高能量光泵浦下板状复合介质的热特性  

THERMAL CHARACTERISTICS OF SLABBY COMPOSITE MEDIUM PUMPED BY HIGG LASER POWER

作　　者：柳爱国[1] 王军荣[1] 闵敬春[1] 宋耀祖[1] 

机构地区：[1]清华大学工程力学系,北京100084

出　　处：《工程热物理学报》2003年第4期676-678,共3页Journal of Engineering Thermophysics

基　　金：国家高科技研究发展计划863计划项目(No.2002AA744042)

摘　　要：为降低高能量光泵浦下板状激光放大介质内的热效应,提出了复合介质的方案。利用有限元方法,计算并比较了侧面存在强迫对流换热条件下,单一介质与复合介质内的温度分布和热应力分布。分析了复合介质尺寸对介质内最高温度及最大热应力的影响,给出了复合介质的最佳尺寸。Composite laser slabs are suggested to reduce thermal effects when laser slabs are pumped by high laser power. The temperature and thermal stress distribution resulted from Finite Element simulation in sing slabs are compared respectively with those in composite slabs using forced convection to cool the slabs. The influence of composite slabs to the highest temperature and thermal stress in slabs is analyzed, and the optimum size of composite slab is proposed.

关 键 词：高能量光泵浦 复合介质 热特性 有限元计算 

分 类 号：TK124[动力工程及工程热物理—工程热物理]