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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·
In order to solve the thermal effect caused by end-pumped laser crystals in high power semiconductor lasers, the thermal deformation of laser crystal pumped end surfaces must be accurately calculated. By analyzing the operating characteristics of laser crystals in all-solid-state lasers, a rectangular section laser crystal heat Analytical Model Based on the heat conduction equation, a new solution of the Poisson equation is proposed and the general analytical expression of the thermal deformation distribution of the rectangular cross section laser crystal is obtained. The thermal deformation of the end face of the laser diode is also discussed. • Compared with FEA and other numerical analysis methods, the analytical method does not introduce any error into the calculation. • Analytical analysis of thermal deformation provides a theoretical basis for solving the thermal effect of laser crystals and improving the performance of lasers in accordance with·