Abstract

Continuous-wave laser emission at 1.94 μm is reported in Tm:CaY₄(SiO₄)₃O at room temperature with Ti:sapphire laser pumping at 790 nm. Pump thresholds of 100 mW and slope efficiencies of 32% have been achieved. The ³H₆–³H₄ pump absorption peak of 6% Tm:CaY₄(SiO₄)₃O is six times stronger than the ³H₆–³H₄ pump absorption peak of 6% Tm:YAG.

© 1993 Optical Society of America

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