title: 94 W 980 nm high brightness Yb-doped fiber laser.
abstract: 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 (M(2) 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.
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-University Jena, Jena, Germany. fabian.roeser@uni-jena.de
authors.forename: Fabian
authors.initials: F
authors.lastname: Röser
authors.forename: Cesar
authors.initials: C
authors.lastname: Jauregui
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann