We report the results of experimental investigations undertaken to optimize the overall efficiency of a flashlamp pumped room temperature 2-µm laser. Lasers operating on the 5/75/8 transition of the Ho3+ ion in several garnet hosts were studied. Sensitization for flashlamp pumping was provided by Cr3+ and Tm3+ codopants via the pumping process shown schematically in Fig. 1.

© 1989 Optical Society of America

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