"Scattered light problems in high precision interferometry", by Stefan Hild (Birmingham)

One of the main noise sources encountered during the commissioning of 1st generation gravitational wave detectors is stray light. The actual sensitivity of the GEO600 GW-detector could potentially be degraded by stray light contributions of the order 1e-20 W. I'm going to describe the experience that was gained by studying stray light effects in the GEO600 interferometer and try to give a brief guide how to avoid, identify and eliminate stray light noise.

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