研究了最大输出功率超过500 W的全固态连续高功率1 064 NM激光器。为了改善热效应,选用了扩散键合方法制成的复合ND:YAG,有效地降低了高功率激光器中的激光晶体热透镜问题。在实验中,1 064 NM输出镜的透过率分别为T=10%、30%、35%和40%,得到了512 W 1 064 NM输出,光-光转换效率达到32%。 An all-solid-state continuous high-power 1 064 NM laser with a maximum output power exceeding 500 W was studied. In order to improve the thermal effect, the composite ND: YAG made by the diffusion bonding method is selected, which effectively reduces the problem of laser crystal thermal lens in high power laser. In the experiment, the transmittances of 1 064 NM output mirror are T = 10%, 30%, 35% and 40%, respectively. The output of 512 W 1 064 NM is obtained, and the light-to-light conversion efficiency reaches 32%.