Room-temperature, all-solid-state, broadly tunable laser operation of Cr<sup>2+</sup> -doped CdSe has been demonstrated. Pumping with a Q -switched Tm, Ho:YLF laser running at a 1-kHz repetition rate achieved broadband output of 500 mW at 2.6μm with 48% absorbed power slope efficiency. With reduced efficiency, as much as 815 mW of power was obtained. With a diffraction grating, the Cr<sup>2+</sup>: CdSe laser was tuned from 2.3 to 2.9μm with 10-nm bandwidth (FWHM) and output power up to 350 mW.
© 1999 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
Jason McKay, Kenneth L. Schepler, and Gary C. Catella, "Efficient grating-tuned mid-infrared Cr2+:CdSe laser," Opt. Lett. 24, 1575-1577 (1999)