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
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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12 kW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。Abstract: 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.
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Key words:
- laser technology /
- yb:yag laser /
- laser diode pumped /
- cryogenic heat pipe
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