Laser action from Ho3+, Er3+, and Tm3+in YAlO3

Laser action has been observed for the following rare-earth ions in YAlO
3
:Ho
³⁺
(sensitized with Er
³⁺
and Tm
³⁺
), Er
³⁺
, and Tm
³⁺
(sensitized with Er
³⁺
) at wavelengths of 2.123, 0.851, and 1.861 μm, respectively. Measurements of spectroscopic properties, fluorescence kinetics, and laser performance of these ions in YAlO
3
are reported.