摘要
建立了从棒状放大器能量沉积分布研究其热畸变理论的计算机模拟程序.可以计算棒状放大器泵浦期间和泵浦结束之后冷却过程中激光棒内的温度分布、应力分布、折射率分布以及激光束的退偏量、平均光束发散角和位相畸变.用哈特曼网格法测量了氙灯泵浦对激光波面的影响以及放大器的冷却过程.测量结果与计算结果一致.
A mode] program is established to investigate the thermal distortion of the Nd : glass rod amplifier from its deposited energy distribution. This program can be used to calculate the temperature profile, stresses distribution, refractive index distribution, depolarization and phase aberration during the pumping and the cooling down processes. The influence of the pumping on laser wavefront has been measured with a Hartmann wavefront sensor. Meanwhile, the transient temperature profile has also been measured by the Hartmann wavefront sensor. The experiment is in good agreement with the calculation.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1997年第12期1061-1067,共7页
Chinese Journal of Lasers
基金
国家高技术863-416主题资助项目
关键词
固体激光系统
泵浦
热畸变
激光棒
棒状放大器
temperature profile, stresses distribution, refractive index distribution, depolarization, phase aberration
