Abstract

We report the first observation to our knowledge of room-temperature continuous-wave laser operation of a Pr³⁺:KY₃F₁₀ single crystal at 644.5 nm, pumped by a blue GaN laser diode emitting at 446 nm. With a 2.5% transmission output coupler and a nonoptimized optical cavity, an output power of 39 mW was obtained at 644.5 nm with a laser threshold of 125 mW and a differential slope efficiency of 23%.

© 2007 Optical Society of America

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History
Original Manuscript: March 6, 2007
Manuscript Accepted: March 23, 2007
Revised Manuscript: March 23, 2007
Published: May 2, 2007

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