HAL : in2p3-00136704, version 1

arXiv : gr-qc/0610004

DOI : 10.1088/0264-9381/24/2/008

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Classical and Quantum Gravity 24 (2007) 405-415

Titania-doped tantala/silica coatings for gravitational-wave detection

G.M. Harry, M.R. Abernathy, A.E. Becerra-Toledo, H. Armandula, E. Black, K. Dooley, M. Eichenfield, C. Nwabugwu, A. Villar, D.R.M. Crooks, G. Cagnoli, J. Hough, C.R. How, I. Maclaren, P. Murray, S. Reid, S. Rowan, P.H. Sneddon, M.M. Fejer, R. Route, S.D. Penn, P. Ganau, J.M. Mackowski1, C. Michel1, L. Pinard1, A. Remillieux1

(2007)

Reducing thermal noise from optical coatings is crucial to reaching the required sensitivity in next generation interferometric gravitational-waves detectors. Here we show that adding TiO$_2$ to Ta$_2$O$_5$ in Ta$_2$O$_5$/SiO$_2$ coatings reduces the internal friction and in addition present data confirming it reduces thermal noise. We also show that TiO$_2$-doped Ta$_2$O$_5$/SiO$_2$ coatings are close to satisfying the optical absorption requirements of second generation gravitational-wave detectors.

1 :	LMA - Laboratoire des matériaux avancés

Thème(s)

:

Physique/Relativité Générale et Cosmologie Quantique

in2p3-00136704, version 1

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Contributeur : Dominique Girod <>

Soumis le : Jeudi 15 Mars 2007, 10:25:05

Dernière modification le : Jeudi 15 Mars 2007, 11:15:32