Prof. Dean Liu Profile

KEYWORDS: Image quality, Imaging systems, Interference (communication), Extreme ultraviolet, Diffraction, Diffractive optical elements, X-ray imaging, X-rays

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Proceedings Article | 15 November 2018 Paper

Phase-shifting digital holography with vortex lens

Xiuping Zhang, Junyong Zhang, Dean Liu, Jianqiang Zhu

Proceedings Volume 10964, 109641A (2018) https://doi.org/10.1117/12.2505170

KEYWORDS: Phase shifts, Holography, Digital holography, Holograms, Charge-coupled devices, Diffraction, Diffractive optical elements, Spiral phase plates, X-rays

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Proceedings Article | 15 February 2018 Presentation + Paper

A developmental perspective on high power laser facility technology for ICF

Jianqiang Zhu, Mingying Sun, Chong Liu, Yajing Guo, Lin Yang, Pengqian Yang, Yanli Zhang, Bingyan Wang, Cheng Liu, Yangshuai Li, Zhiyuan Ren, Dean Liu, Zhigang Liu, Zhaoyang Jiao, Lei Ren, Guowen Zhang, Quantang Fan, Tao Feng, Zunqi Lin

Proceedings Volume 10511, 105110Y (2018) https://doi.org/10.1117/12.2289858

KEYWORDS: High power lasers, Laser induced damage, Optical components, Laser applications

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Proceedings Article | 24 October 2017 Paper

Compensation for the phase-type spatial periodic modulation of the near-field beam at 1053 nm

Yaru Gao, Dean Liu, Aihua Yang, Ruyu Tang, Jianqiang Zhu

Proceedings Volume 10457, 104572V (2017) https://doi.org/10.1117/12.2284954

KEYWORDS: Modulation, Near field

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Proceedings Article | 1 August 2017 Paper

Prejudgement of hot-images’ damage based on gradient direction matching method in high power laser system

Aihua Yang, Dean Liu, Yaru Gao, Jie Miao, Jianqiang Zhu

Proceedings Volume 10339, 103390K (2017) https://doi.org/10.1117/12.2272159

KEYWORDS: Diffraction, High power lasers, Laser systems engineering, Near field

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Proceedings Article | 23 February 2017 Presentation + Paper

High power glass laser research progresses in NLHPLP

Jianqiang Zhu, Jian Zhu, Xuechun Li, Baoqiang Zhu, Weixin Ma, Dean Liu, Cheng Liu, Xingqiang Lu, Wei Fan, Zhigang Liu, Dongfeng Zhao, Shenlei Zhou, Yanli Zhang, Li Wang, Mingying Sun, Bingyan Wang, Zhaoyang Jiao, Lei Ren, Guowen Zhang, Jie Miao, Zunqi Lin

Proceedings Volume 10084, 1008405 (2017) https://doi.org/10.1117/12.2251731

KEYWORDS: High power lasers, Optical amplifiers, Fusion energy, Laser damage threshold, Glasses, Laser glasses, Physics, Laser development, Prototyping, Near field, Spatial filters, Modulation

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A new high power laser facility with 8 beams and maximum output energy of one beam 5kJ/3.4ns/3ω has been performed and operated since 2015. Combined together the existing facilities have constructed a multifunction experimental platform including multi-pulse width of ns, ps and fs and active probing beam, which is an effective tool for Inertial Confinement Fusion (ICF) and High Energy Density (HED) researches. In addition another peculiar high power laser prototype pushes 1ω maximum output energy to 16kJ in 5ns and 17.5kJ in 20ns in flat-in-time pulse, this system is based on large aperture four-pass main amplifier architecture with 310mm×310mm output beam aperture. Meanwhile the near field and far field have good quality spanning large energy scope by use of a wide range of technologies, such as reasonable overall design technique, the integrated front end, cleanness class control, nonlinear laser propagation control, wave-front adaptive optics and precision measurement. Based on this excellent backup, 3ω damage research project is planning to be implemented. To realize the above aims, the beam expanding scheme in final transport spatial filter could be adopted considering tradeoff between the efficient utilization of 1ω output and 3ω damage threshold. Besides for deeply dissecting conversion process for beam characteristic influence of 1ω beam, WCI (Wave-front Code Image) instrument with refined structure would be used to measure optical field with simultaneous high precision amplitude and phase information, and what’s more WCI can measure the 1ω, 2ω and 3ω optical field in the same time at same position, so we can analyze the 3ω beam quality evolution systematically, and ultimately to improve the 3ω limited output.

