基于光胶工艺的薄片连续激光器技术研究  

Technologies of Thin-Disk Continuous Wave Laser Based on Optical Adhesive

作　　者：石玉森 潘雪[1] 张鹏 肖奇 李祖强 王江峰[1] 姜有恩[1] 范薇[1] 李学春[1] 朱健强[1] Shi Yusen;Pan Xue;Zhang Peng;Xiao Qi;Li Zuqiang;Wang Jiangfeng;Jiang Youen;Fan Wei;Li Xuechun;Zhu Jianqiang(Key Laboratory of High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Zhangjiang Laboratory,Shanghai 201210,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理联合实验室,上海201800 [2]张江实验室,上海201210 [3]中国科学院大学材料与光电研究中心,北京100049

出　　处：《激光与光电子学进展》2024年第5期297-304,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11604350);中国科学院战略性先导科技专项(XDA25020307,XDA25020103);上海市自然科学基金(20ZR1464800)。

摘　　要：研究了薄片激光器中晶体与热沉的封装技术和核心技术,采用薄片晶体与金刚石热沉的光胶工艺,自主设计并研制了5 mm口径的YAG/Yb∶YAG复合薄片激光模块,分析了该薄片激光模块的多通泵浦系统,建立了晶体热效应数值仿真模型,实验测量了在2.2 kW/cm^(2)泵浦功率密度、940 nm泵浦波长下薄片晶体的热焦距为445.6 mm;采用基于光胶工艺封装的薄片激光模块搭建连续激光器,在70 W泵浦功率下获得了18.75 W功率的基横模输出,斜率效率和光光转换效率分别为36.59%和26.79%。We study the packaging method and key technologies of thin-disk laser,and report on our home-made thin-disk module comprising a YAG/Yb∶YAG composite thin-disk crystal with 5 mm diameter,which is glued onto a diamond heat sink.The multi-pass pumping scheme of the thin-disk module is analyzed and a numerical simulation model of thermal effect is established.The thermal focal length of the thin-disk crystal is measured to be approximately 445.6 mm at pump power density of 2.2 kW/cm^(2) and pump wavelength of 940 nm.A continuous wave laser based on the thin-disk module is realized and it delivers fundamental mode output of 18.75 W at the pump power of 70 W.The slope efficiency and optical-to-optical efficiency are 36.59%and 26.79%,respectively.

关 键 词：激光器 薄片激光器 多通泵浦 热效应 连续激光器 

分 类 号：TN248.1[电子电信—物理电子学]