薄片激光器均匀抽运及均匀冷却技术研究  

Study of Uniform Pumping and Uniform Cooling on Thin Disk Laser

作　　者：蔡震[1] 王小军[2] 蒋建锋[1] 涂波[1] 靳全伟[1] 赵娜[1] 姚震宇[1] 唐淳[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900 [2]北京应用物理与计算数学研究所,北京100088

出　　处：《中国激光》2010年第10期2437-2440,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金重大项目(60890201)资助课题

摘　　要：均匀抽运及均匀冷却是激光二极管抽运激光器减小热致光学畸变以实现高光束质量输出的核心技术难题。通过开展键合薄片激光均匀抽运及均匀冷却技术的研究,采用透镜压缩结合波导匀化的设计思想,实现了95%以上的抽运均匀性。同时通过对薄片介质冷却通道的优化设计,实现了优于96%的温度分布均匀性。原理验证实验结果表明薄片介质的波前畸变得到了有效控制,当平均抽运功率密度为230 W/cm2时,忽略离焦效应后介质的反射波前畸变均方根值约为0.35μm。Uniform pumping and uniform cooling are key techniques to reduce thermo-optical distortion and to achieve high beam quality output for solid-state laser.Uniform pumping and uniform cooling technique researches about bonding thin disk are carried out.Pumping uniformity of 95% is achieved by using lens compress and waveguide uniform pumping coupling frame.The temperature distribution uniformity is better than 96% through optimizing cooling channels.The experimental results show that the wave-front distortion of thin disk has been controlled effectively.The mean square root（RMS） of reflect wave-front distortion is about 0.35 μm ignoring the defocusing effect when the pumping intensity is 230 W/cm2.

关 键 词：固体激光器 增益分布 温度分布 光学畸变 

分 类 号：TN248.1[电子电信—物理电子学]