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1009 nm continuous-wave ytterbium-doped fiber amplifier emitting 146 W

 
: Beier, Franz; Otto, Hans-Jürgen; Jauregui, Cesar; Vries, Oliver de; Schreiber, Thomas; Limpert, Jens; Eberhardt, Ramona; Tünnermann, Andreas

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Optics Letters 39 (2014), No.13, pp.3725-3727
ISSN: 0146-9592
English
Journal Article
Fraunhofer IOF ()

Abstract
In this Letter, we demonstrate a single-mode continuous-wave fiber laser amplifier emitting 146 W of average output power at a wavelength of 1009 nm. The wavelength and bandwidth of the seed oscillator are defined by a pair of fiber Bragg gratings. The seed is amplified in a two-stage ytterbium-doped rod-type amplifier to 146 W with a high slope efficiency of 64%, showing excellent beam quality and stability throughout the experiment. The ASE suppression is as high as 63 dB.

: http://publica.fraunhofer.de/documents/N-294243.html