W Yuan, R Fang, H Xu, Z Cai - Optics & Laser Technology, 2023 - Elsevier
We demonstrated a near-infrared laser at 1195.8 nm in a Ho 3+(0.5 at.%): YLF crystal for the
first time, with the upper energy level of 5 I 6, and a 640 nm red laser was used as pump …