accuracy of moving small targets in the panoramic video in complex background, a small target detection algorithm based on complex background motion is proposed. Firstly, to reduce the interference of complex background information and improve the accuracy of target detection, the fast robust principal component analysis (Fast RPCA) algorithm is used to separate the foreground background information of the panoramic video image, and the foreground information is extracted as an effective image feature. Then, the candidate frame size of the region proposal network (RPN) in the faster region-convolutional neural networks (Faster R-CNN) is improved to adapt to the target size in the panoramic image, and then the foreground feature map is trained. Finally, the convolutional layer output detection model is shared by the RPN n