Abstract
Praseodymium- and dysprosium-doped lanthanum halide powders have been synthesized by a sol-gel–reactive-atmosphere approach. Emission at from a sol-gel-derived material was observed for the first time to our knowledge. Measured lifetimes corresponded to radiative quantum efficiencies of approximately 8% for , 72% for , and 78% for . The spectroscopic properties of these hosts are shown to be comparable with those of melt-grown single-crystal analogs, verifying the ability of inexpensive and low-temperature solution-based methodologies to produce low-phonon-energy materials.
© 1997 Optical Society of America
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