Abstract

For the first time to the authors’ knowledge, laser activity has been achieved in low-phonon-energy, moisture-resistant bromide host crystals, neodymium-doped potassium lead bromide (Nd3+:KPb2Br5) and rubidium lead bromide (Nd3+:RbPb2Br5; RPB). Laser activity at 1.07μm was observed for both crystalline materials. Laser operation at the new wavelengths 1.18 and 0.97μm that resulted from the F524+H922IJ4 transitions (J=132 and J=112) in Nd:RPB was achieved in a solid-state laser material. Rare-earth-doped MPb2Br5 (M=K,Rb) is a promising candidate for long-wavelength infrared applications because of its low phonon frequencies and other favorable features. In principle, Nd3+:MPb2Br5 has high potential for laser operation at new wavelengths as well as for the achievement of short-wavelength lasing as a result of upconversion.

© 2005 Optical Society of America

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