激光二极管泵浦的重复频率大能量低温Yb:YAG激光器设计  

Laser diode pumped cryogenically cooled Yb:YAG laser design for rep-rated and high-energy output

作　　者：王明哲[1,2] 段文涛[2] 曹丁象[2] 郑建刚[2] 蒋新颖[2] 李明中[2] 谭吉春[1] 於海武[2] 景峰[2] 

机构地区：[1]国防科学技术大学理学院,长沙410073 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2010年第1期36-40,共5页High Power Laser and Particle Beams

摘　　要：为实现重复频率大能量激光输出,基于Yb:YAG激光介质低温下良好的热特性和激光特性,设计了12kW高功率激光二极管(LD)阵列泵浦的V型腔低温Yb:YAG激光器(液氮温度)。对于泵浦耦合系统和散热结构两个关键点,分别使用光线追迹方法和有限元方法进行了分析,提出了楔形真空窗口和低温热管等解决方案。模拟结果表明,该设计的激光器热效应较低,可实现重复频率大能量输出。At cryogenic temperature, Yb：YAG medium has both good thermal property and high laser performance. Considering that, a 12 kW laser dioder pumped V-shaped cryogenic Yb：YAG laser design has been demonstrated in order to get rep-rated high energy output. Based on the ray tracing method and finite element analysis, the coupling system and cooling scheme were investigated, respectively. In addition, wedge-shaped vacuum window and cryogenic heat pipe schemes have been proposed. The simulation results show that the thermal effect of laser medium is much lower compared with room temperature operated laser, and the design can realize rep-rated high energy output.

关 键 词：激光技术 YB:YAG激光器 激光二极管泵浦 低温热管 

分 类 号：TN248[电子电信—物理电子学]