Dr. Yu Zhou Profile

Dr. Yu Zhou

at Shanghai Institute of Optics and Fine Mechanics

SPIE Involvement:

Author

Publications (92)

Proceedings Article | 24 November 2023 Paper

Mitigation of the impact of Doppler shift on ranging accuracy

Chaoyang Li, Jianfeng Sun, Zhiyong Lu, Yu Zhou, Longkun Zhang, Weijie Ren, Yuxin Jiang, Lingling Xu, Hanrui Pan, Weibiao Chen, Hui He

Proceedings Volume 12935, 1293520 (2023) https://doi.org/10.1117/12.3007376

KEYWORDS: Ranging, Doppler effect, Interpolation, Distance measurement, Retroreflectors, Modulation, Velocity measurements, Electro optical modeling

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Proceedings Article | 9 September 2019 Paper

Research on resonance of fiber nutation

Peipei Hou, Jianfeng Sun, Yu Zhou, Zhiyong Lu, Qian Xu, Yueli Xi

Proceedings Volume 11123, 111230R (2019) https://doi.org/10.1117/12.2528957

KEYWORDS: Ceramics, Doppler effect, Optical fibers, Signal detection, Vibrometry, Light scattering, Calibration, Control systems, Laser scattering, Scattering

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SPIE Journal Paper | 28 January 2019 Open Access

2.5- and 5-Gbps time-delay self-homodyne interference differential phase-shift keying optical receiver for space-to-ground communication link

Yanan Zhi, Jianfeng Sun, Yu Zhou, Wei Lu, Enwen Dai, Weiqing Pan, Liren Liu

OE, Vol. 58, Issue 01, 016114, (January 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.1.016114

KEYWORDS: Receivers, Phase shift keying, Optical communications, Free space optics, Atmospheric turbulence, Satellites, Atmospheric optics, Adaptive optics, Wavefronts, Data communications

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SPIE Journal Paper | 12 December 2018

Large-aperture synthetic aperture imaging ladar

Yanan Zhi, Yu Zhou, Jianfeng Sun, Enwen Dai, Weiqing Pan, Kehan Tian, Liren Liu

OE, Vol. 57, Issue 12, 123102, (December 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.12.123102

KEYWORDS: Telescopes, Wavefronts, Heterodyning, Image resolution, Synthetic aperture imaging, LIDAR, Imaging systems, Sensors, Wavefront aberrations, Diffraction

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Proceedings Article | 14 November 2018 Paper

3D scanning coherent lidar demonstration using frequency modulated continuous wave

Wei Lu, Zhiyong Lu, Yu Zhou, Jiangfeng Sun, Qian Xu, Lijuan Wang, Yueli Xi

Proceedings Volume 10772, 1077215 (2018) https://doi.org/10.1117/12.2322141

KEYWORDS: LIDAR, 3D image processing, Modulation, Prisms, Doppler effect, Imaging systems, 3D acquisition, Image processing, Clouds, 3D scanning

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Proceedings Article | 18 September 2018 Paper

Performance of DPSK free-space optical communication with spatial diversity

Chenzhe Lao, Jianfeng Sun, Zhiyong Lu, Yu Zhou, Guo Zhang, Guangyuan Li, Bo Zhang, Mengmeng Xu, Hongyu He

Proceedings Volume 10770, 1077010 (2018) https://doi.org/10.1117/12.2319658

KEYWORDS: Satellites, Satellite communications, Optical communications, Atmospheric turbulence, Telecommunications, Receivers, Free space optical communications, Free space optics, Atmospheric optics, Fiber couplers

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Proceedings Article | 18 September 2018 Paper

3D coherent imaging ladar based on FMCW technology

Zhiyong Lu, Wei Lu, Yu Zhou, Jianfeng Sun, Zhu Luan, Peipei Hou, Qian Xu

Proceedings Volume 10772, 107720Z (2018) https://doi.org/10.1117/12.2321045

KEYWORDS: LIDAR, 3D image processing, 3D acquisition, Coherence imaging, Modulation, Heterodyning, Imaging systems, Signal detection, Target detection, Optical scanning

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Proceedings Article | 18 September 2018 Paper

Ghost image generated by relative movement of target and lidar platform in enhanced self-heterodyne SAIL

Guo Zhang, Jianfeng Sun, Yu Zhou, Zhiyong Lu

Proceedings Volume 10772, 107720X (2018) https://doi.org/10.1117/12.2319645

KEYWORDS: LIDAR, Image enhancement, Image processing, Signal detection, Transmitters, Receivers, Signal processing, Telescopes, Oscillators, Digital signal processing

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Proceedings Article | 6 September 2017 Paper

Imaging processing with bidirectional modulation in down-looking synthetic aperture imaging ladar

Zhiyong Lu, Yu Zhou, Jianfeng Sun, Zhu Luan, Lijuan Wang, Qian Xu, Liren Liu

Proceedings Volume 10410, 1041012 (2017) https://doi.org/10.1117/12.2272426

KEYWORDS: Modulation, Synthetic aperture imaging, LIDAR, Image processing, Remote sensing, Phase modulation, Signal to noise ratio

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Proceedings Article | 31 August 2017 Paper

Fine track system of space coherent optical communication without position detector

Hongyu He, Jianfeng Sun, Yu Zhou, Zhiyong Lu, Qian Xu, Guo Zhang, Guangyuan Li, Mengmeng Xu, Bo Zhang, Chenzhe Lao, Liren Liu

