Low temperature mechanical dissipation of an ion-beam sputtered silica film

Martin, I.W. et al. (2014) Low temperature mechanical dissipation of an ion-beam sputtered silica film. Classical and Quantum Gravity, 31(3), 035019. (doi:10.1088/0264-9381/31/3/035019)

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Publisher's URL: http://dx.doi.org/10.1088/0264-9381/31/3/035019

Abstract

Thermal noise arising from mechanical dissipation in oxide mirror coatings is an important limit to the sensitivity of future gravitational wave detectors, optical atomic clocks and other precision measurement systems. Here, we present measurements of the temperature dependence of the mechanical dissipation of an ion-beam sputtered silica film between 10 and 300 K. A dissipation peak was observed at 20 K and the low temperature dissipation was found to have significantly different characteristics than observed for bulk silica and silica films deposited by alternative techniques. These results are important for better understanding the underlying mechanisms of mechanical dissipation, and thus thermal noise, in the most commonly-used reflective coatings for precision measurements.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Nawrodt, Dr Ronny and Reid, Professor Stuart and Craig, Mr Kieran and Penn, Professor Steven and Rowan, Professor Sheila and Martin, Dr Iain and Hough, Professor James and Bassiri, Mr Riccardo
Authors: Martin, I.W., Nawrodt, R., Craig, K., Schwarz, C., Bassiri, R., Harry, G., Hough, J., Penn, S., Reid, S., Robie, R., and Rowan, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Classical and Quantum Gravity
Publisher:IOP Publishing
ISSN:0264-9381
ISSN (Online):1361-6382
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Classical and Quantum Gravity 31(3):035019
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
459311Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)PP/F001118/1P&A - PHYSICS & ASTRONOMY
616251ET R&DIain MartinScience & Technologies Facilities Council (STFC)ST/L000806/1S&E P&A - PHYSICS & ASTRONOMY
459313Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/J000361/1P&A - PHYSICS & ASTRONOMY
624341Investigations in Gravitational RadiationSheila RowanScience & Technologies Facilities Council (STFC)ST/L000946/1S&E P&A - PHYSICS & ASTRONOMY