Dr. Lei Liu Profile

Dr. Lei Liu

at National Univ of Defense Technology

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 17 April 2020 Paper

Numerical investigation on characteristics of filamentation by intense femtosecond positive temporal Airy pulses

Qingwei Zeng, Lei Liu, Jingjing Ju, Shuai Hu

Proceedings Volume 11455, 114554S (2020) https://doi.org/10.1117/12.2564986

KEYWORDS: Gaussian pulse, Femtosecond phenomena, Solids, Ionization, Oxygen, Laser applications, Plasma, Pulsed laser operation, Nonlinear optics, Kerr effect

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Proceedings Article | 17 April 2020 Paper

Influence to filamentation of femtosecond laser by atmospheric turbulence at wavelength of 400 nm

Kejin Zhang, Lei Liu, Qingwei Zeng, Taichang Gao, Ming Chen

Proceedings Volume 11455, 1145504 (2020) https://doi.org/10.1117/12.2557247

KEYWORDS: Femtosecond phenomena, Turbulence, Atmospheric propagation, Atmospheric turbulence, Laser beam propagation, Laser energy, Optical simulations

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Proceedings Article | 29 March 2019 Paper

Conical ring beam achieved via degenerated optical parametric generation in tightly focused quasi-phase matching conditions

Wei Zhao, Chuan Guo, Lingwei Zhao, Lei Liu, Hongyan Wang, Xiaojun Xu

Proceedings Volume 11046, 110460D (2019) https://doi.org/10.1117/12.2524397

KEYWORDS: Crystals, Nonlinear crystals, Laser crystals, Defense technologies, Optical tweezers, Nonlinear dynamics, Polarization, Optical filters, Beam shaping, Lithium niobate

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Proceedings Article | 29 March 2019 Paper

Mid-infrared upconversion imaging pumped by sub-nanosecond micro-cavity laser

Lingwei Zhao, Lei Liu, Wei Zhao, Chuan Guo, Hongyan Wang, Weihong Hua

Proceedings Volume 11046, 1104607 (2019) https://doi.org/10.1117/12.2523830

KEYWORDS: Mid-IR, Upconversion, Imaging systems, Crystals, Nonlinear crystals, Image resolution, Signal detection, Point spread functions, Polarization, Electron multiplying charge coupled devices

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Proceedings Article | 12 December 2018 Paper

Sum frequency generation of communication band pumped by sub-nanosecond micro-cavity laser

Lingwei Zhao, Lei Liu, Wei Zhao, Chuan Guo, Hongyan Wang, Weihong Hua

Proceedings Volume 10846, 1084605 (2018) https://doi.org/10.1117/12.2502418

KEYWORDS: Crystals, Sum-frequency generation, Polarization, Laser crystals, Continuous wave operation, Fiber lasers, Nonlinear frequency conversion, Nonlinear crystals, Light sources

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Proceedings Article | 15 November 2018 Paper

Upconversion of communication band light carrying orbital angular momentum using quasi-phase-matching

Lei Liu, Hongyan Wang, Yu Ning, Lingwei Zhao, Wei Zhao, Chuan Guo, Ge Ren

Proceedings Volume 10964, 109640D (2018) https://doi.org/10.1117/12.2504122

KEYWORDS: Upconversion, Optical communications, Crystals, Sum-frequency generation, Laser crystals, Beam splitters, CCD cameras, Lithium niobate, Spiral phase plates, Mirrors

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Proceedings Article | 5 November 2018 Paper

Mitigating stimulated brillouin scattering in fiber using tilted fiber Bragg grating

Meng Wang, Le Liu, Qihao Hu, Zefeng Wang, Xiaojun Xu

Proceedings Volume 10811, 108110C (2018) https://doi.org/10.1117/12.2500866

KEYWORDS: Scattering, Fiber Bragg gratings, Optical amplifiers, Fiber lasers, Optical filters, High power fiber amplifiers, Optical fibers

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Proceedings Article | 5 November 2018 Paper

Suppression of stimulated Raman scattering in a monolithic fiber laser oscillator using chirped and tilted fiber Bragg gratings

Meng Wang, Qihao Hu, Le Liu, Zefeng Wang, Xiaojun Xu

Proceedings Volume 10811, 108110V (2018) https://doi.org/10.1117/12.2500861

KEYWORDS: Oscillators, Fiber lasers, Fiber Bragg gratings, Raman scattering, Optical filters, Manufacturing

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SPIE Journal Paper | 14 November 2017

Side-pumping combiner for high-power fiber laser based on tandem pumping

Yanran Gu, Chengmin Lei, Jun Liu, Ruixian Li, Le Liu, Hu Xiao, Zilun Chen

OE, Vol. 56, Issue 11, 116109, (November 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.11.116109

KEYWORDS: Optical pumping, Fiber lasers, High power fiber lasers, Coating, Optical amplifiers, Signal attenuation, Fusion splicing, Fiber amplifiers, High power fiber amplifiers, Optical engineering

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Proceedings Article | 20 September 2016 Presentation + Paper

Adaptive compensation of a direct liquid-cooled solid-state MOPA system

Lizhi Dong, Shanqiu Chen, Xiaojun Chen, Wenjin Liu, Ke Hu, Boheng Lai, Ping Yang, Shuai Wang, Xing He, Bing Xu, Le Liu, Yang Liu, Zhe Wang, Gang Wang

Proceedings Volume 9982, 99820H (2016) https://doi.org/10.1117/12.2236823

KEYWORDS: Deformable mirrors, Solid state lasers, Adaptive optics, Optical amplifiers, Solid state physics, Wavefront sensors, Wavefronts, Cameras, Monochromatic aberrations, Nd:YAG lasers

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Proceedings Article | 3 February 2015 Paper

High power mid-infrared continuous-wave optical parametric oscillator pumped by fiber lasers

Xiaojun Xu, Xiao Li, Lei Liu, Yaping Shang

Proceedings Volume 9255, 925507 (2015) https://doi.org/10.1117/12.2066963

KEYWORDS: Optical parametric oscillators, Mid-IR, Fiber lasers, Continuous wave operation, Laser development, Polarization, Laser applications, Crystals, Remote sensing

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Proceedings Article | 7 October 2014 Paper

Study on high-power continuous-wave mid-infrared optical parametric oscillator

Xiao Li, Xiaojun Xu, Yaping Shang, Hongyan Wang, Lei Liu

Proceedings Volume 9251, 92510A (2014) https://doi.org/10.1117/12.2066961

KEYWORDS: Optical parametric oscillators, Mid-IR, Fiber lasers, Continuous wave operation, Laser applications, Laser development, Polarization, Crystals, Remote sensing

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Showing 5 of 12 publications

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