Narrow-linewidth fiber amplifier for gravitational-wave detectors | Zendy

A. Buikema | Zendy; Franklin José | Zendy; Steven J. Augst | Zendy; Peter Fritschel | Zendy; N. Mavalvala | Zendy

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Narrow-linewidth fiber amplifier for gravitational-wave detectors

Author(s) -

A. Buikema,

Franklin José,

Steven J. Augst,

Peter Fritschel,

N. Mavalvala

Publication year - 2019

Publication title -

optics letters

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.44.003833

Subject(s) - optics , laser linewidth , detector , cladding (metalworking) , amplifier , ligo , multi mode optical fiber , physics , fiber laser , optoelectronics , optical fiber , materials science , laser , cmos , metallurgy

We report on the design and noise performance of a narrow-linewidth Yb-doped fiber amplifier emitting up to 178 W at 1064 nm for possible use in gravitational-wave (GW) interferometric detectors. The novel design utilizes a specialty large-mode-area gain fiber with confined-core doping and depressed cladding, followed by a smaller-core passive fiber to improve output beam quality. We show that the free-running noise of the system is equal to or better than current Advanced LIGO noise requirements. Finally, we discuss potential improvements for long-term use in GW detectors.

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