Proceedings Volume 10408, 1040816 (2017) https://doi.org/10.1117/12.2273138

KEYWORDS: Optical tracking, Astronomical imaging, Optical communications, Sensors, Signal detection, Telecommunications, Data communications, Aerospace engineering, Charge-coupled devices, CCD image sensors

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Proceedings Article | 31 August 2017 Paper

The integration of laser communication and ranging

Mengmeng Xu, Jianfeng Sun, Yu Zhou, Bo Zhang, Guo Zhang, Guangyuan Li, Hongyu He, Chenzhe Lao

Proceedings Volume 10408, 1040812 (2017) https://doi.org/10.1117/12.2271296

KEYWORDS: Ranging, Laser communications, Data communications, Clocks, Aerospace engineering, Computer programming, Receivers, Satellite communications, Laser applications, Data conversion

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Proceedings Article | 31 August 2017 Paper

Multiple wavelength spectral system simulating background light noise environment in satellite laser communications

Wei Lu, Jianfeng Sun, Peipei Hou, Qian Xu, Yueli Xi, Yu Zhou, Funan Zhu, Liren Liu

Proceedings Volume 10408, 1040818 (2017) https://doi.org/10.1117/12.2273269

KEYWORDS: Satellites, Optical simulations, Satellite communications, Laser communications, Free space optics, Telecommunications, Planets, Comets, Integration, Optical components

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Proceedings Article | 30 August 2017 Paper

Active polarization imaging system based on optical heterodyne balanced receiver

Qian Xu, Jianfeng Sun, Zhiyong Lu, Yu Zhou , Zhu Luan, Peipei Hou, liren Liu

Proceedings Volume 10407, 1040712 (2017) https://doi.org/10.1117/12.2272737

KEYWORDS: Polarization, Heterodyning, Imaging systems, Active optics, Receivers, Light, Optical imaging, Mueller matrices, Imaging technologies, Light sources

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Proceedings Article | 4 September 2015 Paper

Improvement of the signal-to-noise ratio in static-mode down-looking synthetic aperture imaging ladar

Zhiyong Lu, Jianfeng Sun, Ning Zhang, Yu Zhou, Guangyu Cai, Liren Liu

Proceedings Volume 9617, 96170K (2015) https://doi.org/10.1117/12.2185902

KEYWORDS: Signal to noise ratio, Synthetic aperture imaging, LIDAR, Image processing, Signal processing, Analog electronics, Receivers, Transmitters, Interference (communication), Sensors

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Proceedings Article | 4 September 2015 Paper

A balanced APD photodetection technology for large field of view coherent receiver

Guo Zhang, Yu Zhou, Jianfeng Sun, Baoliang Li, Liren Liu, Guang-Yu Cai

Proceedings Volume 9617, 96170M (2015) https://doi.org/10.1117/12.2186130

KEYWORDS: Avalanche photodetectors, Signal to noise ratio, Signal detection, Photodetectors, Sensors, Receivers, Interference (communication), Oscillators, Oscilloscopes, Picosecond phenomena

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Proceedings Article | 26 August 2015 Paper

3 x 3 free-space optical router based on crossbar network and its control algorithm

Peipei Hou, Jianfeng Sun, Zhou Yu, Wei Lu, Lijuan Wang, Liren Liu

Proceedings Volume 9586, 958610 (2015) https://doi.org/10.1117/12.2185433

KEYWORDS: Switches, Free space optics, Algorithm development, Crystals, Optical switching, Electro optics, Polarization, Laser crystals, Electrodes, Beam splitters

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Proceedings Article | 18 September 2014 Paper

Phase error suppression by low-pass filtering for synthetic aperture imaging ladar

Zhiwei Sun, Peipei Hou, Ya'nan Zhi, Jianfeng Sun, Yu Zhou, Qian Xu, Zhiyong Lu, Liren Liu

Proceedings Volume 9227, 92270F (2014) https://doi.org/10.1117/12.2060472

KEYWORDS: Linear filtering, Image filtering, Synthetic aperture radar, Optical filters, Fourier transforms, Synthetic aperture imaging, LIDAR, Image processing, Numerical simulations, Reconstruction algorithms

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Proceedings Article | 18 September 2014 Paper

Three-dimensional imaging using differential synthetic aperture interferometry

Ning Zhang, Yu Zhou, Jianfeng Sun, Ya'nan Zhi, Zhiyong Lu, Qian Xu, Zhiwei Sun, Liren Liu

Proceedings Volume 9227, 92270D (2014) https://doi.org/10.1117/12.2060470

KEYWORDS: Antennas, 3D image processing, Interferometry, Synthetic aperture radar, Interferometric synthetic aperture radar, 3D acquisition, Reflection, Wavefronts, Radar, Microwave radiation

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Proceedings Article | 18 September 2014 Paper

Speckle effect in a down-looking synthetic aperture imaging ladar

Qian Xu, Yu Zhou, Jianfeng Sun, Zhiyong Lu, Zhiwei Sun, Liren Liu

Proceedings Volume 9227, 92270E (2014) https://doi.org/10.1117/12.2060471

KEYWORDS: Speckle, Synthetic aperture imaging, LIDAR, Heterodyning, Image resolution, Image quality, Sun, Detection theory, Channel projecting optics

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Proceedings Article | 28 September 2013 Paper

Differential time delay line network for optical controlled beam forming

Jianfeng Sun, Lijuan Wang, Peipei Hou, Liren Liu, Ya'nan Zhi, Yu Zhou

Proceedings Volume 8843, 88430M (2013) https://doi.org/10.1117/12.2022990

KEYWORDS: Phased array optics, Radar, Free space optics, Radio optics, Phased arrays, Prisms, Picosecond phenomena, Free space, Optical networks, Polarization

