Abstract

The 2.09-μ Ho:YAG ⁵I₇ → ⁵I₈ laser transition is intracavity pumped by a Tm:YAG laser. Separate Tm:YAG and Ho:YAG crystals share a single laser cavity, the Tm:YAG crystal is pumped at 785 nm, and the resulting 2.01-μm Tm³⁺ laser emission pumps the Ho:YAG crystal. The slope efficiency of the 2.09-μm Ho³⁺ laser output is 42% of the absorbed 785-nm pump power.

© 1992 Optical Society of America

7.3 W of single-frequency output power at 2.09 μm from an Ho:YAG monolithic nonplanar ring laser

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