Abstract
We report the first observation of continuous-wave laser emission at 720 nm, in the deep red region, of a (Pr:KYF) single crystal, pumped with a blue InGaN-based laser diode at 446 nm. We employed a hemispherical cavity with three different output coupling mirrors transmitting 0.7%, 1.4%, and 2.7% of laser radiation. We obtained a maximum output power of 207 mW with a slope efficiency of 24.3%, comparable for the first time to what has been reported for other praseodymium-doped fluoride crystals. The round-trip cavity losses for our sample were estimated to be between 0.3% and 0.6%, a remarkably small value for this material.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
P. Camy, J. L. Doualan, R. Moncorgé, J. Bengoechea, and U. Weichmann
Opt. Lett. 32(11) 1462-1464 (2007)
Philip Werner Metz, Daniel-Timo Marzahl, Christo Guguschev, Rainer Bertram, Christian Kränkel, and Günter Huber
Opt. Lett. 40(12) 2699-2702 (2015)
Philip W. Metz, Sebastian Müller, Fabian Reichert, Daniel-Timo Marzahl, Francesca Moglia, Christian Kränkel, and Günter Huber
Opt. Express 21(25) 31274-31281 (2013)