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94 W 980 nm high brightness Yb-doped fiber laser

: Röser, F.; Jauregui, C.; Limpert, J.; Tünnermann, A.

Postprint (194 KByte; PDF; )

Optics Express 16 (2008), No.22, pp.17310-17318
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IOF ()

We report on the generation of 94 W continuous wave output power at 980 nm using an Yb-doped fiber laser. This is achieved using an ultra large-mode-area rod-type photonic crystal fiber pumped at 915 nm. To the best of our knowledge this is the highest output power close to diffraction-limited beam quality (M2 about 2.2) achieved in this wavelength range from fibers so far .The experimental results are supported by detailed numerical simulations that provide a deeper understanding of the laser process, in particular the competition with the 1030 nm emission.