800 W cw nearly diffraction-limited beam delivery through a 100 m long multi-mode fiber

Armin Austerschulte; Moritz M. Vogel; Thomas Rataj; Jan-Philipp Negel; Andreas Voss; Marwan Abdou Ahmed; Thomas Graf

doi:10.1117/12.907782

15 February 2012 800 W cw nearly diffraction-limited beam delivery through a 100 m long multi-mode fiber

Armin Austerschulte, Moritz M. Vogel, Thomas Rataj, Jan-Philipp Negel, Andreas Voss, Marwan Abdou Ahmed, Thomas Graf

Proceedings Volume 8237, Fiber Lasers IX: Technology, Systems, and Applications; 82370I (2012) https://doi.org/10.1117/12.907782
Event: SPIE LASE, 2012, San Francisco, California, United States

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.

Citation Download Citation

Armin Austerschulte, Moritz M. Vogel, Thomas Rataj, Jan-Philipp Negel, Andreas Voss, Marwan Abdou Ahmed, and Thomas Graf "800 W cw nearly diffraction-limited beam delivery through a 100 m long multi-mode fiber", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82370I (15 February 2012); https://doi.org/10.1117/12.907782

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