In a word, we need pay attention to some aspects contents with emphasis for future huger laser facility development. The first is to focus the new technology application. The second is to solve the matching problem between 1ω beam and the 3ω beam. The last is to build the whole effective design in order to improve efficiency and cost performance.

Proceedings Article | 5 August 2015 Paper

Analysis of 808nm centered optical parametric chirped pulse amplifier based on DKDP crystals

Meizhi Sun, Zijian Cui, Jun Kang, Yanli Zhang, Junyong Zhang, Ying Cui, Xinglong Xie, Cheng Liu, Dean Liu, Jianqiang Zhu, Zunqi Lin

Proceedings Volume 9621, 96210R (2015) https://doi.org/10.1117/12.2192939

KEYWORDS: Crystals, Nonlinear crystals, Optical amplifiers, Signal attenuation, Laser crystals, Transmittance, Solids, High power lasers, Laser applications, Phase matching

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Proceedings Article | 5 August 2015 Paper

Influence of phase mismatching on temporal waveform of pulse in the process of frequency conversion

Zijian Cui, Dean Liu, Yaqun Liu, Jie Miao, Shenlei Zhou, Baoqiang Zhu, Jianqiang Zhu

Proceedings Volume 9621, 962107 (2015) https://doi.org/10.1117/12.2191489

KEYWORDS: Second-harmonic generation, Crystals, Frequency conversion, Harmonic generation, Nonlinear crystals, Laser crystals, Energy efficiency, Dispersion, Numerical analysis, Phase matching

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Proceedings Article | 18 November 2014 Paper

Precise measurement of transmittance and reflectance for large aperture optics

Jie Miao, De'an Liu, Yujiang Xie, Hongchao Hui, Lin Yang, Dongxian Chen, Pengqian Yang, Baoqiang Zhu, Jianqiang Zhu

Proceedings Volume 9266, 92660C (2014) https://doi.org/10.1117/12.2074578

KEYWORDS: Transmittance, Heterodyning, Reflectivity, Demodulation, Geometrical optics, Adaptive optics, Signal detection, Optical testing, Mirrors, Sensors

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Proceedings Article | 31 October 2014 Paper

Evaluation damage threshold of optical thin-film using an amplified spontaneous emission source

Qiong Zhou, Mingying Sun, Zhixiang Zhang, Yudong Yao, Yujie Peng, Dean Liu, Jianqiang Zhu

Proceedings Volume 9237, 923729 (2014) https://doi.org/10.1117/12.2068127

KEYWORDS: Laser damage threshold, Laser induced damage, Optical components, Near field optics, Thin films, Laser sources, Superluminescent sources, Near field, High power lasers, Modulation

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Proceedings Article | 15 October 2012 Paper

Phase error analysis for birefringent homogeneity measurements of large-scale optical materials with spherical mirror

Xiao Zhang, Jie Miao, Dean Liu, Jianqiang Zhu, Jianjun Hu

Proceedings Volume 8417, 84170B (2012) https://doi.org/10.1117/12.975829

KEYWORDS: Spherical lenses, Birefringence, Error analysis, Mirrors, Polarization, Optical testing, Crystals, Optics manufacturing, Calibration, Phase shifts

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Proceedings Article | 12 January 2012 Paper

Extrapolation of small area test of laser induced damage to large area test

Wei Wang, Dean Liu, Jie Miao, Junyong Zhang, Pingping Sun, Yanli Zhang, Kun Xiao, Jianqiang Zhu

Proceedings Volume 8206, 82061O (2012) https://doi.org/10.1117/12.910479

KEYWORDS: Monte Carlo methods, Laser induced damage, Laser damage threshold, Gaussian beams, Optical components, Optical simulations, High power lasers, Reliability, Laser irradiation, Performance modeling

