Effect of transit time on characteristics of the output pulse in an actively Q-switched Nd:YVO4 laser with acoustic-optic modulator

Haikun Zhang; Xiufeng Chen; Feng Yu; Zhongshi Zhang; Shengzhi Zhao

doi:10.1117/12.823388

18 February 2009 Effect of transit time on characteristics of the output pulse in an actively Q-switched Nd:YVO₄ laser with acoustic-optic modulator

Haikun Zhang, Xiufeng Chen, Feng Yu, Zhongshi Zhang, Shengzhi Zhao

Author Affiliations +

Proceedings Volume 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications; 72761I (2009) https://doi.org/10.1117/12.823388
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

By considering the AO switch as a low speed switch and the AO turnoff time including the transit time of the acousticwave and the electronic turnoff time as well as the Gaussian spatial distribution of the intra-cavity photon density, the coupled equations of a Laser-diode pumped actively Q-switched Nd:YVO4 laser with acoustic-optic modulator are given. By changing the position of AO in the cavity for changing the transit time of the acoustic-wave, the effect of the AO transit time on the characteristics of the output Q-switched pulse is obtained. It is show that the longer transit time leads to the wider pulse duration. In the experiment, a laser-diode-pumped actively Q-switched Nd:YVO₄ laser with acoustic-optic modulator is realized, and the experimental results are in fair agreement with the numerical solutions.

Citation Download Citation

Haikun Zhang, Xiufeng Chen, Feng Yu, Zhongshi Zhang, and Shengzhi Zhao "Effect of transit time on characteristics of the output pulse in an actively Q-switched Nd:YVO₄ laser with acoustic-optic modulator", Proc. SPIE 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications, 72761I (18 February 2009); https://doi.org/10.1117/12.823388

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KEYWORDS

Modulators

Q switched lasers

Acousto-optics

Neodymium lasers

Q switching

Pulsed laser operation

Switches

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