Abstract
(Summary) This talk reviews recent experimental progress in the development of stable, broadly-tunable, color-center lasers using (F2+)A centers in KI:Li and RbI:Li crystals as the active media. We report the first successful production of these centers in additively-colored KI:Li.1 This was accomplished through the elimination of nitrogen contamination in each stage of crystal preparation. Nitrogen diffuses into the KI lattice at elevated temperatures, especially during the additive-coloration process, and combines with isolated lithium inhibiting the formation of (F2+)A centers. This material now offers the possibility of obtaining a stable color center laser medium with tunability extending from 2.4 to 4.0 microns.2
© 1986 Optical Society of America
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