CW and Q-switched 2 µm solid-state laser on ZrO2–Y2O3–Ho2O3 crystals pumped by a Tm fiber laser
A solid-state laser based on yttrium-stabilized zirconia crystals (86 mol% ZrO2–13.6 mol% Y2O3–0.4 mol% Ho2O3) and pumped by a thulium fiber laser at a wavelength of 1907 nm was developed. The maximum output power of 8.8 W was achieved, with a slope efficiency of 46% for continuous-wave operation. 2 µm Q-switched operation of the laser at repetition rates of 1 kHz and 10 kHz was demonstrated.
