Mechanical loss in state-of-the-art amorphous optical coatings
We present the results of mechanical characterizations of many different high-quality optical coatings made of ion-beam-sputtered titania-doped tantala and silica, developed originally for interferometric gravitational-wave detectors. Our data show that in multilayer stacks (like high-reflection Bra...
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| Veröffentlicht in: | Physical review. D 2016-01, Vol.93 (1), Article 012007 |
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| container_title | Physical review. D |
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| creator | Granata, Massimo Saracco, Emeline Morgado, Nazario Cajgfinger, Alix Cagnoli, Gianpietro Degallaix, Jérôme Dolique, Vincent Forest, Danièle Franc, Janyce Michel, Christophe Pinard, Laurent Flaminio, Raffaele |
| description | We present the results of mechanical characterizations of many different high-quality optical coatings made of ion-beam-sputtered titania-doped tantala and silica, developed originally for interferometric gravitational-wave detectors. Our data show that in multilayer stacks (like high-reflection Bragg mirrors, for example) the measured coating dissipation is systematically higher than the expectation and is correlated with the stress condition in the sample. This has a particular relevance for the noise budget of current advanced gravitational-wave interferometers, and, more generally, for any experiment involving thermal-noise-limited optical cavities. |
| doi_str_mv | 10.1103/PhysRevD.93.012007 |
| format | Article |
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| source | American Physical Society Journals |
| subjects | Budgeting Condensed Matter Detectors Dissipation Gravitation Gravitational waves Interferometers Materials Science Optical coatings Optics Physics State of the art |
| title | Mechanical loss in state-of-the-art amorphous optical coatings |
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