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Proceedings Article | 25 September 2013 Paper

Flat optical lens by use of 90-degree volume holographic grating recording geometry and nonvolatile thermal fixing in LiNbO3:Fe crystal

Ya'nan Zhi, Zhifang Chai, Yongjian Zhu, Peipei Hou, Jianfeng Sun, Yu Zhou, Liren Liu

Proceedings Volume 8847, 88471I (2013) https://doi.org/10.1117/12.2025132

KEYWORDS: Holography, Volume holography, Diffraction gratings, Diffraction, Crystals, Free space optics, Spherical lenses, Holograms, Switching, Optical communications

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Proceedings Article | 25 September 2013 Paper

Optimization of high fixed diffraction efficiency in LiNbO3:Ce:Cu using optimal switching from recording to fixing

Peipei Hou, Ya‘nan Zhi, Jianfeng Sun, Yu Zhou, Lijuan Wang, Wei Lu, Liren Liu

Proceedings Volume 8847, 884715 (2013) https://doi.org/10.1117/12.2022610

KEYWORDS: Diffraction, Diffraction gratings, Holography, Crystals, Switching, Copper, Cerium, Ultraviolet radiation, Holograms, Photovoltaics

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Proceedings Article | 17 September 2013 Paper

Optical imaging process based on two-dimensional Fourier transform for synthetic aperture imaging ladar

Zhiwei Sun, Ya'nan Zhi, Liren Liu, Jianfeng Sun, Yu Zhou, Peipei Hou

Proceedings Volume 8877, 88770L (2013) https://doi.org/10.1117/12.2022977

KEYWORDS: Image processing, Fourier transforms, Synthetic aperture imaging, LIDAR, Synthetic aperture radar, Spherical lenses, Imaging systems, Liquid crystals, Data processing, Optical imaging

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Proceedings Article | 17 September 2013 Paper

The impact of space-time speckle to the resolution in range and azimuth direction on synthetic aperture imaging ladar

Qian Xu, Yu Zhou, Jianfeng Sun, Ya'nan Zhi, Xiaoping Ma, Zhiwei Sun, Dong Lu, Liren Liu

Proceedings Volume 8877, 88770K (2013) https://doi.org/10.1117/12.2022974

KEYWORDS: Speckle, Image resolution, Synthetic aperture imaging, LIDAR, Computer simulations, Antennas, Fourier transforms, Image quality, Optical antennas, Image processing

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Proceedings Article | 17 September 2013 Paper

Optimum pattern of the multi-aperture receiver for the synthetic aperture laser imaging ladar in the turbulence environment

Jianfeng Sun, Yu Zhou, Ya'nan Zhi, Liren Liu

Proceedings Volume 8877, 88770N (2013) https://doi.org/10.1117/12.2022999

KEYWORDS: Receivers, Turbulence, Heterodyning, LIDAR, Synthetic aperture radar, Image resolution, Laser imaging, Imaging systems, Atmospheric optics, Transmitters

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Proceedings Article | 24 October 2012 Paper

Polarization phase-shifting cyclic Jamin shearing interferometer

Lijuan Wang, Liren Liu, Jianfeng Sun, Yu Zhou, Enwen Dai, Yapeng Wu

Proceedings Volume 8517, 851715 (2012) https://doi.org/10.1117/12.928399

KEYWORDS: Phase shifts, Polarization, Interferometers, Shearing interferometers, Wavefronts, Prisms, Phase shifting, Adaptive optics, Reflectivity, Visibility

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Proceedings Article | 24 October 2012 Paper

High data-rate differential phase shift keying receiver for satellite-to-ground optical communication link

Yan'an Zhi, Jianfeng Sun, Enwen Dai, Yu Zhou, Lijuan Wang, Wei Lu, Peipei Hou, Liren Liu

Proceedings Volume 8517, 85170F (2012) https://doi.org/10.1117/12.928391

KEYWORDS: Receivers, Optical communications, Satellites, Satellite communications, Atmospheric turbulence, Atmospheric optics, Phase shift keying, Wavefronts, Hybrid optics, Modulation

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Proceedings Article | 15 October 2012 Paper

A large-angle high speed scanner based on electro-optic crystal for Fresnel telescope synthetic aperture imaging ladar

Jun Xu, Ya'nan Zhi, Xuping Wang, Jianfeng Sun, Yu Zhou, Enwen Dai, Liren Liu

Proceedings Volume 8520, 85200V (2012) https://doi.org/10.1117/12.928398

KEYWORDS: Crystals, Scanners, Space telescopes, Telescopes, LIDAR, Synthetic aperture imaging, Electro optics, Laser crystals, Refractive index, Imaging systems

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Proceedings Article | 15 October 2012 Paper

The simulation of space-time speckle and impact based on synthetic aperture imaging ladar

Qian Xu, Liren Liu, Yu Zhou, Jianfeng Sun, Yapeng Wu

Proceedings Volume 8520, 85200U (2012) https://doi.org/10.1117/12.928396

KEYWORDS: Speckle, Antennas, Synthetic aperture imaging, LIDAR, Speckle pattern, Numerical simulations, Image resolution, Spatial resolution, Heterodyning, Optical design

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Proceedings Article | 15 October 2012 Paper

Phase error correction by phase differential algorithm for synthetic aperture imaging ladar

Ya'nan Zhi, Jianfeng Sun, Peipei Hou, Enwen Dai, Yu Zhou, Liren Liu

Proceedings Volume 8520, 85200S (2012) https://doi.org/10.1117/12.928393

KEYWORDS: Optical filters, LIDAR, Personal digital assistants, Synthetic aperture imaging, Fourier transforms, Reconstruction algorithms, Detection and tracking algorithms, Phase shifts, Linear filtering, Imaging systems

