Dr. Fangjie Li Profile

Dr. Fangjie Li

at Tianjin Univ

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 27 November 2023 Paper

Polarization self-modulation of the coaxial diode-end-pumped orthogonally polarized laser induced by an intracavity waveplate

Yizhe Zheng, Kai Zhong, Hongzhan Qiao, Xianzhong Zhang, Fangjie Li, Tana Gegen, Xinqi Li, Jing Chi, Yuxin Liu, Jining Li, Degang Xu, Jianquan Yao

Proceedings Volume 12760, 1276005 (2023) https://doi.org/10.1117/12.2687334

KEYWORDS: Polarization, Semiconductor lasers, Wave plates, Neodymium lasers, Physical coherence, Q switched lasers, Precision measurement, Polarization control, Optical resonators, Matrices

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Proceedings Article | 27 November 2023 Paper

Pulse-jitter reduction in passively Q-switched Nd:YAG/Cr:YAG microchip lasers by injection seeding actively Q-switched laser pulses

Jing Chi, Kai Zhong, Hongzhan Qiao, Yue Sun, Fangjie Li, Yizhe Zheng, Xinqi Li, Yuxin Liu, Degang Xu, Jianquan Yao

Proceedings Volume 12760, 1276009 (2023) https://doi.org/10.1117/12.2687190

KEYWORDS: Q switched lasers, Pulsed laser operation, Pulse signals, Nanosecond lasers, Transmittance, Electro optics

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Proceedings Article | 4 January 2023 Poster + Paper

Study of broadband second harmonic generation based on random quasi-phase matching

Sijia Wang, Kai Zhong, Fangjie Li, Hongzhan Qiao, Xianzhong Zhang, Yizhe Zheng, Xinqi Li, Tana Gegen, Jining Li, Degang Xu, Jianquan Yao

Proceedings Volume 12323, 1232308 (2023) https://doi.org/10.1117/12.2642211

KEYWORDS: Second-harmonic generation, Harmonic generation, Crystals, Fourier transforms, Statistical modeling, Mathematical modeling

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Proceedings Article | 28 December 2022 Presentation + Paper

Study on pulse jitter of passively Q-switched Nd:YAG/Cr:YAG microchip laser

Hongzhan Qiao, Kai Zhong, Fangjie Li, Xianzhong Zhang, Sijia Wang, Yizhe Zheng, Tana Gegen, Xinqi Li, Degang Xu, Jianquan Yao

Proceedings Volume 12310, 123100F (2022) https://doi.org/10.1117/12.2642087

KEYWORDS: Q switched lasers, Pulsed laser operation, Crystals, Q switches, Optical simulations

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Proceedings Article | 28 December 2022 Presentation + Paper

Gain-self-balanced coaxial-end-pumped orthogonally polarized laser with high coherence and good beam quality

Yizhe Zheng, Kai Zhong, Hongzhan Qiao, Xianzhong Zhang, Fangjie Li, Sijia Wang, Tana Gegen, Xinqi Li, Degang Xu, Jianquan Yao

Proceedings Volume 12310, 123100X (2022) https://doi.org/10.1117/12.2642092

KEYWORDS: Polarization, Mode locking, Crystals, Wave plates, Thermal effects, Switching, Prisms, Laser crystals, Optical testing, Neodymium lasers

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Proceedings Article | 28 December 2022 Presentation + Paper

A passively Q-switched dual-wavelength laser with pulsed LD coaxial end-pumped configuration

Xianzhong Zhang, Kai Zhong, Hongzhan Qiao, Yizhe Zheng, Fangjie Li, Degang Xu, Jianquan Yao

Proceedings Volume 12310, 123100C (2022) https://doi.org/10.1117/12.2641747

KEYWORDS: Pulsed laser operation, Q switched lasers, Laser crystals, Crystals, Optical pumping, Q switches, Optical simulations

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Proceedings Article | 16 December 2022 Presentation + Paper

Perfect phase matching regulation in cubic semiconductors based on linear electro-optic effect

Fangjie Li, Kai Zhong, Hongzhan Qiao, Xianzhong Zhang, Degang Xu, Jianquan Yao

Proceedings Volume 12324, 123240D (2022) https://doi.org/10.1117/12.2642113

KEYWORDS: Crystals, Phase modulation, Nonlinear crystals, Terahertz radiation, Refractive index, Polarization, Difference frequency generation, Electro optics, Birefringence, Modulation

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Proceedings Article | 9 October 2021 Poster + Paper

Widely tunable eye-safe optical parametric oscillation in an x-cut KTP crystal with noncollinear confocal pumping

