Thermal effects and their mitigation in end-pumped solid-state lasers

被引：185
|
作者：
Clarkson, WA [1 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2001年 / 34卷 / 16期
关键词：
D O I：
10.1088/0022-3727/34/16/302
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Degradation in beam quality due to aberrated thermal lensing and depolarization loss due to stress induced birefringence in end-pumped edge-cooled solid-state lasers are investigated. A simple model for the dependence of thermal lensing and degradation in beam quality on the transverse intensity profile of the pump beam is presented. Experimental measurements of thermal lensing, degradation in beam quality and depolarization loss in a diode-bar-end-pumped Nd:YAG rod support the main predictions of the model and, in addition, show that there can be significant extra heating under non-lasing conditions compared to lasing conditions. The role of energy transfer upconversion as a mechanism for additional heat loading under non-lasing conditions is considered. Finally, various strategies for limiting the impact of thermal lensing and thermally induced birefringence on laser performance in simple end-pumped cavity configurations are reviewed.
引用
收藏
页码：2381 / 2395
页数：15
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