CAJ | 학술논문

为了解决高功率半导体激光器端面泵浦激光晶体引起的热效应问题,激光晶体泵浦端面的热形变必须进行准确的计算.通过对于全固态激光器中激光晶体的工作特点分析,建立了矩形截面激光晶体热分析模型.基于热传导方程,提出了泊松方程的一种新解,并获得了矩形截面激光晶体端面热形变分布的一般解析表达式.同时讨论了半导体激光器偏心泵浦激光晶体给端面热形变带来的影响.与有限元分析方法以及其他数值分析方法相比,解析分析方法不会给计算引入任何的误差.热形变的解析分析为解决激光晶体的热效应问题以及提高激光器的性能提供了理论的依据.
위료해결고공솔반도체격광기단면빙포격광정체인기적열효응문제,격광정체빙포단면적열형변필수진행준학적계산.통과대우전고태격광기중격광정체적공작특점분석,건립료구형절면격광정체열분석모형.기우열전도방정,제출료박송방정적일충신해,병획득료구형절면격광정체단면열형변분포적일반해석표체식.동시토론료반도체격광기편심빙포격광정체급단면열형변대래적영향.여유한원분석방법이급기타수치분석방법상비,해석분석방법불회급계산인입임하적오차.열형변적해석분석위해결격광정체적열효응문제이급제고격광기적성능제공료이론적의거.
In order to solve thermal effect of laser crystal induced by high power diode laser end-pumped, the thermal deformation on pump face of laser crystal was exactly calculated. Through work characteristic analysis of laser crystal in diode laser end-pumped all-solid-state lasers, a thermal model of rectangle laser crystal was built. Based on the heat conductive equation, a new solution of Poisson equation was introduced and the general analytical expression of thermal deformation of rectangle laser crystal was obtained. And thermal deformation influenced by diode laser eccentric-end-pumped was investigated. Compared to the finite-element analysis or other numerical solutions, the analytical solution will not produce any calculation error. The analytical solution of thermal deformation will supply a theoretical instruct for solving thermal effect of laser crystal and improving the performance of lasers.