Thermal Effects in Nd:YAG Slabs: 3D Modelling and Comparison with Experiments
Thermal Effects in Nd:YAG Slabs: 3D Modelling and Comparison with Experiments
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Nd:YAG 板中的热效应：3D 建模以及与实验的比较
DOI：
10.1080/09500349414551321
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发表时间：
1994
影响因子：
1.3
通讯作者：
C. Man
中科院分区：
文献类型：
--
作者：
P. Hello;E. Durand;P. Fritschel;C. Man
摘要 在二极管泵浦板条固体激光器的设计中，当尝试在 TEM00 模式下实现高输出功率时，了解介质中的温度分布和热透镜效应非常重要。给出了由许多激光二极管侧面泵浦的有限尺寸板中的温度分布的一般 3D 分析计算；考虑了泵浦功率的空间分布。根据温度分布计算近似的热焦距。冷却板坯的三种不同方式被视为边界条件并包含在模型中。我们得出每种冷却情况下热量分布的通用解决方案。模型的测试包括应用于我们的板坯原型的数值计算，并与实验测量进行比较。
Abstract In the design of a diode-pumped slab solid-state laser, the knowledge of the temperature distribution and the thermal lensing in the medium is very important when attempting to achieve high output power in the TEM00 mode. A general 3D analytical calculation is given of the temperature distribution in a slab of finite size, side-pumped by many laser diodes; the spatial distribution of the pump power is taken into account. An approximate thermal focal length is calculated from the temperature distribution. Three different ways of cooling the slab are treated and included in the model as boundary conditions. We derive general solutions of the heat distribution for each case of cooling. The test of the model includes numerical calculations applied to the case of our slab prototype and a comparison with experimental measurements is made.