灯泵Cr,Nd:GSGG晶体热效应的有限元研究  

Study on Lamp Pump Cr,Nd: GSGG Crystal Thermal Effect Based on Finite Element Analysis

作　　者：汪峰[1] 田丰[1] 武风波[1] WANG Feng;TIAN Feng;WU Fengbo(School of Communication and Information Engineering,Xi＇an University of Science and Technology,Xi＇an 710054,China)

机构地区：[1]西安科技大学通信与信息工程学院,西安710054

出　　处：《实验室研究与探索》2018年第11期28-31,共4页Research and Exploration In Laboratory

基　　金：国家973重点基础研究发展计划资助项目(2013CB035704)

摘　　要：为了减少LD抽运全固态激光器输出高功率而产生激光晶体热效应的影响。采用ANSYS有限元分析软件分析晶体的热导率随温度的非线性变化,得到了闪光灯泵浦的Cr,Nd:GSGG晶体的内部温度场,热应力场分布。模拟出提高冷却水与晶体的传热系数,降低冷却水的温度,端面修磨后晶体的温度场分布,应力分布以及形变等。仿真结果表明,提高冷却水与晶体的传热系数,降低冷却水的温度可以有效降低晶体棒内的温度,而端面的适当修磨对于热透镜效应的改善起到一定作用。In order to reduce effect of laser crystal heat yielded by the high power output of LD pumped full solid state laser, ANSYS finite element analysis software was used to analyze the nonlinear property of the thermal conductivity of the crystal with the temperature change. The Cr, Nd：GSGG crystal internal temperature field and thermal stress field distribution were obtained. The heat transfer coefficients of the cooling water and the crystal were simulated, as well as the temperature of cooling water. The temperature field distribution of the crystal after grinding the end surface, the stress distribution and deformation were obtained. The simulation results show that increasing heat transfer coefficients of cooling water and the crystal, or reducing the temperature of the cooling water can effectively reduce the temperature in the crystal rods, and the end face of the appropriate grinding also plays a role for the improvement of thermal lens effect.

关 键 词：热导率 铬 钕 GSGG晶体 温度场 

分 类 号：TN244[电子电信—物理电子学]