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/cm2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％。
Technologies of Thin-Disk Continuous Wave Laser Based on Optical Adhesive
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/cm2 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.
NETL
NSTL
万方数据