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Proceedings Article | 23 August 2010 Paper

Evolution of low-frequency noise passing through spatial filter in high power laser system

Pingping Sun, Dean Liu, Yanli Zhang, Xiaoyan Li, Yan Zhang, Jianqiang Zhu

Proceedings Volume 7789, 778910 (2010) https://doi.org/10.1117/12.860531

KEYWORDS: Spatial filters, Modulation, High power lasers, Laser systems engineering, Optical components, Complex systems, Spatial frequencies, Diffraction, Phase modulation, Interference (communication)

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Proceedings Article | 3 August 2010 Paper

Wave-front reconstruction by digital phase retrieval method in high power laser

Wei Huang, Dean Liu, Xuejie Zhang, Yan Zhang, Jianqiang Zhu

Proceedings Volume 7790, 779019 (2010) https://doi.org/10.1117/12.860542

KEYWORDS: Phase retrieval, Reconstruction algorithms, Phase measurement, High power lasers, Near field diffraction, Wavefronts, Image processing, Charge-coupled devices, Photovoltaics, Computer simulations

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Proceedings Article | 2 August 2010 Paper

Integrated interferometer for monitoring three-dimensional vibrations in high-power laser system

Xuejie Zhang, Wei Huang, De'an Liu, Yan Zhang, Yanli Zhang, Jianqiang Zhu

Proceedings Volume 7791, 77910H (2010) https://doi.org/10.1117/12.860533

KEYWORDS: Interferometers, Mirrors, Beam splitters, Spherical lenses, Laser systems engineering, Optical components, High power lasers, Reflectivity, Interferometry, Optical testing

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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 | 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 | 1 September 2009 Paper

Study of nonlinear phase error correction technique for synthetic aperture ladar

De'an Liu, Enwen Dai, Nan Xu, Liren Liu

Proceedings Volume 7442, 744214 (2009) https://doi.org/10.1117/12.826002

KEYWORDS: Fourier transforms, Heterodyning, LIDAR, Error analysis, Phase shifts, Image resolution, Range imaging, Nonlinear optics, Modulation, Frequency modulation

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Proceedings Article | 1 September 2009 Paper

Design of a dynamically configurable OADM device

Cuixia Dai, Qianmin Dong, Liren Liu, Dean Liu

Proceedings Volume 7442, 74421I (2009) https://doi.org/10.1117/12.828844

KEYWORDS: Crystals, Holography, Volume holography, Electro optics, Crystallography, Wavelength division multiplexing, Electrodes, Crystal optics, Resistance, Lithium niobate

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Proceedings Article | 9 February 2009 Paper

A new 90-degree hybrid for coherent receivers in free-space laser communications

Lingyu Wan, Sushi Da, Liren Liu, Dean Liu

Proceedings Volume 7158, 71580D (2009) https://doi.org/10.1117/12.810980

KEYWORDS: Crystals, Hybrid optics, Laser crystals, Receivers, Beam splitters, Polarization, Free space optics, Phase shifts, Free space optical communications, Oscillators

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Proceedings Article | 3 September 2008 Paper

Multi-beam coupling in doubly-doped photorefractive LiNbO3:Fe:Mn crystals

Cuixia Dai, Yingjie Yu, De'an Liu, Liren Liu

Proceedings Volume 7072, 707213 (2008) https://doi.org/10.1117/12.798827

KEYWORDS: Crystals, Electrons, Signal processing, Laser crystals, Ultraviolet radiation, Holography, Silicon, Photovoltaics, Mechatronics, Mechanics

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Proceedings Article | 25 August 2008 Paper

Ultraviolet-infrared laser-induced domain inversion in MgO-doped congruent LiNbO3 and near stoichiometric LiTaO3 crystals

Ya'nan Zhi, Weijuan Qu, De'an Liu, Jianfeng Sun, Aimin Yan, Liren Liu

Proceedings Volume 7056, 70560Y (2008) https://doi.org/10.1117/12.796343

KEYWORDS: Crystals, Laser crystals, Digital holography, Holographic interferometry, Charge-coupled devices, Phase shifts, Phase contrast, Ultraviolet radiation, Laser interferometry, Polarization

