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Proceedings Paper

Recent progress in the understanding of mode instabilities
Author(s): Cesar Jauregui; Hans-Jürgen Otto; Norbert Modsching; Jens Limpert; Andreas Tünnermann
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Paper Abstract

In this work the latest progress in the understanding of mode instabilities is reviewed. Particular emphasis is put on the recently established influence of photodarkening on the mode instability threshold and its behavior. It is shown, for example, that even degradations of the output power in the order of a few percent can lead to very significant reductions of the mode instability threshold. Moreover, our analysis shows that photodarkening also alters the expected behavior of the mode instability threshold with respect to the signal wavelength and the seed power. Thus photodarkening is revealed as one of the main effects shaping the behavior of the mode instability threshold observed in experiments.

Paper Details

Date Published: 4 March 2015
PDF: 6 pages
Proc. SPIE 9344, Fiber Lasers XII: Technology, Systems, and Applications, 93440J (4 March 2015); doi: 10.1117/12.2086843
Show Author Affiliations
Cesar Jauregui, Friedrich-Schiller-Univ. Jena (Germany)
Hans-Jürgen Otto, Friedrich-Schiller-Univ. Jena (Germany)
Norbert Modsching, Friedrich-Schiller-Univ. Jena (Germany)
Jens Limpert, Friedrich-Schiller-Univ. Jena (Germany)
Helmholtz-Institute Jena (Germany)
Andreas Tünnermann, Friedrich-Schiller-Univ. Jena (Germany)
Helmholtz-Institute Jena (Germany)
Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)


Published in SPIE Proceedings Vol. 9344:
Fiber Lasers XII: Technology, Systems, and Applications
L. Brandon Shaw, Editor(s)

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