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Proceedings Paper

High-power linear-polarized narrow linewidth photonic crystal fiber amplifier
Author(s): Christian Wirth; Thomas Schreiber; Miroslaw Rekas; Igor Tsybin; Thomas Peschel; Ramona Eberhardt; Andreas Tünnermann
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Paper Abstract

We report on the high power amplification of narrow linewidth laser radiation with close to diffraction limited beam quality using a large mode area photonic crystal fiber amplifier. The observation of threshold-like higher order mode amplification by transverse spatial-hole burning at the highest power level is reported. The measured M² stays below 1.3 but increases at the critical power level, where the fundamental mode turns into the next higher order mode. At the maximum power of 1.2 kW a linewidth of <80 pm limited by self-phase modulation is obtained.

Paper Details

Date Published: 17 February 2010
PDF: 6 pages
Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75801H (17 February 2010); doi: 10.1117/12.841650
Show Author Affiliations
Christian Wirth, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. (Germany)
Thomas Schreiber, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Miroslaw Rekas, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Igor Tsybin, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Thomas Peschel, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Ramona Eberhardt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Andreas Tünnermann, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. (Germany)


Published in SPIE Proceedings Vol. 7580:
Fiber Lasers VII: Technology, Systems, and Applications
Kanishka Tankala, Editor(s)

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