Prof. Kejian Yang Profile

Prof. Kejian Yang

at Shandong Univ

SPIE Involvement:

Author

Publications (13)

SPIE Journal Paper | 23 September 2021

Modified Frantz–Nodvik equation for CW end-pumped high-repetition-rate picosecond laser amplifier

Bingnan Shi, Jiatong Li, Shuai Ye, Feifei Wang, Jiajia Mao, Xiaohui Sun, Hongkun Nie, Kejian Yang, Baitao Zhang, Jingliang He

OE, Vol. 60, Issue 09, 096106, (September 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.9.096106

KEYWORDS: Picosecond phenomena, Optical amplifiers, Continuous wave operation, Amplifiers, Fiber amplifiers, Crystals, Optical engineering, Fiber lasers, Optical simulations, Laser crystals

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SPIE Journal Paper | 29 June 2018

Liquid-phase exfoliated semiconducting single-walled carbon nanotubes as a saturable absorber for passively Q-switched laser

Xiaodong Zhang, Shengzhi Zhao, Ying Li, Yan Zhang, Dechun Li, Kejian Yang

JNP, Vol. 12, Issue 02, 026020, (June 2018) https://doi.org/10.1117/12.10.1117/1.JNP.12.026020

KEYWORDS: Q switched lasers, Semiconductors, Single walled carbon nanotubes, Pulsed laser operation, Absorption, Semiconductor lasers, Lithium, Raman spectroscopy, Quartz, Saturable absorption

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SPIE Journal Paper | 5 June 2018

Soliton mode-locking and nonlinearity characterization of Yb3+:Y2SiO5 crystal

Yandang Wang, Kejian Yang, Shengzhi Zhao, Ming Li, Tao Li, Wenchao Qiao, Shande Liu, Xiancui Su, Baitao Zhang, Jingliang He, Lihe Zheng, Liangbi Su, Jun Xu

OE, Vol. 57, Issue 06, 066101, (June 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.6.066101

KEYWORDS: Mode locking, Solitons, Crystals, Laser crystals, Mirrors, Ytterbium, Nonlinear crystals, Pulsed laser operation, Refractive index, Scanning probe microscopy

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Proceedings Article | 9 December 2014 Paper

First principles study on optical properties of GaAs saturable absorbers with native defects

Wen Cong, Dechun Li, Shengzhi Zhao, Guiqiu Li, Kejian Yang

Proceedings Volume 9294, 92940M (2014) https://doi.org/10.1117/12.2069771

KEYWORDS: Gallium arsenide, Crystals, Absorption, Refractive index, Optical properties, Dielectrics, Chemical species, Gallium, Laser crystals, Lithium

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Proceedings Article | 20 November 2014 Paper

First-principles study on the effects of the intrinsic defects in GaAs saturable absorber

Xiaoyang Ma, Dechun Li, Shengzhi Zhao, Wen Cong, Guiqiu Li, Kejian Yang

Proceedings Volume 9300, 930009 (2014) https://doi.org/10.1117/12.2069808

KEYWORDS: Gallium arsenide, Chemical species, Gallium, Lithium, Q switches, Arsenic, Electrons, Doping, Information science, Saturable absorption

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SPIE Journal Paper | 2 August 2012

Optimization of diode-pumped doubly Q-switched mode-locked laser with acousto-optic modulator and Cr4+∶YAG saturable absorber

Tianli Feng, Shengzhi Zhao, Dechun Li, Guiqiu Li, Kejian Yang, Gang Zhang, Kang Cheng

OE, Vol. 51, Issue 8, 084202, (August 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.8.084202

KEYWORDS: Modulators, YAG lasers, Semiconductor lasers, Chromium, Adaptive optics, Mode locking, Q switched lasers, Modulation, Mirrors, Reflectivity

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SPIE Journal Paper | 1 July 2011

Performance of doubly Q-switched and mode-locked Nd:LuVO₄ laser with acousto-optic modulator and GaAs saturable absorber

Gang Zhang, Shengzhi Zhao, Yufei Li, Guiqiu Li, Dechun Li, Kejian Yang, Kang Cheng, Zhenggang Yu

