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Andreas Tünnermann
Researcher at Fraunhofer Society
Publications - 1757
Citations - 48543
Andreas Tünnermann is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Fiber laser & Laser. The author has an hindex of 97, co-authored 1738 publications receiving 43757 citations. Previous affiliations of Andreas Tünnermann include Schiller International University & University of Jena.
Papers
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Proceedings ArticleDOI
Suppression of higher order modes in a multimode fiber amplifier using efficient gain-loss-management (GLM)
TL;DR: In this paper, the suppression of higher order transverse modes in rare earth-doped multimode fiber amplifiers is analyzed and an efficient gain-loss-management single transverse mode operation can be enforced in fibers with core diameters up to several 10 μm to 100 μm.
Journal ArticleDOI
Optimization of high performance ultrafast fiber laser systems to >10 GW peak power
TL;DR: In this paper, a simple and fast model for saturated broadband fiber CPA systems is developed and applied to study the impact of the interplay between the spectrally dependent small signal gain and the saturation on the output bandwidth.
Proceedings ArticleDOI
High-power femtosecond fiber laser systems
TL;DR: In this article, a diode-pumped ytterbium-doped double-clad fiber-based chirped pulse amplification system was proposed to achieve up to 60 W average power with a peak power of 2.3 MW.
Proceedings ArticleDOI
On the Raman threshold of passive large mode area fibers
TL;DR: In this paper, an improved Raman threshold formula for short LMA fibers is presented, which is valid for short (several meters long) LMA fiber and can be used to determine the minimum core area required to avoid SRS.
Journal Article
Power scaling of high-power fiber lasers and amplifiers
Andreas Tünnermann,S. Höfer,Andreas Liem,Jens Limpert,M. Reich,Fabian Röser,Thomas Schreiber,Holger Zellmer,Thomas Peschel,Volker Guyenot +9 more
TL;DR: In this paper, the advantages of rare-earth-doped photonic-crystal fibers for the power scaling of fiber lasers to the multi-kW range with excellent beam quality are discussed.