Abstract

Single crystal samples of LiF: UO3 were tested for laser action. While no unambiguous evidence for laser oscillations was observed, the material did show anomalous fluorescent decay under the high-intensity pumping in basically two respects: (1) a short-lived (20-μsec to 30-μsec) micro-spike was exhibited, followed by (2) a period of unusually slow decay. To explain the observations, a depopulation mechanism is proposed and discussed.

© 1966 Optical Society of America

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