OE, Vol. 50, Issue 07, 074202, (July 2011) https://doi.org/10.1117/12.10.1117/1.3599872

KEYWORDS: Mode locking, Adaptive optics, Modulators, Gallium arsenide, Q switched lasers, Q switching, Modulation, Pulsed laser operation, Absorption, Acousto-optics

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SPIE Journal Paper | 1 May 2008

Simple way to optimize the pulse duration of diode-pumped passively Q-switched laser

Kejian Yang, Shengzhi Zhao, Guiqiu Li, Dechun Li, Jingliang He

OE, Vol. 47, Issue 05, 054201, (May 2008) https://doi.org/10.1117/12.10.1117/1.2919790

KEYWORDS: Q switched lasers, Gallium arsenide, Laser crystals, Mirrors, Crystals, Semiconducting wafers, Semiconductor lasers, Pulsed laser operation, Thermal effects, Transmission electron microscopy

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SPIE Journal Paper | 1 May 2007

Laser-diode-pumped, doubly Q-switched, intracavity optical parametric oscillator considering Gaussian distribution of intracavity photon densities

Jing Wang, Shengzhi Zhao, Guiqiu Li, Kejian Yang, De-chun Li, Jing An, Ming Li

OE, Vol. 46, Issue 05, 054202, (May 2007) https://doi.org/10.1117/12.10.1117/1.2737448

KEYWORDS: Optical parametric oscillators, Q switched lasers, Ferroelectric materials, Crystals, Acousto-optics, Modulators, Laser crystals, Q switching, Adaptive optics, Optical engineering

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SPIE Journal Paper | 1 December 2006

Doubly passively Q-switched intracavity-frequency-doubling Nd³⁺:YAG/KTP green laser with GaAs and Cr⁴⁺:YAG saturable absorbers

Jing An, Shengzhi Zhao, Guiqiu Li, Kejian Yang, Yuming Sun, De-chun Li, Jing Wang, Ming Li

OE, Vol. 45, Issue 12, 124202, (December 2006) https://doi.org/10.1117/12.10.1117/1.2404903

KEYWORDS: Q switched lasers, Chromium, YAG lasers, Gallium arsenide, Pulsed laser operation, Q switches, Neodymium, Ferroelectric materials, Q switching, Crystals

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SPIE Journal Paper | 1 November 2005

Modeling of a diode-pumped acousto optically Q-switched intracavity doubling Nd:GdVO₄/KTP green laser

Kejian Yang, Shengzhi Zhao, Guiqiu Li, Jing Zou, Peng Song, De-chun Li, Wei Wu

OE, Vol. 44, Issue 11, 114203, (November 2005) https://doi.org/10.1117/12.10.1117/1.2130334

KEYWORDS: Q switched lasers, Ferroelectric materials, Semiconductor lasers, Q switching, Crystals, Modulators, Adaptive optics, Acousto-optics, Laser crystals, Acoustics

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SPIE Journal Paper | 1 March 2005

Compression of the pulse width in a diode-pumped Nd:YVO₄ laser with double Q-switches

Guiqiu Li, Shengzhi Zhao, Kejian Yang

OE, Vol. 44, Issue 03, 034204, (March 2005) https://doi.org/10.1117/12.10.1117/1.1870572

KEYWORDS: Q switched lasers, Semiconductor lasers, Adaptive optics, Q switches, YAG lasers, Chromium, Modulators, Pulsed laser operation, Crystals, Bragg cells

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SPIE Journal Paper | 1 November 2004

Theoretical and experimental study of a laser diode end-pumped passively Q-switched Nd:YVO₄ laser with Cr⁴⁺:YAG saturable absorber

Guiqiu Li, Shengzhi Zhao, Kejian Yang, Hongming Zhao

OE, Vol. 43, Issue 11, (November 2004) https://doi.org/10.1117/12.10.1117/1.1797831

KEYWORDS: Q switched lasers, Chromium, YAG lasers, Semiconductor lasers, Solids, Pulsed laser operation, Numerical analysis, Crystals, Mirrors, Laser resonators

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Showing 5 of 13 publications

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