Abstract
Spectroscopic characterization of a crystal grown by the Czochralski method has been performed, including the absorption and emission spectra. We demonstrate a 2 μm room temperature laser, resonantly pumped by a 1.94 μm Tm:YAP laser. By use of an output coupler with transmission, the laser generated continuous-wave output power of 2.5 W at 2074.18 nm, with a beam quality factor of , for a total incident pump power of 19.4 W. The slope efficiency with respect to the pump power was 17.6%, and the optical-to-optical efficiency was 12.9%. Moreover, we obtained a laser that operated at 2073.77 and 2055.27 nm, by using different output couplers with transmissions of and 30%.
© 2014 Optical Society of America
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