Room-temperature laser action from Cr2+-doped Cd0.85Mn0.15Te has been demonstrated for what is believed to be the first time. We achieved pulsed laser operation centered at ~2.5μ m by pumping into the mid-infrared absorption band of Cr2+ ions by use of the 1.907- μm output of a H2 Raman-shifted Nd:YAG laser. The output of the free-running Cr2+:Cd0.85Mn0.15Te laser had a width of ~50 nm (FWHM), and the slope efficiency was calculated to be 5.5% under nonoptimum conditions.
© 1997 Optical Society of America
U. Hömmerich, X. Wu, V. R. Davis, S. B. Trivedi, K. Grasza, R. J. Chen, and S. Kutcher, "Demonstration of room-temperature laser action at 2.5 μm from Cr2+:Cd0.85Mn0.15Te," Opt. Lett. 22, 1180-1182 (1997)