Thermo-optic noise in coated mirrors for high-precision optical measurements

M. Evans, Stefan Ballmer, M. Fejer, P. Fritschel, G. Harry, G. Ogin

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Abstract

Thermal fluctuations in the coatings used to make high reflectors are becoming significant noise sources in precision optical measurements and are particularly relevant to advanced gravitational-wave detectors. There are two recognized sources of coating thermal noise; mechanical loss and thermal dissipation. Thermal dissipation causes thermal fluctuations in the coating which produce noise via the thermoelastic and thermorefractive mechanisms. We treat these mechanisms coherently, give a correction for finite coating thickness, and evaluate the implications for Advanced LIGO.

Original languageEnglish (US)
Article number102003
JournalPhysical Review D
Volume78
Issue number10
DOIs
StatePublished - Nov 10 2008
Externally publishedYes

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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