Tunable single-longitudinal-mode Ho:YAG laser pumped by a 1.13  μm diode laser

We demonstrate a tunable single-longitudinal-mode Ho:YAG laser pumped by a 1.13 μm diode. With two intracavity Fabry-Perot etalons, the maximum single-longitudinal-mode output power of 102 mW at 2129.6 nm is obtained. The wavelength is tuned from 2119.7 to 2131.5 nm by precisely rotating two etalons. The measured beam quality factors M² are 1.29 and 1.28 in the x and y directions, respectively.