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以解析热分析理论为基础,建立了平板Nd:LuVO4晶体在激光二极管阵列双侧泵抽运时的导热微分方程。通过方程求解,得到平板Nd:LuVO4晶体内部温度场分布的解析式及热形变分布。温度场和热形变场的数值模拟表明:当泵浦光平均功率Po=10 W、泵浦区域为1 mm×1 mm时,四组激光二极管阵列光源在三处不同位置的一维温度场、二维温度场分布和热形变量有很大差异;将三处泵浦光源位置所产生的温度分布和热形变量对比,得到了泵浦光源在位置1、2处所产生的温升和热形变量相对较小,位置3处最大。所得结论可为平板Nd:LuVO4激光器的设计及热效应消除提供理论依据。
Based on the analysis of thermal analysis theory, the differential thermal conduction equation of flat Nd: LuVO4 crystal for pump pumping of laser diode array is established. By solving the equation, the analytical expression and thermal deformation distribution of the temperature distribution in the flat Nd: LuVO4 crystal were obtained. Numerical simulation of temperature field and thermal deformation field shows that when the average power of pump light is 10 W and the pump area is 1 mm × 1 mm, the one-dimensional temperature field of three laser diode array light sources at three different positions, Dimensional temperature field distribution and thermal deformation variables are very different; the temperature distribution and thermal deformation generated by the three pump light source position compared to get the pump light source at the location 1, 2 generated by the temperature and heat The variable is relatively small, with the maximum at position 3. The conclusion can provide a theoretical basis for the design of plate Nd: LuVO4 lasers and the elimination of thermal effects.