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Trade-off between quantum and thermal fluctuations in mirror coatings yields improved sensitivity of gravitational-wave interferometersстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
- Авторы: Voronchev N.V., Danilishin S.L., Khalili F.Ya
- Журнал: Physical Review D
- Том: 86
- Номер: 12
- Год издания: 2012
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 122003
- DOI: 10.1103/PhysRevD.86.122003
- Аннотация: We propose a simple way to improve the sensitivity of laser gravitational-wave detectors and other high-precision laser interferometric position meters by means of reduction of the number of reflective coating layers of the core optics mirrors. This effects in the proportional decrease of the coating thermal noise, the most notorious among the interferometer’s technical noise sources. The price for this is increased quantum noise, as well as high requirements for the pump laser power and, therefore, power at the beam splitter, the power-recycling mirror, and the arm cavities’ input mirror substrates. However, as far as these processes depend differently on the coating thickness, we demonstrate that a certain trade-off is possible. In the particular case of large-scale laser gravitational-wave detectors, this trade-off yields a 20–30% gain (for diverse gravitational-wave signal types and interferometer configurations), provided that increased laser power (comparable with that planned for the third-generation gravitational-wave detectors) becomes available, and that it will be possible to mitigate the increased thermal effects caused by absorption in the beam splitter and input mirrors.
- Добавил в систему: Ворончев Никита Викторович