Direct measurement of coating thermal noise in optical resonators

Author(s)
Gras, Slawomir; Evans, Matthew J
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Abstract
The best measurements of space and time currently possible (e.g., gravitational-wave detectors and optical reference cavities) rely on optical resonators, and are ultimately limited by thermally induced fluctuations in the reflective coatings which form the resonator. We present measurements of coating thermal noise in the audio band and show that for a standard ion-beam sputtered coating, the power spectrum of the noise does not have the expected power-law behavior.
Date issued
2018-12
URI
http://hdl.handle.net/1721.1/119682
Department
MIT Kavli Institute for Astrophysics and Space Research
Journal
Physical Review D
Publisher
American Physical Society
Citation
Gras, S. and M. Evans. "Direct measurement of coating thermal noise in optical resonators." Physical Review D 98 (2018), 122001.
Version: Final published version
ISSN
2470-0010
2470-0029
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