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Proceedings Article | 25 August 2008 Paper

Maximized diffraction efficiency for integrated volume grating instruments

Zhifang Chai, De'an Liu, Liren Liu, Ya'nan Zhi

Proceedings Volume 7056, 70561D (2008) https://doi.org/10.1117/12.794661

KEYWORDS: Diffraction, Diffraction gratings, Crystals, Multiplexing, Manganese, Absorption, Laser crystals, Iron, Electrons, Photonic crystals

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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

Coherent area inside partially coherent laser beam through atmospheric and sea water turbulences

Wei Lu, Liren Liu, De'an Liu, Jianfeng Sun, Aimin Yan

Proceedings Volume 7091, 70910U (2008) https://doi.org/10.1117/12.793977

KEYWORDS: Turbulence, Atmospheric propagation, Laser beam propagation, Atmospheric turbulence, Beam propagation method, Radio propagation, Refractive index, Atmospheric propagation engineering, Electromagnetism, Free space

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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

Large-Optics white light interferometer for laser wavefront test: apparatus and application

Zhu Luan, Liren Liu, Lijuan Wang, De'an Liu

Proceedings Volume 7091, 70910Q (2008) https://doi.org/10.1117/12.793515

KEYWORDS: Wavefronts, Interferometers, Mirrors, Optics manufacturing, Light emitting diodes, Calibration, Collimators, Laser sources, Helium neon lasers, Laser communications

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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

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 | 26 September 2007 Paper

Range estimation based on multiple imaging

Qingguo Yang, Liren Liu, De'an Liu, Zhu Luan

Proceedings Volume 6712, 67120L (2007) https://doi.org/10.1117/12.731952

KEYWORDS: Prisms, Cameras, Sensors, Coded aperture imaging, Imaging arrays, Ranging, 3D image processing, Image processing, Imaging systems, Image sensors

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Proceedings Article | 25 September 2007 Paper

Technical scheme and corresponding experiment for the PAT performance of a lasercom using an integrated test-bed

Jianfeng Sun, Liren Liu, Lijuan Wang, Zhu Luan, De'an Liu, Nan Xu, Xianghong Zhong

Proceedings Volume 6709, 67091F (2007) https://doi.org/10.1117/12.731953

KEYWORDS: Acquisition tracking and pointing, Optical tracking, Laser communications, Sensors, Integrated optics, Optical scanning, Optical testing, Computing systems, Computer simulations, Prisms

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Proceedings Article | 25 September 2007 Paper

Scintillation index of electromagnetic Gaussian Schell-model beams on propagation through atmospheric turbulence

Wei Lu, Liren Liu, De'an Liu, Jianfeng Sun

Proceedings Volume 6709, 67091G (2007) https://doi.org/10.1117/12.731954

KEYWORDS: Scintillation, Atmospheric propagation, Turbulence, Radio propagation, Electromagnetism, Beam propagation method, Atmospheric turbulence, Free space, Global system for mobile communications, Free space optics

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Proceedings Article | 25 September 2007 Paper

Coherent detection of position errors in inter-satellite laser communications

Nan Xu, Liren Liu, De'an Liu, Jianfeng Sun, Zhu Luan

Proceedings Volume 6709, 67091I (2007) https://doi.org/10.1117/12.732300

KEYWORDS: Receivers, Signal detection, Telecommunications, Telescopes, Laser communications, Space telescopes, Sensors, Charge-coupled devices, Target detection, Hybrid optics

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Proceedings Article | 25 September 2007 Paper

Single and double shearing interferometers series for laser wave front testing

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

Proceedings Volume 6709, 67091E (2007) https://doi.org/10.1117/12.731948

KEYWORDS: Wavefronts, Shearing interferometers, Optics manufacturing, Interferometers, Manufacturing, Spherical lenses, Reflection, Laser communications, Diffraction, Wavefront sensors

