title: 250 W single-crystal fiber Yb:YAG laser.
abstract: We demonstrate an Yb:YAG single-crystal fiber laser with 251 W output power in continuous-wave and an optical efficiency of 44%. This performance can be explained by the high overlap between pump and signal beams brought by the pump guiding and by the good thermal management provided by the single-crystal fiber geometry. The oscillator performance with a reflectivity of the output coupler as low as 20% also shows high potential for power amplification.
authors: Laboratoire Charles Fabry, Institut d’Optique, CNRS, Univ Paris-Sud, 2 Av A. Fresnel, Palaiseau, France. xavier.delen@institutoptique.fr
authors: Xavier
authors: X
authors: Délen
authors: Stefan
authors: S
authors: Piehler
authors: Julien
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authors: Didierjean
authors: Nicolas
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authors: Aubry
authors: Andreas
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authors: Voss
authors: Marwan Abdou
authors: MA
authors: Ahmed
authors: Thomas
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authors: Graf
authors: Francois
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authors: Balembois
authors: Patrick
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authors: Georges