An energy adjustable linearly polarized passively Q-switched bulk laser with a wedged diffusion-bonded Nd:YAG/Cr4+:YAG crystal

被引：11
作者：
Cho, C. Y. [1 ]
Cheng, H. P. [1 ]
Chang, Y. C. [1 ]
Tang, C. Y. [1 ]
Chen, Y. F. [1 ,2 ]
机构：
[1] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30050, Taiwan
[2] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu 30050, Taiwan
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 06期
关键词：
CR4+-YAG SATURABLE ABSORBER; HIGH-PEAK POWER; MICROCHIP LASER; UV LASER; YAG; COMPOSITE; OPTIMIZATION; NM;
D O I：
10.1364/OE.23.008162
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An energy adjustable passively Q-switched laser is demonstrated with a composite Nd:YAG/Cr4+:YAG crystal by applying a wedged interface inside the crystal. The theoretical model of the monolithic laser resonator is explored to show the energy adjustable feature with different initial transmissions of the saturable absorber at the horizontal axis. By adjusting the pump beam location across the Nd: YAG crystal, the output pulse energy can be flexibly changed from 10.9 mu J to 17.6 mu J while maintaining the same output efficiency. The polarization state of the laser output is found to be along with the polarization of the C-mount pump diode. Finally, the behavior of the multi-transverse-mode oscillation is also discussed for eliminating the instability of the pulse train. (C) 2015 Optical Society of America
引用
收藏
页码：8162 / 8169
页数：8
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