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Journal Articles Optics Letters Year : 2013

Cryogenic measurements of mechanical loss of high-reflectivity coating and estimation of thermal noise

K. Craig
  • Function : Author
W. Cunningham
  • Function : Author
J. Degallaix
M. Hart
  • Function : Author
J.-S. Hennig
  • Function : Author
J. Hough
  • Function : Author
I. Maclaren
  • Function : Author
I. W. Martin
  • Function : Author
S. Rowan
  • Function : Author

Abstract

We report on low-frequency measurements of the mechanical loss of a high-quality (transmissivity T<5 ppm at λ0=1064 nm, absorption loss <0.5 ppm) multilayer dielectric coating of ion-beam-sputtered fused silica and titanium-doped tantala in the 10-300 K temperature range. A useful parameter for the computation of coating thermal noise on different substrates is derived as a function of temperature and frequency.
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Dates and versions

in2p3-00919923 , version 1 (17-12-2013)

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M. Granata, K. Craig, G. Cagnoli, C. Carcy, W. Cunningham, et al.. Cryogenic measurements of mechanical loss of high-reflectivity coating and estimation of thermal noise. Optics Letters, 2013, 38, pp.5268-5271. ⟨10.1364/OL.38.005268⟩. ⟨in2p3-00919923⟩
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