High average power Q-switched Ho:YAG laser with a single-line emission at 2122 nm.

We present an efficient Q-switched dual-crystal Ho:YAG laser resonator achieving an output power of 56 W at an incident pump power of 100.7 W with a slope efficiency of 64.4%.

Alignment-insensitive end-pumped continuous-wave crossed-Porro prism Ho:YAG laser.

A continuous-wave crossed-Porro prism Ho:YAG laser is presented and compared with a corresponding mirror resonator. A maximum output power of 30.7 W is reached with a slope efficiency of 67.

Mid-infrared optical parametric oscillator pumped by a high-pulse-energy, Q-switched Ho:YAG laser.

A high-pulse-energy mid-infrared light source is presented, based on a zinc-germanium-phosphide optical parametric oscillator (ZGP OPO) pumped by an actively $Q$-switched high-pulse-energy ${{\rm Ho}^{3 +}}{:}{\rm YAG}$ laser. The ${{\rm Ho}^{3 +}}{:}{\rm YAG}$ pump laser source is capable of generating a pulse energy of 15 mJ from a single ${{\rm Ho}^{3 +}}{:}{\rm YAG}$ rod at room temperature at a pulse repetition frequency (PRF) of 700 Hz. A maximum power of 20.