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Laser Demonstrations of Rare-Earth Ions in Low-Phonon Chloride and Sulfide Crystals

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Abstract

Laser results are summarized for the low-phonon hosts KPb2Cl5 and CaGa2S4. Radiative quantum efficiencies were determined in KPb2Cl5:Dy3+ directly from emission spectra in order to accurately determine its long-wavelength potential. The results indicate that room-temperature laser action should be possible to near 9 µm in this host.

© 2000 Optical Society of America

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