Thermal compensation of a cw-pumped Nd:YAG laser

被引:26
作者
Sherman, J [1 ]
机构
[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
来源
APPLIED OPTICS | 1998年 / 37卷 / 33期
关键词
D O I
10.1364/AO.37.007789
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Thermally induced lensing and birefringence modify the transverse laser profile and may eliminate any global polarization state in systems utilizing Nd:YAG as a gain medium. This creates fundamental difficulties in obtaining a high-power, polarized output beam. Although abundant literature exists regarding thermal lensing, only one birefringence compensation scheme is prevalent in the literature. A modification of this scheme is given that eliminates residual:birefringence. Experimental data verify the model's validity. A theoretical model is then presented that modifies the birefringence-compensated amplifier as a single power-dependent lens. After showing that Solutions exist for a power-independent resonator consisting of a power-dependent lens between two fiat mirrors, this amplifier is inserted into the resonator solution to produce, to first order, a resonator that is insensitive to thermally induced fluctuations in the rod focal length. (C) 1998 Optical Society of America. OCIS codes: 140.6810, 260.1440, 140.3530.
引用
收藏
页码:7789 / 7796
页数:8
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