Fangjie Li, Kai Zhong, Hongzhan Qiao, Xianzhong Zhang, Degang Xu, Jianquan Yao

Proceedings Volume 11905, 1190510 (2021) https://doi.org/10.1117/12.2600686

KEYWORDS: Optical parametric oscillators, Ferroelectric materials, Crystals, Wavelength tuning, Nonlinear crystals, Mirrors, Scanners, Nd:YAG lasers, Laser crystals, Energy efficiency

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Proceedings Article | 9 October 2021 Poster + Paper

High-peak-power, high-efficiency, widely tunable sub-nanosecond optical parametric generator based on PPMgLN

Hongzhan Qiao, Kai Zhong, Fangjie Li, Xianzhong Zhang, Sijia Wang, Yizhe Wang, Quan Sheng, Wei Shi, Degang Xu, Jianquan Yao

Proceedings Volume 11905, 119050R (2021) https://doi.org/10.1117/12.2599194

KEYWORDS: Crystals, Picosecond phenomena, Continuous wave operation, Semiconductor lasers, Laser crystals, Wavelength tuning, Optical testing, Nd:YAG lasers, Q switched lasers, Optical pumping

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Proceedings Article | 9 October 2021 Paper

Difference frequency generation of widely tunable terahertz waves in 4H-SiC

Tana Gegen, Fangjie Li, Kai Zhong, Hongzhan Qiao, Xianzhong Zhang, Degang Xu, Jianquan Yao

Proceedings Volume 11906, 119060H (2021) https://doi.org/10.1117/12.2599413

KEYWORDS: Terahertz radiation, Silicon carbide, Nonlinear crystals, Polarization, Absorption, Difference frequency generation, Laser damage threshold, Nonlinear optics

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Proceedings Article | 9 October 2021 Poster + Paper

A dual-wavelength laser at 1064 nm and 1080 nm with tunable power ratio by varying the pump wavelength

Xianzhong Zhang, Kai Zhong, Hongzhan Qiao, Yizhe Zheng, Fangjie Li, Degang Xu, Jianquan Yao

Proceedings Volume 11890, 1189010 (2021) https://doi.org/10.1117/12.2599587

KEYWORDS: Laser crystals, Crystals, Continuous wave operation, Absorption, Optical simulations, Optical pumping, Semiconductor lasers, Nd:YAG lasers, Laser applications

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SPIE Journal Paper | 10 August 2021

Theory and experiments of a power-ratio tunable dual-wavelength Nd:YVO₄/Nd:GdVO₄ laser by varying the pump wavelength

Xianzhong Zhang, Kai Zhong, Hongzhan Qiao, Yizhe Zheng, Fangjie Li, Degang Xu, Jianquan Yao

OE, Vol. 60, Issue 08, 086103, (August 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.8.086103

KEYWORDS: Crystals, Laser crystals, Absorption, Continuous wave operation, Semiconductor lasers, Tunable lasers, Optical pumping, Optical engineering, Optical simulations, Neodymium

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Proceedings Article | 10 October 2020 Presentation + Paper

Efficient tunable terahertz generation via noncollinear phase matching in ZnGeP2 crystal

Fangjie Li, Kai Zhong, Hongzhan Qiao, Kefei Liu, Xianzhong Zhang, Degang Xu, Jianquan Yao

Proceedings Volume 11559, 1155907 (2020) https://doi.org/10.1117/12.2573257

KEYWORDS: Difference frequency generation, Phase matching, Crystals, Absorption, Nonlinear crystals, Laser damage threshold, Wave propagation, Wavelength tuning, Laser crystals, Terahertz radiation

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Proceedings Article | 10 October 2020 Presentation + Paper

Nonlinear conversion efficiency of random quasi-phase matching in polycrystal influenced by grain morphological properties

Kefei Liu, Kai Zhong, Xianzhong Zhang, Fangjie Li, Degang Xu, Jianquan Yao

Proceedings Volume 11558, 1155805 (2020) https://doi.org/10.1117/12.2573264

KEYWORDS: Second-harmonic generation, Nonlinear frequency conversion, Femtosecond phenomena, Monte Carlo methods, Computer simulations, Harmonic generation, Materials processing

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Proceedings Article | 10 October 2020 Presentation + Paper

Large-dynamic-range RCS measurements at high terahertz frequency range

Hongzhan Qiao, Kai Zhong, Jie Shi, Kefei Liu, Fangjie Li, Xianzhong Zhang, Degang Xu, Jianquan Yao

Proceedings Volume 11559, 115590F (2020) https://doi.org/10.1117/12.2573255

KEYWORDS: Radar, Terahertz radiation, Sensors, Signal detection, Metals, Optical spheres, Data modeling, Terahertz sources, Gas lasers, Near field

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Showing 5 of 15 publications

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