LIGO Document P0900079-v2

Probing the atomic structure of amorphous Ta2O5 mirror coatings for advanced gravitational wave detectors using transmission electron microscopy

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P - Publications
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Advanced generations of ground-based gravitational wave detectors will use ultra-low-loss amorphous dielectric multilayer mirror coatings in order to minimise thermal noise, a limiting factor in detector sensitivity. Transmission electron microscopy is a promising way to probe the atomic structure of these coatings in an effort to better understand the causes of the observed mechanical loss (internal friction) and hence thermal noise.
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