Measurements of a low-temperature mechanical dissipation peak

doi:10.1088/0264-9381/25/5/055005

Measurements of a low-temperature mechanical dissipation peak in a single layer of Ta₂O₅ doped with TiO₂

I Martin et al 2008 Class. Quantum Grav. 25 055005 (8pp) doi: 10.1088/0264-9381/25/5/055005

This is an Editor's Choice article.

PDF (375 KB) | References | Articles citing this article

I Martin¹, H Armandula², C Comtet³, M M Fejer⁴, A Gretarsson⁵, G Harry⁶, J Hough¹, J-M M Mackowski³, I MacLaren¹, C Michel³, J-L Montorio³, N Morgado³, R Nawrodt⁷, S Penn⁸, S Reid¹, A Remillieux³, R Route⁴, S Rowan¹, C Schwarz⁷, P Seidel⁷, W Vodel⁷ and A Zimmer⁷
¹ SUPA, University of Glasgow, Glasgow G12 8QQ, Scotland
² LIGO Laboratory, California Institute of Technology, Pasadena, CA 91125, USA
³ Laboratoire des Matériaux Avancés, LMA, CNRS-IN2P3, France
⁴ Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305-4088, USA
⁵ Embry-Riddle Aeronautical University, Prescott, AZ 86301, USA
⁶ LIGO Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
⁷ Friedrich-Schiller University, Jena, PF 07737 Jena, Germany
⁸ Department of Physics, Hobart and William Smith Colleges, Geneva, New York, 14456, USA
E-mail: i.martin@physics.gla.ac.uk

Abstract. Thermal noise arising from mechanical dissipation in oxide coatings is a major limitation to many precision measurement systems, including optical frequency standards, high-resolution optical spectroscopy and interferometric gravity wave detectors. Presented here are measurements of dissipation as a function of temperature between 7 K and 290 K in ion-beam-sputtered Ta₂O₅ doped with TiO₂, showing a loss peak at 20 K. Analysis of the peak provides the first evidence of the source of dissipation in doped Ta₂O₅ coatings, leading to possibilities for the reduction of thermal noise effects.

PACS numbers: 05.40.Jc, 61.43.Er, 68.60.Bs, 04.80.Nn, 95.55.Ym, 42.60.Da

Print publication: Issue 5 (7 March 2008)
Received 13 November 2007, in final form 14 January 2008
Published 12 February 2008

Post to CiteUlike |

Post to Connotea |

Post to Bibsonomy

Measurements of a low-temperature mechanical dissipation peak in a single layer of Ta₂O₅ doped with TiO₂

Find related articles

Article options

Authors & Referees

Measurements of a low-temperature mechanical dissipation peak in a single layer of Ta2O5 doped with TiO2

Find related articles

Article options

Authors & Referees

Measurements of a low-temperature mechanical dissipation peak in a single layer of Ta₂O₅ doped with TiO₂