The efficiency of Pr-doped fluorozirconate amplifiers at 1300 nm are limited by nonradiative decay. The Pr3+ 1G4 excited state lifetime has been measured in a mixed halide glass to be 2.7 times longer than the lifetime in a fluorozirconate host. The longer lifetime denotes a comparable reduction in the nonradiative decay rate.

© 1992 Optical Society of America

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