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

Abstract : 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.
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Journal articles
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Contributor : Dominique Girod <>
Submitted on : Thursday, March 15, 2007 - 10:25:05 AM
Last modification on : Thursday, November 21, 2019 - 2:07:08 AM

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G.M. Harry, M.R. Abernathy, A.E. Becerra-Toledo, H. Armandula, E. Black, et al.. Titania-doped tantala/silica coatings for gravitational-wave detection. Classical and Quantum Gravity, IOP Publishing, 2007, 24, pp.405-415. ⟨10.1088/0264-9381/24/2/008⟩. ⟨in2p3-00136704⟩



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