为了获得固体激光器的高功率、高光束质量和高效率,采用理论分析的方法,建立了板条激光介质温度分布和冷却速率等热物理参量的模型,并以灯抽运钕玻璃板条固体激光器为例,进行了数值计算。结果表明,2维模型可以更精确地说明板条固体激光器的温度分布和冷却速率等热物理特征。该研究对高功率板条激光介质的设计具有一定的指导意义。

In order to obtain high power, high beam quality and high efficiency of solid-state lasers, by means of theoretical analysis, the models of temperature distribution and cooling rate of slab laser mediums were established. A lamp-pumped Nd∶glass slab solid-state laser was taken as an example for numerical calculation. The results show that, the temperature distribution and cooling rate of slab solid-state lasers can be more accurately described by the 2-D model. This research has certain guiding significance for the design of high power slab laser mediums.