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

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

Research output: Contribution to journalArticle

71 Scopus citations


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
Issue number10
StatePublished - Nov 10 2008
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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