Titania-doped tantala/silica coatings for gravitational-wave detection
By G. Harry, M. Abernathy, A. E. Becerra-Toledo, H. Armandula, E. Black, K. Dooley, M. Eichenfield, Chinyere Nwabugwu, A. Villar, D. Crooks and 16 more. 2006
239 citations recorded by the source corpus.
Reducing thermal noise from optical coatings is crucial to reaching the required sensitivity in next generation interferometric gravitational-wave detectors. Here we show that adding TiO2 to Ta2O5 in Ta2O5/SiO2 coatings reduces the internal friction and in addition present data confirming it reduces thermal noise. We also show that TiO2-doped Ta2O5/SiO2 coatings are close to satisfying the optical absorption requirements of second generation gravitational-wave detectors.
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/9136ec870dd4426e346d3402ed68eae4170eecdb
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In Astronomy and Astrophysics
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Citations in the corpus
- GW150914: The Advanced LIGO Detectors in the Era of First Discoveries (2016, background): “The mirror coatings, a dielectric multilayer of silica and titania-doped tantala [30,31], were developed to provide the required high reflectivity while minimizing coating thermal noise [32–34]; at design, it will eventually limit the sensitivity around 60 Hz [3].”
- Gravitational Radiation Detection with Laser Interferometry (2013, background): “…this loss on type of material, number of layers, and layer structure have been studied extensively (Bassiri et al. , 2012; Braginsky and Vyatchanin, 2003; Evans et al. , 2012; Flaminio et al. , 2010; Harry et al. , 2007, 2006, 2002; Hong et al. , 2012; Kondratiev et al. , 2011; Penn et al. , 2003).”