Crystal growth and lasing properties of Tm∶YAP laser crystal

High quality Tm-doped YAlO3(Tm∶YAP) single crystal with 4 at% doping concentrations was grown by the Czochralski method.X-ray power diffraction studies of Tm∶YAP crystal confirm that the as-grown crystal is isostructural with the YAP crystal.The absorption spectra show that Tm∶YAP crystal has strong absorption peaks at 688 and 794nm.A 793nm laser diode pumping Tm∶YAP crystal was applied to realize 2.01μm laser output,the maximum output power was 5.1W,the optical conversion efficiency was 37% and the slope efficiency was 43.5%.Continuous tunable range from 1894 to 2066nm is achieved with the maximum laser output power of 1.84W at 2010nm.