1.86 W cw single-frequency 1319 nm ring laser pumped at 885 nm

摘要

A 1.86 W cw single-frequency 1319 nm laser was produced by using an 885 nm-pumped Nd:YAG crystal with a compact four-mirror ring cavity, for the first time to our knowledge. The Nd:YAG produced a slope efficiency of 21percent and an optical-to-optical efficiency of 18percent with respect to the absorbed diode pump power. A near-diffraction-limited beam with M~(2) velence 1.2 was achieved under the maximum output power.