文摘
We report a narrow linewidth continuous wave Ho:SSO laser with Fabry–Perot etalons. The maximum output power reaches 2.35 W when the incident pump power is 15.5 W with the optical-to-optical conversion efficiency and slope efficiency 15.1 and 19.3 %, respectively. A stable output and a narrow linewidth less than 0.3 nm FWHM at 2112 nm are achieved. With the intra-cavity F–P etalons, the laser beam quality M 2 = 1.26 ± 0.02, which is optimized obviously. Keywords Solid-state laser Ho:SSO Narrow linewidth