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

Granata, M. et al. (2013) Cryogenic measurements of mechanical loss of high-reflectivity coating and estimation of thermal noise. Optics Letters, 38(24), pp. 5268-5271. (doi: 10.1364/OL.38.005268) (PMID:24322234)

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Publisher's URL: http://dx.doi.org/10.1364/OL.38.005268

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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cagnoli, Dr Gianpietro and Rowan, Professor Sheila and Martin, Dr Iain and Hough, Professor James and MacLaren, Dr Ian and Craig, Mr Kieran and Cunningham, Dr Liam and HART, Martin
Authors: Granata, M., Craig, K., Cagnoli, G., Carcy, C., Cunningham, W., Degallaix, J., Flaminio, R., Forest, D., HART, M., Hennig, J.-S., Hough, J., MacLaren, I., Martin, I. W., Michel, C., Morgado, N., Otmani, S., Pinard, L., and Rowan, S.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Institute for Gravitational Research
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN:0146-9592
ISSN (Online):1539-4794

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
459313Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/J000361/1P&A - PHYSICS & ASTRONOMY
459311Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)PP/F001118/1P&A - PHYSICS & ASTRONOMY
624341Investigations in Gravitational RadiationSheila RowanScience & Technologies Facilities Council (STFC)ST/L000946/1S&E P&A - PHYSICS & ASTRONOMY