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Conferences > ASSL > 1993 > ML > ML9

Alexandrite Laser Pumped Ho:Tm:YLF Laser Performance

Chang J. Lee, Gooywan Han, Clayton H. Bair, Norman P. Barnes, Philip Brockman, and Robert V. Hess

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Abstract

The performance of Ho:Tm:YLF pumped by an Alexandrite laser was compared to previously obtained results for comparable Ho:Tm:YAG experiments. We have used an Alexandrite laser with pulse durations of 650μs and 200μs to longitudinally pump Ho:Tm:YLF crystal with 1.5% and 0.5% Ho concentration and length of 4 to 6mm. For a 1.5% Ho concentration in YLF, with pump pulse of 200μs, a slope efficiency as high as 50% is obtained for 6mm long crystal. In general, higher slope efficiencies are achieved in Ho:Tm:YLF than in Ho:Tm:YAG. Previous Ho:Tm:YAG experimental measurements are in good agreement with an improved rate equation model.

© 1993 Optical Society of America

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