高功率固体激光器微通道冷却结构的数值研究  

Numerical Research on Microchannel Cooling Structure of High Power Solid-State Lasers

作　　者：吕坤鹏 刘震宇 杨雪 王柯 Lü Kunpeng;Liu Zhenyu;Yang Xue;Wang Ke(Science and Technology on Solid-State Laser Laboratory,Beijing 100015,China;The 11th Research Institute of China Electronics Technology Group Corporation,Beijing 100015,China)

机构地区：[1]固体激光技术重点实验室,北京100015 [2]中国电子科技集团公司第十一研究所,北京100015

出　　处：《中国激光》2020年第6期92-97,共6页Chinese Journal of Lasers

基　　金：国防科技重点实验室稳定支持科研项目(JCKY2019210C002)。

摘　　要：针对端面泵浦固体激光器的微通道冷却结构,基于流-固-热耦合的数值方法计算了不同冷却液流量下增益介质内部的温度分布和冷却结构的流动阻力,为下一步冷却结构的改进提供了理论依据。计算结果表明:当冷却液流量增加至15 L/min时,增益介质的最高温度不再出现明显下降,此时微通道冷却结构的内部流动阻力不会对冷却系统运行造成明显的影响;冷却结构的进出口位置及水冷方向对增益介质内部的热分布具有较大的影响。To develop a new microchannel cooling structure for end-pumped solid-state lasers,the temperature distribution of gain medium and flow resistance in the cooling structure were studied using the fluid-thermal-solid coupled numerical method,which provides a theoretical basis for optimization of the new cooling structure.Results show that there is no obvious decrease in maximum temperature of gain medium when the coolant flow rate increases to 15 L/min,and the flow resistance in the microchannel cooling structure at this flow rate does not dramatically influence the working condition of the cooling system.The inlet and outlet positions of the cooling structure and the flow direction greatly influence the temperature distribution of gain medium.

关 键 词：激光光学 激光冷却 固体激光器 热效应 微通道冷却 数值计算 

分 类 号：TN242[电子电信—物理电子学]