激光二极管双侧泵平板Nd:LuVO4晶体热效应

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。

Thermal effect in Nd:LuVO4 crystal slab laser diode double-side pumped

Based on the theory of thermal analysis,heat conduction equation of Nd:LuVO4 crystal slab double-side pumped by diode laser arrays was built.By solving the heat conduction equation,the analytic expression of temperature field and thermal deformation distribution were obtained.Numberical simulation show that as geometry of pumping diode corresponds to 1 mm×1 mm,and the average power is about 10 W,the distribution of one-dimensional temperature field,two-dimensional temperature field and thermal deformation have great differences when four groups of diode laser arrays were in there different locations;contrasting with the temperature distribution and thermal deformation produced by pump source in three position,the temperature rise and thermal deformation in the location of 1 and 2 are relatively small,the location of 3 is biggest.This result will supply theory for design and elimination of thermal effects of Nd:LuVO4 crystal slab laser.