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Proceedings Paper

Mode instabilities: physical origin and mitigation strategies
Author(s): Cesar Jauregui; Hans-Jürgen Otto; Florian Jansen; Fabian Stutzki; Tino Eidam; Jens Limpert; Andreas Tünnermann
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Paper Abstract

The phenomenon of mode instabilities has quickly become the most limiting effect for a further scaling of the average power of fiber laser systems. It is important to get a detailed understanding of its physical origin in order to develop efficient mitigation strategies. In this work we present an analysis of the different physical processes that give rise to mode instabilities and reveal that thermally-induced non-adiabatic waveguide changes play a key role. With this insight in the physical processes underlying mode instabilities a semi-analytic formula is obtained and several mitigation guidelines will be presented and discussed.

Paper Details

Date Published: 22 March 2013
PDF: 6 pages
Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86010F (22 March 2013); doi: 10.1117/12.2004381
Show Author Affiliations
Cesar Jauregui, Friedrich-Schiller-Univ. Jena (Germany)
Hans-Jürgen Otto, Friedrich-Schiller-Univ. Jena (Germany)
Florian Jansen, Friedrich-Schiller-Univ. Jena (Germany)
Fabian Stutzki, Friedrich-Schiller-Univ. Jena (Germany)
Tino Eidam, Friedrich-Schiller-Univ. Jena (Germany)
Helmholtz-Institut Jena (Germany)
Jens Limpert, Friedrich-Schiller-Univ. Jena (Germany)
Helmholtz-Institut Jena (Germany)
Andreas Tünnermann, Friedrich-Schiller-Univ. Jena (Germany)
Helmholtz-Institut Jena (Germany)
Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)


Published in SPIE Proceedings Vol. 8601:
Fiber Lasers X: Technology, Systems, and Applications
Sami T. Hendow, Editor(s)

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