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Proceedings Paper

800 W cw nearly diffraction-limited beam delivery through a 100 m long multi-mode fiber
Author(s): Armin Austerschulte; Moritz M. Vogel; Thomas Rataj; Jan-Philipp Negel; Andreas Voss; Marwan Abdou Ahmed; Thomas Graf
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Paper Abstract

We present the nearly diffraction-limited propagation of 800 W of cw laser power through 100 m of delivery fiber having a core diameter of 30 μm. The laser source was a single-mode MOPA consisting of a fiber oscillator and two amplifier stages and was matched to the delivery fiber through a 500 mm long taper. At a maximum power of 800 W, a M2 value of 1.35 was measured after 100 m of passive fiber. A minor Stokes-shifted spectral content was observed above 780 W.

Paper Details

Date Published: 15 February 2012
PDF: 7 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82370I (15 February 2012); doi: 10.1117/12.907782
Show Author Affiliations
Armin Austerschulte, Univ. Stuttgart (Germany)
Moritz M. Vogel, Univ. Stuttgart (Germany)
Thomas Rataj, Univ. Stuttgart (Germany)
Jan-Philipp Negel, Univ. Stuttgart (Germany)
Andreas Voss, Univ. Stuttgart (Germany)
Marwan Abdou Ahmed, Univ. Stuttgart (Germany)
Thomas Graf, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

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