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Proceedings Article | 15 October 2012 Paper

Laser speckle effect overcome using multireceiver method in the synthetic aperture laser imaging ladar

Jianfeng Sun, Yu Zhou, Ya'nan Zhi, Enwen Dai, Liren Liu

Proceedings Volume 8520, 85200T (2012) https://doi.org/10.1117/12.928394

KEYWORDS: Speckle, LIDAR, Superposition, Receivers, Image quality, Synthetic aperture radar, Transmitters, Super resolution, Diffraction, Laser applications

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Proceedings Article | 24 September 2011 Paper

Simulations of optical autofocus algorithms based on PGA in SAIL

Nan Xu, Liren Liu, Qian Xu, Yu Zhou, Jianfeng Sun

Proceedings Volume 8135, 81351C (2011) https://doi.org/10.1117/12.890929

KEYWORDS: Principal component analysis, Error analysis, Computer simulations, Optical simulations, Synthetic aperture radar, Image compression, Image resolution, Synthetic aperture imaging, LIDAR, Algorithm development

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Proceedings Article | 22 September 2011 Paper

A new method for acquiring the complex hologram in optical scanning holography

Meijuan Zhu, Enwen Dai, Liren Liu, Jianfeng Sun, Yapeng Wu, Yu Zhou, Aimin Yan, Yanan Zhi

Proceedings Volume 8134, 81340R (2011) https://doi.org/10.1117/12.892448

KEYWORDS: Holograms, Holography, Polarization, Hybrid optics, 3D image processing, Sensors, Optical scanning, Heterodyning, 3D scanning, Spherical lenses

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Proceedings Article | 22 September 2011 Paper

Comparison of the diffraction characteristics of continuous wave, ultrashort laser pulse, and chirped ultrashort pulse diffracted by multilayer reflection volume holographic gratings

Aimin Yan, Jianfeng Sun, Yu Zhou, Yanan Zhi, Wei Lu, Liren Liu

Proceedings Volume 8130, 81300V (2011) https://doi.org/10.1117/12.892654

KEYWORDS: Diffraction, Ultrafast phenomena, Diffraction gratings, Holography, Volume holography, Continuous wave operation, Multilayers, Pulsed laser operation, Diffractive optical elements, Pulse shaping

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Proceedings Article | 15 September 2011 Paper

Acquisition strategy for the satellite laser communications under the laser terminal scanning errors situation

Jianfeng Sun, Liren Liu, Wei Lu, Aimin Yan, Yu Zhou

Proceedings Volume 8162, 81620U (2011) https://doi.org/10.1117/12.893380

KEYWORDS: Laser communications, Satellites, Error analysis, Satellite communications, Raster graphics, Telecommunications, Laser systems engineering, Signal detection, Satellite navigation systems, Receivers

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Proceedings Article | 15 September 2011 Paper

Simple phase-shifting method in Jamin double-shearing interferometer for testing of diffraction-limited wavefront

Lijuan Wang, Liren Liu, Zhu Luan, Jianfeng Sun, Yu Zhou

Proceedings Volume 8162, 81620S (2011) https://doi.org/10.1117/12.892661

KEYWORDS: Phase shifts, Interferometers, Wavefronts, Polarization, Shearing interferometers, Semiconductor lasers, Laser communications, Phase shifting, Phase interferometry, Polarizers

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Proceedings Article | 15 September 2011 Paper

Control analysis of acquirement and locking in inter-satellite laser communications

Wei Lu, Jianfeng Sun, Yu Zhou, Yapeng Wu, Aimin Yan, Enwen Dai, Yanan Zhi, Liren Liu

Proceedings Volume 8162, 81620Z (2011) https://doi.org/10.1117/12.892656

KEYWORDS: Staring arrays, Laser communications, Telecommunications, Acquisition tracking and pointing, Satellites, Sensors, Satellite communications, Control systems, Optical simulations, Optical tracking

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Proceedings Article | 15 September 2011 Paper

An aperture-matched phase-compensated differential phase shift keying receiver with a 90° hybrid

Zhu Luan, Yu Zhou, Yanan Zhi, Enwen Dai, Jianfeng Sun, Liren Liu

Proceedings Volume 8162, 81620O (2011) https://doi.org/10.1117/12.891125

KEYWORDS: Phase shift keying, Receivers, Free space optics, Modulation, Laser communications, Polarization, Lenses, Atmospheric optics, Data communications, Hybrid optics

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Proceedings Article | 14 September 2011 Paper

Laboratory demonstration of Fresnel telescope imaging ladar

Enwen Dai, Liren Liu, Jianfeng Sun, Yapeng Wu, Yu Zhou, Aimin Yan, Yanan Zhi

Proceedings Volume 8165, 816510 (2011) https://doi.org/10.1117/12.892446

KEYWORDS: Imaging systems, Telescopes, LIDAR, Hybrid optics, Receivers, Polarization, Beam splitters, Wave plates, Holograms, Space telescopes

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Proceedings Article | 8 September 2011 Paper

Maximum fixing efficiency of thermal fixing by optimal switching in LiNbO3:Fe crystal

Peipei Hou, Ya'nan Zhi, Jianfeng Sun, Yu Zhou, Yongjian Zhu, Liren Liu

Proceedings Volume 8120, 812010 (2011) https://doi.org/10.1117/12.892650

KEYWORDS: Diffraction, Diffraction gratings, Crystals, Switching, Holograms, Holography, Thermal efficiency, Ions, Modulation, Iron

