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Direct Observation of Broadband Coating Thermal Noise in a Suspended Interferometer

Eric D. Black·Akira Villar·Kyle Barbary·Adam Bushmaker·Jay Heefner·Seiji Kawamura·Fumiko Kawazoe·Luca Matone·Sharon Meidt·Shanti R. Rao·Kevin Schulz·Michael Zhang·Kenneth G. Libbrecht
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Abstract

We have directly observed broadband thermal noise in silica/tantala coatings in a high-sensitivity Fabry-Perot interferometer. Our result agrees well with the prediction based on indirect, ring-down measurements of coating mechanical loss, validating that method as a tool for the development of advanced interferometric gravitational-wave detectors.

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Eric D. Black, Akira Villar, Kyle Barbary, Adam Bushmaker, Jay Heefner, Seiji Kawamura, Fumiko Kawazoe, Luca Matone, Sharon Meidt, Shanti R. Rao, Kevin Schulz, Michael Zhang, Kenneth G. Libbrecht. 2005-04-22. Direct Observation of Broadband Coating Thermal Noise in a Suspended Interferometer. https://doi.org/10.1016/j.physleta.2004.05.052

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