LIGO Document G1600396-v1

Mirror scattering loss analysis by integrating sphere measurement

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Scattering measurement using an integrating sphere is used to measure the loss into a narrow cone ( 1 degree) together with large angle scattering. It is shown that some defects could reflect fields back to narrow regions around the incident field, and the loss data using large angle ( > 1 degree) measurement can be underestimation of the total scattering loss.
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