物理学报Issue(8)：1-9,9.DOI:10.7498/aps.64.087801
激光二极管抽运氦气冷却钕玻璃叠片激光放大器热致波前畸变和应力双折射的数值模拟和实验研究
Theoretical and exp erimental investigations on wavefront distortion and thermal-stress induced birefringence in a laser dio de pump ed helium gas-co oled multislab Nd:glass laser amplifier
黄文发 1李学春 1王江峰 1卢兴华 1张玉奇 1范薇 1林尊琪1
作者信息
- 1. 中国科学院上海光学精密机械研究所，高功率激光物理联合实验室，上海 201800
- 折叠
摘要
Abstract
Thermal effect is still the most serious problem: it restricts the high power and high beam quality of solid laser to be further enhanced. The efficient thermal management is an important approach to suppress the thermal effect. In this paper, the thermal effect in a gas-cooled laser diode pumped multislab Nd:glass amplifier operating at a repetition rate is investigated in detail both theoretically and experimentally. The three-dimensional distributions of temperature, stress, strain, and birefringence are calculated by a finite element analysis. Based on these data, the thermally induced wavefront distortions and depolarization losses are determined with considering six slabs and one laser head. It is revealed that the theoretical data are in good agreement with the experimental results: the total wavefront distortion is 6.77λand a depolarization loss of more than 90%accumulates over six slabs when the heat deposition is 0.7 W/cm3.关键词
激光二极管抽运/热效应/氦气冷却/钕玻璃激光放大器Key words
laser diode pump/thermal effect/helium gas-cooled/Nd:glass laser amplifier引用本文复制引用
黄文发,李学春,王江峰,卢兴华,张玉奇,范薇,林尊琪..激光二极管抽运氦气冷却钕玻璃叠片激光放大器热致波前畸变和应力双折射的数值模拟和实验研究[J].物理学报,2015,(8):1-9,9.
