Holmium laser in-band pumped by a thulium laser in the same host of YAlO3
- 29 November 2008
- journal article
- Published by Pleiades Publishing Ltd in Laser Physics
- Vol. 18 (12), 1501-1504
- https://doi.org/10.1134/s1054660x08120165
Abstract
We report on the room-temperature continuous-wave (CW) operation of a Ho:YAlO3 laser that is resonantly end pumped at 1.94 μm by a diode-pumped thulium-doped laser in the same host. Through the use of a 1 at % Ho3+-doped 20-mm-long YAlO3 crystal (b cut), the Ho:YAlO3 laser generated 1 W of linearly polarized (E//c) output at 2118 nm and 0.55 W of E//a output at 2128.5 nm for an incident pump power of 5 W, with an output coupler transmission of 14 and 3%, respectively. An optical-to-optical conversion efficiency of 20% and a slope efficiency of 33% were achieved at 2118 nm corresponding to an incident pump power.Keywords
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