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Diode-pumped doubly Q-switched c-cut Nd:GdVO4 laserwith AO modulator and GaAs saturable absorber

Published online by Cambridge University Press:  12 July 2007

J. An ,
S. Zhao ,
G. Q. Li ,
K. Yang ,
D. Li ,
J. Wang ,
M. Li  and
W. Qiao
J. An*
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
S. Zhao
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
G. Q. Li
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
K. Yang
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
D. Li
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
J. Wang
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
M. Li
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
W. Qiao
Affiliation:
School of Information Science and Engineering, Shandong University, Jinan 250100, P.R. China
*
anjing@mail.sdu.edu.cn
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Abstract

Using both acoustic-optic (AO) modulator and GaAs saturable absorber in the same cavity, a diode-pumped doubly Q-switched c-cut Nd:GdVO4 laser has been realized. This laser can generate the more symmetric pulse with shorter pulse width in comparison with singly AO or GaAs Q-switched laser. We also made a comparison between c-cut and a-cut Nd:GdVO4 crystals and the experimental results shows that the doubly Q-switched c-cut Nd:GdVO4 laser can generate narrower pulse with higher peak power when the incident pump power higher than 3.4 W. The coupled rate equations, in which the spatial distributions of the intracavity photon density and the population-inversion density are taken into account, are introduced to theoretically analyze the experimental results, and the experimental results are in fair agreement with the numerical solutions.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 39 , Issue 3 , September 2007 , pp. 227 - 231
Copyright
© EDP Sciences, 2007

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