Thermal lensing effects for diode-end-pumped Nd:YVO4 and Nd:YAG lasers

被引：28

作者：

Peng, XY ^{[1
]}

Xu, L ^{[1
]}

Asundi, A ^{[1
]}

机构：

[1] Nanyang Technol Univ, Photon Programme, Singapore 639798, Singapore

来源：

OPTICAL ENGINEERING | 2004年 / 43卷 / 10期

关键词：

thermal lensing effects; Nd : YVO4; Nd : YAG; diode-pumped lasers;

D O I：

10.1117/1.1787529

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The thermal effects of diode-end-pumped Nd:YVO4 and Nd:YAG lasers are analyzed by a 2-D analytical model and a 3-D numerical model, respectively. The characteristics of the Nd:YVO4 and Nd:YAG rods are comparatively discussed, including temperature distributions and thermal lensing effects. The model quantitatively separates the end effect from the index parts. Under the same pump configuration, we find that the temperature increase in the Nd:YVO4 laser was 2 times larger than those in the Nd:YAG laser, while the thermal lensing coefficient of Nd:YAG was 27% higher than that of Nd:YVO4. We also conclude that a good roundness of the Nd:YVO4 laser beam profile is expected because nearly symmetric thermal lensing in the a and c axes is predicted from our modeling and measurement. Correspondingly, we perform experiments that are in good agreement with theoretical modeling for the thermal lensing of diode-pumped Nd:YVO4 and Nd:YAG lasers. (C) 2004 Society of Photo-Optical Instrumentation Engineers.

引用

页码：2454 / 2461

页数：8

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