Pulse-width reduction in a diode-pumped doubly Q-switched YVO4/Nd:YVO4 laser with electro-optic modulator and GaAs saturable absorber

被引:15
|
作者
Li, Tao [1 ]
Zhao, Shengzhi [1 ]
Zhuo, Zhuang [1 ]
Yang, Kejian [1 ]
Li, Guiqiu [1 ]
Li, Dechun [1 ]
机构
[1] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Shandong, Peoples R China
基金
美国国家科学基金会;
关键词
TRANSIENT ENERGY-TRANSFER; ND-YVO4; LASER; FIBER LASER; YAG LASER; SYMMETRY; CR4+-YAG; SHAPE; AO; ND;
D O I
10.1364/JOSAB.26.001146
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
By using both a beta-BaB2O4 (BBO) electro-optic (EO) modulator and a GaAs saturable absorber, a laser-diode (LD) end-pumped doubly Q-switched YVO4/Nd:YVO4 laser is realized. A symmetric factor is defined to describe the temporal symmetry of output pulses. At 20 W incident pump power, a symmetric factor of 1.04 is obtained by the doubly Q-switched laser with 2.5 ns pulse width and 300 kW peak power. The experimental results show that the double Q-switching can generate a symmetric and shorter pulse with higher peak power in comparison with the single EO Q-switching. In order to explain these results, a rate equation model has been developed, and it leads to good agreement with the experimental data. (C) 2009 Optical Society of America
引用
收藏
页码:1146 / 1150
页数:5
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