LD泵浦Pr∶YLF固体激光器

LD pumped Pr∶YLF solid-state laser

研究了LD泵浦Pr∶YLF固体激光器。激光器采用LD端面泵浦结构,通过建立激光器热效应模型,对激光晶体内部温度场进行了解析计算,模拟分析了不同掺杂浓度Pr∶YLF晶体的光吸收以及温度场分布,对激光器泵浦耦合系统和输出镜的透射率等参数进行了优化设计,实现了LD泵浦Pr∶YLF固体激光器的高功率、高效率输出。当LD泵浦功率为2 W时,获得了最大输出功率为287 mW,光光转换效率达16.1%,光束质量因子为M_(X)^(2)=1.38,M_(Y)^(2)=1.35的640 nm激光。

In this paper,the LD pumped Pr∶YLF solid-state laser is studied.The laser adopts LD end-surface pumped structure,and the internal temperature field of the laser crystal is calculated analytically by establishing a laser thermal effect model.The optical absorption and temperature field distribution of Pr∶YLF crystal with different doping concentrations are simulated and analyzed,and the parameters of the laser pumping coupling system and the transmittance of the output mirror are optimized to achieve high power and high efficiency output of the LD pumped Pr∶YLF solid-state laser.When the LD pump power was 2W,a 640 nm laser with a maximum output power of 287 mW,an optical conversion efficiency of 16.1%,and a beam quality factor of M_(X)^(2)=1.38 and M_(Y)^(2)=1.35 was obtained.