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Proceedings Article | 20 August 2011 Paper

Modified radon-Fourier transform for reflective tomography laser radar imaging

Xiaofeng Jin, Jianfeng Sun, Yi Yan, Yu Zhou, Liren Liu

Proceedings Volume 8192, 81921S (2011) https://doi.org/10.1117/12.900227

KEYWORDS: Tomography, Reflectivity, LIDAR, Image restoration, Detection and tracking algorithms, Reconstruction algorithms, Computer simulations, Target detection, Radar imaging, Fourier transforms

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Proceedings Article | 20 August 2011 Paper

Research on dynamic facula orientation deviation during tracking and pointing in the space laser communication

Baoliang Shen, Jianfeng Sun, Yu Zhou, Lili Pu, Bing Li, Liren Liu

Proceedings Volume 8192, 81922I (2011) https://doi.org/10.1117/12.900677

KEYWORDS: Turbulence, Charge-coupled devices, Atmospheric turbulence, Sensors, Laser communications, Atmospheric propagation, Fourier transforms, Free space optics, CCD image sensors, Speckle

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SPIE Journal Paper | 1 July 2011

Phase measurements for beam splitters with coherent detection technique

Lingyu Wan, Yu Zhou, Jianfeng Sun, Liren Liu, Peipei Hou

OE, Vol. 50, Issue 07, 073604, (July 2011) https://doi.org/10.1117/12.10.1117/1.3602877

KEYWORDS: Beam splitters, Polarization, Phase measurement, Oscilloscopes, Collimation, Receivers, Phase shifts, Sun, Laser communications, Free space optics

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Proceedings Article | 21 February 2011 Paper

Pulse shaping properties of multi-layer volume holographic gratings

Aimin Yan, Liren Liu, Jianfeng Sun, Yu Zhou

Proceedings Volume 7937, 793721 (2011) https://doi.org/10.1117/12.880339

KEYWORDS: Diffraction, Ultrafast phenomena, Diffraction gratings, Holography, Volume holography, Pulsed laser operation, Pulse shaping, Optical components, Multilayers, Refractive index

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SPIE Journal Paper | 1 December 2010

Optical 90-deg hybrid of birefringent crystals for freely propagating laser beams

Lingyu Wan, Yanan Zhi, Yu Zhou, Liren Liu

OE, Vol. 49, Issue 12, 125004, (December 2010) https://doi.org/10.1117/12.10.1117/1.3526334

KEYWORDS: Hybrid optics, Crystals, Laser crystals, Laser beam propagation, Phase shifts, Beam splitters, Polarization, Free space optics, Oscillators, Atmospheric propagation

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Proceedings Article | 28 August 2010 Paper

Receiving characteristics of coherent LADAR under partially coherent condition

Lily Pu, Yu Zhou, Baoliang Shen, Jianfeng Sun, Liren Liu

Proceedings Volume 7818, 78180S (2010) https://doi.org/10.1117/12.859966

KEYWORDS: Signal to noise ratio, Heterodyning, LIDAR, Signal detection, Sensors, Oscillators, Scattering, Spatial coherence, Gaussian beams, Laser scattering

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Proceedings Article | 28 August 2010 Paper

A synthetic aperture imaging ladar demonstrator with Ø300mm antenna and changeable footprint

Yu Zhou, Yanan Zhi, Aimin Yan, Nan Xu, Lijuan Wang, Yapeng Wu, Zhu Luan, Jianfeng Sun, Liren Liu

Proceedings Volume 7818, 78180T (2010) https://doi.org/10.1117/12.859971

KEYWORDS: Telescopes, Near field optics, Hybrid optics, Antennas, Space telescopes, Wavefronts, Polarization, Synthetic aperture imaging, LIDAR, Receivers

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Proceedings Article | 28 August 2010 Paper

Imaging system of Fresnel telescopy

Xiaoyu Lv, Liren Liu, Aimin Yan, Ya'nan Zhi, Jianfeng Sun, Yu Zhou, Bing Li

Proceedings Volume 7818, 78180Z (2010) https://doi.org/10.1117/12.859984

KEYWORDS: Signal processing, Image resolution, Target detection, Convolution, Zone plates, Imaging systems, Holography, 3D image reconstruction, Image processing, Computer programming

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Proceedings Article | 28 August 2010 Paper

Design and development of control software in the experiment system of synthetic aperture laser imaging radar

Yapeng Wu, Yu Zhou, Ya'nan Zhi, Jianfeng Sun, Wei Lu, Liren Liu

Proceedings Volume 7818, 781810 (2010) https://doi.org/10.1117/12.860009

KEYWORDS: Control systems, Visualization, Software development, Imaging systems, Computing systems, Laser sources, LabVIEW, Digital signal processing, Synthetic aperture imaging, LIDAR

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Proceedings Article | 24 August 2010 Paper

Self-homodyne interferometric detection in 2×4 optical hybrid for free-space optical communication

Ya'nan Zhi, Yu Zhou, Jianfeng Sun, Aimin Yan, Zhu Luan, Liren Liu

Proceedings Volume 7814, 781412 (2010) https://doi.org/10.1117/12.859983

KEYWORDS: Interferometers, Free space optics, Free space optical communications, Receivers, Interferometry, Hybrid optics, Phase shifts, Modulation, Oscillators, Wave plates

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Proceedings Article | 24 August 2010 Paper

