通过双波长振荡的理论计算, 初步确定了黄激光的基频光 1 123 nm激光腔的镀膜参数。根据理论计算结果, 对谐振腔进行了优化设计, 采用选择性镀膜方式, 对增益系数较大的 1 064、946以及 1 319 nm激光进行抑制使其在腔内不能增益起振, 同时使得 1 123 nm激光可以较容易地在腔内增益起振, 采用 50W功率 808 nm波长的半导体模块进行泵浦, 获得了功率为 6.3W的 1 123 nm波长激光输出。通过对 561 nm激光输出镜镀膜参数的设计, 采用 KTP晶体倍频, 最终获得了3.5W功率的 561 nm黄激光输出。

In this paper, the reflectivity parameters of 1 123 nm laser cavity were preliminarily calculated based on the theory ofsimultaneous dual wavelength laser, and the optimum laser resonant cavity was designed. In the cavity, 1064 nm, 946 nm, 1319 nmlasers were restrained and1 123 nm laser was enhanced through designing the selective reflectivity parameters of the mirrors, 6.3W1 123 nm laser was obtained with 50 W 808 nm side-pumped diode laser. Then, the selective reflectivity parameter of 561 nm outputmirror was designed, 3.5 W 561 nm yellow laser beam was obtained by intracavity doubling the frequency of 1 123 nm laser withKTP crystal.