液冷薄片构型激光器及其热管理技术  

Thermal Management Technology of a Liquid Cooling Thin-disk Oscillator

作　　者：杨鹏[1] 马仑[1] 姜彦玲 李伟[1] 聂荣志[2] 赵朋飞[2] 佘江波[2] 

机构地区：[1]长安大学信息工程学院,西安710069 [2]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,西安710119

出　　处：《光子学报》2016年第3期34-38,共5页Acta Photonica Sinica

基　　金：陕西省自然科学基础研究计划(No.2015JM6278);中国博士后科学基金和国家自然科学基金(No.61308086)资助~~

摘　　要：为了解决增益介质的热效应问题,提出了一种浸没式构型液冷激光器方案,该构型激光器在10Hz重复抽运频率下,获得了615mJ的能量输出,光光转换效率为21%,斜率效率为23%.基于流体力学和热力学原理,建立了激光器增益区流场的热-流-固耦合模型,利用软件模拟和有限元分析法,研究了在不同流速、泵浦功率条件下,整个增益区的温度场、速度场的分布特性;并基于增益区温度场的分布,分析了液冷条件下通过增益区的激光波前畸变特性.结果表明,增益介质的最大光程差为0.7666λ,冷却液最大光程差为-4.7331λ,说明该构型激光器有着良好的热管理性能.In order to solve the problem of the thermal effect of the laser gain media,a configuration named＂immersed thin-disk oscillator＂solid laser cooled directly with flow was proposed.Under the repeated pumping frequency of 10 Hz,a maximum output energy of 615 mJ was realized.The opticaloptical efficiency and the slope efficiency is 23% and 21% respectively.Based on the principle of fluid mechanics and thermodynamics,the thermal-flow-solid coupling model of lasing region was established.By using the software and the method of finite element analysis,the distribution characteristics of temperature field and velocity field were studied under the conditions of different flow rate and pump power.The wavefront aberration of the laser passing the gain region was simulated under the condition of liquid-cooled.The maximum optical path difference of the gain medium and coolant liquid are 0.7666λand-4.7331λrespectively.The results show that the laser has a good thermal management performance.

关 键 词：薄片激光器 液体冷却 热效应 热管理 波前畸变 

分 类 号：TN248[电子电信—物理电子学]