Abstract

Nonexponential decay of the ²E level of Ti: Al₂O₃ at 300 K is reported for the first time to the authors’ knowledge. A decay time of 5.5 μsec at 15 μsec after excitation was observed in Ti:Al₂O₃ samples prepared by different growth methods as compared with 3.2 μsec observed initially. Correlations of the nonexponential decay characteristics with the laser figure of merit and crystal homogeneity are presented. A simple and nondestructive crystal diagnostic method is proposed.

© 1989 Optical Society of America

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