根据热传导理论建立了板条和块状晶体的热传导方程, 通过对热传导方程的求解以及数值模拟, 对比分析了高泵浦功率下Tm:YLF板条和块状晶体的温度分布, 热应力和热透镜效应。计算结果表明, 板条晶体更适合高功率激光输出, 可为提升激光器功率提供必要的理论指导。

Based on heat conduction theory, the heat conduction equation of slab and bulk crystals is established. Making solution for heat conduct equation and numerical simulation, the temperature distribution, thermal stress and thermal lens effect of the Tm:YLF of slab and bulk crystals is analyzed comparatively in the condition of high pumping power. The calculated results indicate that the slab crystal is more suitable for the output of high power laser. The necessary theoretical guidance is provided for developing the laser power.