Published January 21, 2007
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Journal Article
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Titania-doped tantala/silica coatings for gravitational-wave detection
- Creators
- Harry, Gregory M.
- Abernathy, Matthew R.
- Becerra-Toledo, Andres E.
- Armandula, Helena
- Black, Eric
- Dooley, Kate
- Eichenfield, Matt
- Nwabugwu, Chinyere
- Villar, Akira
- Crooks, D. R. M.
- Cagnoli, Gianpietro
- Hough, Jim
- How, Colin R.
- MacLaren, Ian
- Murray, Peter
- Reid, Stuart
- Rowan, Sheila
- Sneddon, Peter H.
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Fejer, Martin M.
- Route, Roger
- Penn, Steven D.
- Ganau, Patrick
- Mackowski, Jean-Marie
- Michel, Chrisophe
- Pinard, Laurent
- Remillieux, Alban
Abstract
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.
Additional Information
Copyright © Institute of Physics and IOP Publishing Limited 2007. Received 21 September 2006, in final form 20 November 2006. Published 8 December 2006. Print publication: Issue 2 (21 January 2007) The LIGO Observatories were constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation under cooperative agreement PHY-9210038. The LIGO Laboratory operates under cooperative agreement PHY-0107417. We thank Zhigang Pan and Slawomir Gras for checking the thermal noise formulae. We also gratefully acknowledge funding from NSF grant PHY-0355118(HWS). This paper has been assigned LIGO Document Number LIGOP050048-00-R.Files
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Additional details
- Eprint ID
- 7068
- Resolver ID
- CaltechAUTHORS:HARcqg07
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2007-01-08Created from EPrint's datestamp field
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2022-07-12Created from EPrint's last_modified field