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Proceedings Article | 25 September 2007 Paper

An integrated test-bed for PAT testing and verification of inter-satellite lasercom terminals

Liren Liu, Lijuan Wang, Jianfeng Sun, Yu Zhou, Xianghong Zhong, De'an Liu, Aiming Yan, Nan Xu

Proceedings Volume 6709, 670904 (2007) https://doi.org/10.1117/12.731949

KEYWORDS: Acquisition tracking and pointing, Optical scanning, Collimators, Near field optics, Optical tracking, Prisms, Satellites, Integrated optics, Laser communications, Far-field diffraction

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Proceedings Article | 20 September 2007 Paper

Study of photorefractive recording in Ce:Cu:LiNbO₃ on the wavelengths dependence

Cuixia Dai, Yingjie Yu, Liren Liu, Dean Liu

Proceedings Volume 6695, 66951I (2007) https://doi.org/10.1117/12.735327

KEYWORDS: Diffraction, Ultraviolet radiation, Crystals, Diffraction gratings, Electrons, Holography, Cerium, Copper, Switching, Laser crystals

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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

Mechanism of light-induced domain nucleation in LiNbO3 crystals

De'an Liu, Ya'nan Zhi, Zhu Luan, Aimin Yan, Liren Liu

Proceedings Volume 6698, 669804 (2007) https://doi.org/10.1117/12.738713

KEYWORDS: Crystals, Magnesium, Thermal effects, Electrodes, Ultraviolet radiation, Charge-coupled devices, Nonlinear crystals, Doping, Crystallography, Lithium niobate

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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 | 17 September 2007 Paper

Near infrared nonvolatile holographic recording in doubly doped LiNbO₃:Fe crystals

Dashan Li, De'an Liu, Ya'nan Zhi, Wei Lu, Liren Liu

Proceedings Volume 6698, 669814 (2007) https://doi.org/10.1117/12.731944

KEYWORDS: Crystals, Holography, Iron, Holograms, Diffraction, Electrons, Photovoltaics, Near infrared, Cerium, Data storage

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Proceedings Article | 17 September 2007 Paper

Study of wavelength-dependent diffraction properties of photorefractive volume holographic lenses for optical beams conversion

Zhijuan Hu, Aimin Yan, Dean Liu, Liren Liu

Proceedings Volume 6698, 669816 (2007) https://doi.org/10.1117/12.732931

KEYWORDS: Holography, Diffraction, Spherical lenses, Lenses, Volume holography, Holograms, Diffraction gratings, Crystals, Optical design, Beam analyzers

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Proceedings Article | 17 September 2007 Paper

Quasi-nonvolatile holographic storage in doubly-doped LiNbO3 crystals

Zhifang Chai, De'an Liu, Liren Liu, Ya'nan Zhi, Dashan Li

Proceedings Volume 6698, 669815 (2007) https://doi.org/10.1117/12.731945

KEYWORDS: Crystals, Iron, Manganese, Diffraction, Electrons, Laser crystals, Diffraction gratings, Photovoltaics, Holography, Energy efficiency

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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 | 9 September 2006 Paper

Bragg diffraction of volume grating under finite Gaussian-profile ultrashort pulse illumination

Aimin Yan, Liren Liu, De'an Liu, Chunhua Wang

Proceedings Volume 6290, 62900X (2006) https://doi.org/10.1117/12.678306

KEYWORDS: Diffraction, Diffraction gratings, Ultrafast phenomena, Gaussian beams, Refractive index, Near field optics, Volume holography, Near field, Modulation, Optical design

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Proceedings Article | 1 September 2006 Paper

Physical basis and corresponding instruments for PAT performance testing of inter-satellite laser communication terminals

Liren Liu, Lijuan Wang, Zhu Luan, Jianfeng Sun, Anhu Li, De'an Liu

Proceedings Volume 6304, 63040C (2006) https://doi.org/10.1117/12.678259

KEYWORDS: Acquisition tracking and pointing, Receivers, Satellites, Laser communications, Collimators, Near field optics, Transmitters, Optical scanning, Optical simulations, Near field diffraction

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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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