Control loop analysis of the complex axis in satellite laser communications

Wei Lu, Liren Liu, Jianfeng Sun, Yu Zhou, Yapeng Wu

Proceedings Volume 7814, 781410 (2010) https://doi.org/10.1117/12.859979

KEYWORDS: Staring arrays, Satellites, Laser communications, Satellite communications, Control systems, Telecommunications, Complex systems, Acquisition tracking and pointing, Optical tracking, Optical communications

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Proceedings Article | 24 August 2010 Paper

Design and fabrication of optical 90° hybrid by birefringent crystals for coherent receiver in free-space optical communication system

Ya'nan Zhi, Yu Zhou, Jianfeng Sun, Liren Liu

Proceedings Volume 7814, 781411 (2010) https://doi.org/10.1117/12.859981

KEYWORDS: Hybrid optics, Free space optics, Receivers, Crystals, Free space optical communications, Neodymium, Polarization, Telecommunications, Phase shifts, Phase compensation

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Proceedings Article | 24 August 2010 Paper

Electro-optic modulation experiments for light propagating bias the optic axis in LiNbO3

Lingyu Wan, Yu Zhou, Yanan Zhi, Liren Liu, Jianfeng Sun

Proceedings Volume 7781, 77810Z (2010) https://doi.org/10.1117/12.860395

KEYWORDS: Geometrical optics, Electro optics, Crystals, Modulation, Laser crystals, Phase shifts, Hybrid optics, Oscillators, Lithium, Laser applications

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Proceedings Article | 18 August 2010 Paper

Short pulselength direct-detect laser reflective tomography imaging ladar: field results

Jianfeng Sun, Xiaofeng Jin, Yu Zhou, Liren Liu

Proceedings Volume 7780, 778017 (2010) https://doi.org/10.1117/12.860010

KEYWORDS: Reflectivity, Tomography, Image restoration, Reconstruction algorithms, LIDAR, Image registration, Detection and tracking algorithms, Fourier transforms, Laser applications, Imaging systems

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Proceedings Article | 18 August 2010 Paper

Filters effects for different objects surfaces in reflective tomography laser radar

Xiaofeng Jin, Jianfeng Sun, Yi Yan, Yu Zhou, Liren Liu

Proceedings Volume 7780, 778016 (2010) https://doi.org/10.1117/12.859968

KEYWORDS: Reflectivity, Tomography, Image filtering, Bidirectional reflectance transmission function, LIDAR, Optical filters, Image restoration, Reconstruction algorithms, Imaging systems, Reflection

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Proceedings Article | 16 August 2010 Paper

Efficient beam combining with high brightness of a phase-locked laser array

Aimin Yan, Liren Liu, Enwen Dai, Jianfeng Sun, Yu Zhou, Yanan Zhi

Proceedings Volume 7789, 77890Z (2010) https://doi.org/10.1117/12.859978

KEYWORDS: Diffraction gratings, Diffraction, Optical design, Binary data, Optical simulations, Laser applications, Coherent beam combination, Phase shift keying, Photography, Phase compensation

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Proceedings Article | 3 August 2010 Paper

Large-optics shearing interferometer for the wavefront sensing of widely tunable laser

Zhu Luan, Lijuan Wang, Yu Zhou, Enwen Dai, Jianfeng Sun, Liren Liu

Proceedings Volume 7790, 779012 (2010) https://doi.org/10.1117/12.859761

KEYWORDS: Wavefronts, Mirrors, Shearing interferometers, Tunable lasers, Collimators, Wavefront sensors, Interferometers, Laser sources, Semiconductor lasers, Calibration

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Proceedings Article | 10 September 2009 Paper

Method to measure frequency change of tunable laser based on Jamin shearing interferometer

Lijuan Wang, Liren Liu, Jianfeng Sun, Yu Zhou, Zhu Luan, De'an Liu

Proceedings Volume 7432, 743218 (2009) https://doi.org/10.1117/12.824681

KEYWORDS: Tunable lasers, Semiconductor lasers, Shearing interferometers, Modulation, Sensors, Image sensors, Beam splitters, Interferometers, CCD image sensors, Image processing

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Proceedings Article | 10 September 2009 Paper

Measurement of frequency swept linearly with Fabry-Perot fiber interferometer

Zhu Luan, Nan Xu, De'an Liu, Yu Zhou, Liren Liu

Proceedings Volume 7432, 74321A (2009) https://doi.org/10.1117/12.824662

KEYWORDS: Fabry–Perot interferometers, Interferometers, Wavefronts, Shearing interferometers, Oscilloscopes, Synthetic aperture imaging, Laser applications, Fabry–Perot interferometry, Reflectivity, Tunable lasers

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Proceedings Article | 1 September 2009 Paper

A multi-purpose SAIL demonstrator design and its principle experimental verification

Yu Zhou, Aimin Yan, Nan Xu, Lijuan Wang, Zhu Luan, Jianfeng Sun, Liren Liu

Proceedings Volume 7468, 74680S (2009) https://doi.org/10.1117/12.825436

KEYWORDS: Telescopes, Antennas, Wavefronts, Optical instrument design, Signal detection, Image resolution, Oscillators, Signal processing, Synthetic aperture radar, Detection and tracking algorithms

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Proceedings Article | 21 August 2009 Paper

Optical birefringent 90° hybrid for coherent receiver in free-space optical communication system

Ya'nan Zhi, Yu Zhou, Jianfeng Sun, Aimin Yan, Zhu Luan, Lijuan Wang, Liren Liu

Proceedings Volume 7464, 746410 (2009) https://doi.org/10.1117/12.824680

KEYWORDS: Neodymium, Free space optics, Hybrid optics, Receivers, Polarization, Optical design, Free space optical communications, Telecommunications, Wave plates, Phase compensation

