In the paper, a mathematical model was systematically constructed to evaluate the amplified spontaneous emission (ASE) effects and temperature distribution of a vapor cell of the V-pumped thin-disk alkali lasers. There have been few literatures on studying ASE in a diode-pumped alkali laser (DPAL) although such a phenomenon is normally serious especially in a thin-disk configuration. By reducing the number of the outputted conditions and adopting a parallel computation algorithm, the computation speed has been demonstrated to be greatly improved by comparing to the method we ever used before. The results show that the ASE effects in a thin-disk DPAL cannot be ignored especially when the size of a pump beam becomes big. It has also been proved that ASE in a thin-disk DPAL tightly relates to the pump power, thickness and temperature of a thin-disk cell, and reflectivity of the output coupler (OC). The calculation approaches in this paper are thought to be valuable in the design of a high-powered DPAL and can also be applied to the other kinds of high-powered lasers.

在论文中，系统地构建了一个数学模型来评估 V 型泵浦薄盘碱性激光器的蒸汽室的放大自发辐射 (ASE) 效应和温度分布。尽管这种现象通常很严重，尤其是在薄盘配置中，但关于研究二极管泵浦碱性激光器 (DPAL) 中的 ASE 的文献很少。通过减少输出条件的数量并采用并行计算算法，与我们以前使用的方法相比，计算速度得到了极大的提高。结果表明，特别是当泵浦光束变大时，薄盘 DPAL 中的 ASE 效应不可忽视。也已证明薄盘 DPAL 中的 ASE 与泵浦功率密切相关，薄盘单元的厚度和温度，以及输出耦合器 (OC) 的反射率。本文中的计算方法被认为对高功率 DPAL 的设计很有价值，也可以应用于其他类型的高功率激光器。