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Proceedings Paper

Er-doped single-frequency photonic crystal fiber amplifier with 70 W of output power for gravitational wave detection
Author(s): Vincent Kuhn; Dietmar Kracht; Jörg Neumann; Peter Weßels
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Paper Abstract

We report on a single-frequency large mode area Er-doped photonic crystal fiber amplifier system. The active fiber had a core with 40 μm diameter and a numerical aperture of <0.04. This resulted in a mode field diameter of about 31 μm around 1550 nm wavelength. In a master-oscillator power-amplifier scheme, 70.8 W of output power at 1556 nm have been obtained. The maximum output power was limited by the amount of available pump power. Very high fractional TEM00 content - and thus near diffraction limited output beam quality - has been verified by measurements with a non-confocal scanning ring cavity.

Paper Details

Date Published: 15 February 2012
PDF: 6 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82371G (15 February 2012); doi: 10.1117/12.906353
Show Author Affiliations
Vincent Kuhn, Laser Zentrum Hannover e.V. (Germany)
Ctr. for Quantum-Engineering and Space-Time Research (Germany)
Dietmar Kracht, Laser Zentrum Hannover e.V. (Germany)
Ctr. for Quantum-Engineering and Space-Time Research (Germany)
Jörg Neumann, Laser Zentrum Hannover e.V. (Germany)
Ctr. for Quantum-Engineering and Space-Time Research (Germany)
Peter Weßels, Laser Zentrum Hannover e.V. (Germany)
Ctr. for Quantum-Engineering and Space-Time Research (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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