Investigation on Continuous Wave Laser Performance of alpha-Cut Tm,Ho:YAlO3 Crystal at Room Temperature

An experimental investigation on the laser performance of an α-oriented Tm,Ho: YAIO
₃
crystal end-pumped by a wavelength tunable Ti:Sapphire laser is presented in this paper. Single- and dual-wavelength operations of Tm,Ho:YAIO
₃
lasers have been investigated in detail. Maximum output powers of 890mW at 2119nm, 836mW at 2103nm and 487mW at 2130nm for the α-oriented Tm,Ho:YAIO
₃
crystal have been obtained, corresponding to optical conversion efficiencies of 32% and 31% and 18% in terms of absorbed pump power, respectively. The maximum slope efficiency reaches 45.9% when the laser runs at 2119nm.