当选择YSGG、GGG、GSGG、YAG、YLF作为基质材料时, Er3 + 的4I11/2 能级和4I13/2 能级之间能够跃迁产生2.7～3{\\mkern 1mu}μm的激光,该波段激光在医疗、**等方面有着重要的应用价值。 在790 nm, Er:YSGG作为工作物质可产生2.79 μm激光。 通过建立Er:YSGG能级跃迁的速率方程,理论分析了转镜调Q激光器的系统特性, 并在此基础上进行了数值模拟。结果显示在给定激光工作物质各项参数的情况下, 系统各个变量能够对转镜调Q激光器的性能产生影响。这些结果将为类似实验的设计和改进提供理论指导。

2.7～3μm laser, which has the important value of medical and military applications, are obtained from the transition 4I11/2 →4I13/2 with rare earth Er3 + as the active ions and YSGG, GGG, GSGG, YAG, YLF as the matrix material. Under 790 nm pump, the Er:YSGG as laser material can produce 2.79 μm stimulated emission. By building the rate equation of Er:YSGG energy level transition, the system characteristics of rotating mirror Q-switched laser were analyzed and numerical simulations were carried out. Result of the numerical simulations comprehensively shows the influence of system variables on the performance of rotating mirror Q-switched laser. These conclusion will provide theoretical guidance for the laser design and improvement of similar experiment.