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Dive into the research topics where Pengfei Sha is active.

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Featured researches published by Pengfei Sha.


Laser Physics | 2009

A laser-diode-pumped acoustic-optic Q-switched Nd:YVO4 slab laser with a hybrid resonator

Ying Yan; Hengli Zhang; Xinhong Yu; Pengfei Sha; Yang Liu; J. Li; Jianguo Xin

A 32.1 W laser-diode-stack pumped acoustic-optic Q-switched Nd:YVO4 slab laser with hybrid resonator at 1064 nm was demonstrated with the pumping power of 112 W and repetition rate of 40 kHz, the pulse duration was 32.47 ns. The slope efficiency and optical-to-optical efficiency were 37 and 28.7%, respectively. At the repetition rate of 20 kHz and pumping power of 90 W, the average output power and pulse duration were 20.4 W and 20.43 ns, respectively. With the pumping power of 112 W, the beam quality M2 factors in CW operation were measured to be 1.3 in stable direction and 1.6 in unstable direction.


Laser Physics | 2011

880 nm laser-diode end-pumped Nd:YVO4 slab laser at 1342 nm

Li Cui; Hengli Zhang; Liu Xu; Jing Li; Ying Yan; Pengfei Sha; Liping Fang; H. J. Zhang; J. L. He; Jianguo Xin

Abstract43.6 W near-diffraction-limited continuous-wave laser beam at 1342 nm in 880 nm laser-diode partially end-pumped Nd:YVO4 slab laser is presented. The slope efficiency and optical-to-optical efficiency with respect to absorbed pumping power were 45.4% and 35.9%, respectively. At output power of 34.5 W, the M2 factors in unstable and stable directions were 1.3 and 1.2, respectively.


Laser Physics | 2010

A high beam quality laser-diode end-pumped Nd:GdVO4 slab laser

Ying Yan; Hengli Zhang; Pengfei Sha; Li Cui; R. N. Li; Xin Lin; H. J. Zhang; J. L. He; Jianguo Xin

An 83 W, near-diffraction-limited LD end-pumped Nd:GdVO4 slab laser with hybrid resonator was presented with the pumping power of 238 W, the slope efficiency and optical-to-optical conversion efficiency were 39.4 and 34.9%, respectively. At the output power of 70 W, beam quality M2 factors were 1.2 in stable direction and 1.3 in unstable direction.


Optics Letters | 2010

In-phase coupled single-mode gain waveguide array laser.

Pengfei Sha; Jianguo Xin; Liping Fang; Zhengfan Liu; Ying Zhou; Hengli Zhang; Songlin Yu; Jianguo Wen

We utilize a sliced slab waveguide structure to produce a gain waveguide array. With this array, an in-phase locked single-mode frequency output with a single-peak intensity distribution without sidelobes and a highly spatially suppressed far-field distribution has been obtained.


Archive | 2011

Mixed cooling laser diode pumping slab laser

Hengli Zhang; Ying Yan; Pengfei Sha; Jing Li; Xin Lin; Jianguo Xin


Optics Communications | 2009

End-pumped 20.2-W Nd:YVO4 cw slab laser at 1342 nm with a hybrid resonator

Ying Yan; Hengli Zhang; Yang Liu; Jing Li; Pengfei Sha; Jingliang He; Huaijin Zhang; Jianguo Xin


Archive | 2009

Gain module of mixed cooling laser diode pumping slab

Hengli Zhang; Ying Yan; Pengfei Sha; Jing Li; Xin Lin; Jianguo Xin


Archive | 2008

Wideband adjustable laser in shape of batten

Hengli Zhang; Ying Yan; Yanhua Wang; Yang Liu; Pengfei Sha; Jichuan Xing; Jianguo Xin


Archive | 2008

Broadband tunable laser parametric oscillator

Hengli Zhang; Ying Yan; Yanhua Wang; Yang Liu; Pengfei Sha; Jichuan Xing; Jianguo Xin


Optics Communications | 2011

High-power continuous-wave Nd:GdVO4 slab laser pumped directly into the 4F3/2 emitting level

Li Cui; Hengli Zhang; Jing Li; Abdul Raof; Ying Yan; Liu Xu; Pengfei Sha; Liping Fang; Huaijin Zhang; Jingliang He; Jianguo Xin

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Ying Yan

Beijing Institute of Technology

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Hengli Zhang

Beijing Institute of Technology

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Jianguo Xin

Beijing Institute of Technology

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Jing Li

Beijing Institute of Technology

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Yang Liu

Beijing Institute of Technology

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Jichuan Xing

Beijing Institute of Technology

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Li Cui

Beijing Institute of Technology

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Liping Fang

Beijing Institute of Technology

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Xin Lin

Beijing Institute of Technology

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