Er-doped single-frequency photonic crystal fiber amplifier with 70 W of output power for gravitational wave detection

Vincent Kuhn; Dietmar Kracht; Jörg Neumann; Peter Weßels

doi:10.1117/12.906353

15 February 2012 Er-doped single-frequency photonic crystal fiber amplifier with 70 W of output power for gravitational wave detection

Vincent Kuhn, Dietmar Kracht, Jörg Neumann, Peter Weßels

Author Affiliations +

Proceedings Volume 8237, Fiber Lasers IX: Technology, Systems, and Applications; 82371G (2012) https://doi.org/10.1117/12.906353
Event: SPIE LASE, 2012, San Francisco, California, United States

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.

Citation Download Citation

Vincent Kuhn, Dietmar Kracht, Jörg Neumann, and Peter Weßels "Er-doped single-frequency photonic crystal fiber amplifier with 70 W of output power for gravitational wave detection", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82371G (15 February 2012); https://doi.org/10.1117/12.906353

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