High-reflection coatings for gravitational-wave detectors: State of the art and future developments
- Amato, Alex
- Cagnoli, Gianpietro
- Canepa, Maurizio
- Coillet, Elodie
- Degallaix, Jerome
- Dolique, Vincent
- Forest, Daniele
- Granata, Massimo
- Martinez, Val\ue9 Rie
- Michel, Christophe
- Pinard, Laurent
- Sassolas, Benoit
- Teillon, Julien
Publication date
January 2018
DOI Publisher
IOP Publishing Language
EnglishAbstract
We report on the optical, mechanical and structural characterization of the sputtered coating materials of Advanced LIGO, Advanced Virgo and KAGRA gravitational-waves detectors. We present the latest results of our research program aiming at decreasing coating thermal noise through doping, optimization of deposition parameters and post-deposition annealing. Finally, we propose sputtered Si3N4as a candidate material for the mirrors of future detectors
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