Thermal Effect of Nd:YVO4 by Laser Diode End-Pumped

被引：0
|
作者：
Zheng Yibo [1 ]
Zhang Lei [3 ]
Jia Liping [2 ]
Kang Junjian [1 ,2 ]
机构：
[1] Shijiazhuang Univ Econ, Inst Opt & Elect, Shijiazhuang 050031, Hebei, Peoples R China
[2] Shijiazhuang Univ Econ, Key Lab Photoelect Informat & Earth Detect Techno, Hebei 050031, Peoples R China
[3] Shijiazhuang Univ Econ, Expt & Practice Teaching Ctr, Hebei 050031, Peoples R China
来源：
2008 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY: OPTICAL SYSTEMS AND OPTOELECTRONIC INSTRUMENTS | 2009年 / 7156卷
关键词：
laser technique; end-face deformation; thermal effect; Possion equation; ND:YVO4 crystal;
D O I：
10.1117/12.807052
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Based on Possion equation, a thermal conduct model of laser crystal was established. The temperature distribution in laser crystal were obtained, and the optics path difference(OPD) induced by end-face distortion and total OPD were caculated. Based on the calculation, the focal length of laser crystal with different pumping powers was obtained. The experimental result agrees with the caculated result very well. When the pumping power is 2 W and the radius of pumping beams is 320 mu m, the OPD induced by end-face distortion is 36% of the toatal OPD for ND:YVO4 crystal. When the pumping power is 5W, the focal length of crystal is 29.7mm. The study shows that, for the solid-stste laser with high power, the OPD induced by end-face distortion has a large influence on theraml effect of laser crystal. This study provides a theoretical direction for improving the stability of laser and studying the thermal effect of laser crystal.
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页数：8
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