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Proceedings Article | 21 August 2009 Paper

Phase-mapping of domain wall kinetics in lithium niobate by digital holographic interferometry

Ya'nan Zhi, Jianfeng Sun, Yu Zhou, Aimin Yan, Zhu Luan, Enwen Dai, Liren Liu

Proceedings Volume 7420, 74200X (2009) https://doi.org/10.1117/12.824679

KEYWORDS: Crystals, Digital holography, Holographic interferometry, Polarization, Electro optics, Refractive index, Semiconducting wafers, Lithium niobate, Photonic crystals, Phase measurement

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Proceedings Article | 21 August 2009 Paper

Laser-induced preferential domain nucleation in hafnium-doped congruent LiNbO3 crystal

Peipei Hou, Ya'nan Zhi, Aimin Yan, Jianfeng Sun, Yu Zhou, Zhu Luan, Liren Liu

Proceedings Volume 7420, 74200W (2009) https://doi.org/10.1117/12.824677

KEYWORDS: Crystals, Photovoltaics, Laser crystals, Digital holography, Polarization, Holographic interferometry, Phase shifts, Lithium niobate, Crystallography, Laser interferometry

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Proceedings Article | 25 August 2008 Paper

Investigation of the double threshold effect of ultraviolet-laser-induced preferential domain nucleation in near stoichiometric LiTaO3

Ya'nan Zhi, De'an Liu, Aimin Yan, Jianfeng Sun, Yu Zhou, Zhu Luan, Yin Hang, Liren Liu

Proceedings Volume 7056, 705618 (2008) https://doi.org/10.1117/12.793962

KEYWORDS: Crystals, Ultraviolet radiation, Laser crystals, Lithium, Crystallography, Laser damage threshold, Phase shifts, Polarization, Photonic crystals, Digital holography

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Proceedings Article | 19 August 2008 Paper

Design of 2*6 optical hybrid in inter-satellite coherent laser communications

Nan Xu, Liren Liu, De'an Liu, Lingyu Wan, Yu Zhou

Proceedings Volume 7091, 70910T (2008) https://doi.org/10.1117/12.793964

KEYWORDS: Hybrid optics, Receivers, Optical design, Oscillators, Laser communications, Telescopes, Signal detection, Charge-coupled devices, Homodyne detection, Beam splitters

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Proceedings Article | 19 August 2008 Paper

Test results of the optical PAT test bed for satellite laser communications

Jianfeng Sun, Liren Liu, Yu Zhou, De'an Liu

Proceedings Volume 7091, 70910R (2008) https://doi.org/10.1117/12.793950

KEYWORDS: Acquisition tracking and pointing, Optical testing, Laser communications, Prisms, Optical scanning, Near field optics, Optical components, Telecommunications, Satellite communications, Satellites

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Proceedings Article | 19 August 2008 Paper

The mechanical design of the large-optics double-shearing interferometer for the test of diffraction-limited wavefront

Lijuan Wang, Liren Liu, Luan Zhu, Jianfeng Sun, Yu Zhou, De'an Liu

Proceedings Volume 7091, 70910S (2008) https://doi.org/10.1117/12.793954

KEYWORDS: Interferometers, Reflectors, Beam splitters, Wavefronts, Mechanical engineering, Metals, Optical fabrication, Phase shifts, Structural design, Optical benches

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Proceedings Article | 25 September 2007 Paper

Polarization phase-shifting double-shearing interferometer for the test of the diffraction-limited wavefront

Lijuan Wang, Liren Liu, Zhu Luan, Jianfeng Sun, Yu Zhou

Proceedings Volume 6709, 67091H (2007) https://doi.org/10.1117/12.731955

KEYWORDS: Interferometers, Phase shifts, Polarization, Polarizers, Wavefronts, Phase shifting, Shearing interferometers, Phase interferometry, Laser communications, Cameras

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Proceedings Article | 17 September 2007 Paper

Investigation of domain inversion and internal field in congruent lithium niobate by digital holographic interferometry

Ya'nan Zhi, De'an Liu, Weijuan Qu, Yu Zhou, Zhu Luan, Jianfeng Sun, Aimin Yan, Liren Liu

Proceedings Volume 6698, 66981I (2007) https://doi.org/10.1117/12.737812

KEYWORDS: Crystals, Holographic interferometry, Digital holography, Phase measurement, Lithium, Phase contrast, Polarization, Lithium niobate, Niobium, Holograms

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Proceedings Article | 17 September 2007 Paper

Holographic fixing with modulated light in two-center holographic recording

Yu Zhou, Liren Liu, Dean Liu, Aimin Yan, Ya'nan Zhi

Proceedings Volume 6698, 66981K (2007) https://doi.org/10.1117/12.738766

KEYWORDS: Holography, Diffraction, Modulation, Crystals, Electrons, Photovoltaics, Diffraction gratings, Ultraviolet radiation, Manganese, Iron

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Proceedings Article | 16 September 2006 Paper

Shaping of ultrashort pulsed beams with volume holographic gratings recorded in anisotropic crystals

Chunhua Wang, Liren Liu, Aimin Yan, Dean Liu, Zhijuan Hu

Proceedings Volume 6290, 62900V (2006) https://doi.org/10.1117/12.678283

KEYWORDS: Crystals, Polarization, Diffraction, Volume holography, Holography, Diffraction gratings, Modulation, Laser crystals, Crystal optics, Pulse shaping

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Proceedings Article | 1 September 2006 Paper

Double-prism scanner for testing tracking performance of inter-satellite laser communication terminals

