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Thermal noise of beam splitters in laser gravitational wave detectorsстатья
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: 26 декабря 2018 г.
- Авторы: Dickmann J., Kroker S., Nawrodt R., Vyatchanin S.
- Журнал: Physical Review D
- Том: 98
- Год издания: 2018
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 082002-1
- Последняя страница: 082002-15
- DOI: 10.1103/PhysRevD.98.082002
- Аннотация: We present the calculation of thermal noise in interferometric gravitational-wave detectors due to the thermal fluctuations of the beam splitter (BS). This work makes use of a recently developed method of analysis of thermal noise in mirrors from first principles, based on the fluctuation dissipation theorem. The evaluation of BS thermal noise is carried out for the two different gravitational wave observatories, GEO600 and the Advanced Laser Interferometer Gravitational Wave Observatory (aLIGO). The analysis evaluates thermal noise from both the substrate and the optical reflective and antireflective stacks located on the BS surface. We demonstrate that the fluctuations of both reflecting and antireflecting surfaces significantly contribute to the total thermal noise of the BS. The oscillating intensity pattern couples small-scale distortions of the surface to the overall phase readout, and therefore increases the overall thermal noise. In the case of aLIGO, the BS contribution is with 0.3% negligibly small. At a frequency of 500 Hz, the BS causes about 10% of GEO600’s sensitivity limit. BS noise impairs the feasible sensitivity of the GEO-HF design proposal by about 50%.
- Добавил в систему: Вятчанин Сергей Петрович