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Impact of upconverted scattered light on advanced interferometric gravitational wave detectors
2012
March 26 2012
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Abstract
Second generation gravitational wave detectors are being installed in a number of
locations globally. These long-baseline, Michelson interferometers increase the sensitivity
between 10 and 40 Hz by many orders of magnitude compared with first generation instruments.
Control of non-linear noise coupling from scattered light fields is critical to achieve
low frequency performance. In this paper we investigate the requirements on the attenuation
of scattered light using a novel time-domain analysis and two years of seismic data
from the LIGO Livingston Observatory.