Anhu Li, Liren Liu, Jianfeng Sun, Xianghong Zhong, Deyan Xu, Qiande Shen, Yu Zhou, Zhu Luan, Lijuan Wang

Proceedings Volume 6304, 63041R (2006) https://doi.org/10.1117/12.678413

KEYWORDS: Prisms, Scanners, Autocollimators, Laser communications, Refraction, Collimators, Laser scanners, 3D scanning, Control systems, Structural design

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Proceedings Article | 1 September 2006 Paper

A double-focus collimator system for full PAT performance testing of inter-satellite laser communication terminals

Lijuan Wang, Zhu Luan, Jianfeng Sun, Yu Zhou, De'an Liu, Liren Liu

Proceedings Volume 6304, 63041T (2006) https://doi.org/10.1117/12.678281

KEYWORDS: Collimators, Beam splitters, Acquisition tracking and pointing, Laser communications, Laser scanners, 3D scanning, Reflectors, Telecommunications, Image resolution, Optical sensors

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Proceedings Article | 24 August 2006 Paper

Wavefront conversion by 90-degree geometry volume holograms between plane and spherical waves

Aimin Yan, Liren Liu, De'an Liu, Yu Zhou, Zhu Luan

Proceedings Volume 6314, 631419 (2006) https://doi.org/10.1117/12.678307

KEYWORDS: Holography, Spherical lenses, Holograms, Wavefronts, Volume holography, Holographic optical elements, Crystals, Optical design, Lenses, Laser crystals

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Proceedings Article | 24 August 2006 Paper

Domain inversion and electrochromism in congruent RuO2:LiNbO3 crystal

Ya'nan Zhi, De'an Liu, Weijuan Qu, Yu Zhou, Zhifang Chai, Zhu Luan, Liren Liu

Proceedings Volume 6314, 63141A (2006) https://doi.org/10.1117/12.678399

KEYWORDS: Ruthenium, Crystals, Holographic interferometry, Annealing, Digital holography, Transmittance, Ions, Electrodes, Iron, Optical testing

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Proceedings Article | 20 January 2006 Paper

Optimization of components and oxidation states for effective 90-degree holographic recording in LiNbO₃:Fe crystals

Dean Liu, Liren Liu, Zhifang Chai, Yu Zhou, Zhu Luan

Proceedings Volume 6027, 60272B (2006) https://doi.org/10.1117/12.668206

KEYWORDS: Crystals, Diffraction, Holography, Iron, Laser crystals, Scattering, Diffraction gratings, Ions, Optical design, Oxidation

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Proceedings Article | 7 October 2005 Paper

The analysis and the enhancement of low diffraction efficiency in 90-degree holographic recording geometry

Yu Zhou, Liren Liu, Zhu Luan, Aimin Yan, Lijuan Wang

Proceedings Volume 5911, 591115 (2005) https://doi.org/10.1117/12.612927

KEYWORDS: Diffraction, Diffraction gratings, Holography, Crystals, Modulation, Iron, Refractive index, Holograms, Ultraviolet radiation, Manganese

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Proceedings Article | 7 October 2005 Paper

Improvement of diffraction efficiency for 90-degree holographic recording geometry by using external electric fields in Fe-doped LiNbO3 crystals

Aimin Yan, De'an Liu, Yu Zhou, Zhu Luan, Liren Liu

Proceedings Volume 5911, 591119 (2005) https://doi.org/10.1117/12.612719

KEYWORDS: Crystals, Diffraction, Holography, Iron, Holograms, Laser crystals, Diffraction gratings, Electro optics, Neodymium, Volume holography

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Proceedings Article | 7 October 2005 Paper

Improvement of the nonvolatile holographic recording by application of external electric field

Cuixia Dai, Liren Liu, De'an Liu, Yu Zhou, Lijuan Wang

Proceedings Volume 5911, 59111E (2005) https://doi.org/10.1117/12.612712

KEYWORDS: Crystals, Holography, Photovoltaics, Ultraviolet radiation, Laser crystals, Diffraction, Holograms, Holography applications, Phase shifts, Surface plasmons

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Proceedings Article | 7 October 2005 Paper

Bragg diffraction grating focusing-device design based on periodically inverted domains in lithium niobate crystals

Zhijuan Hu, Liren Liu, Zhu Luan, Yu Zhou, Xin Wang

Proceedings Volume 5911, 59111C (2005) https://doi.org/10.1117/12.612715

KEYWORDS: Crystals, Optical design, Lithium niobate, Electro optics, Integrated optics, Fiber Bragg gratings, Diffraction, Refractive index, Diffraction gratings, Electrodes

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Proceedings Article | 19 August 2005 Paper

Electrically controllable polarization-assisted superresolution with radial birefringent filter

Jiming Wang, Liren Liu, De'an Liu, Maojin Yun, Yu Zhou

Proceedings Volume 5888, 58881A (2005) https://doi.org/10.1117/12.612718

KEYWORDS: Super resolution, Polarization, Optical filters, Crystals, Point spread functions, Polarizers, Wave plates, Modulation, Electro optics, Optical components

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Proceedings Article | 7 February 2005 Paper

High-coupling effect of local nonvolatile holographic gratings in doubly doped LiNbO3 crystals and their applications for 3D optical integrations

Liren Liu, De'an Liu, Zhu Luan, Yu Zhou, Aimin Yan

Proceedings Volume 5636, (2005) https://doi.org/10.1117/12.576932

KEYWORDS: Diffraction, Crystals, Holography, Diffraction gratings, Switching, Lenses, Integrated optics, Holograms, Laser crystals, Volume holography

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