Calculation of thermal noise in grating reflectors

Дата и время публикации : 2013-08-30T08:31:06Z

Авторы публикации и институты :
Daniel Heinert
Stefanie Kroker
Daniel Friedrich
Stefan Hild
Ernst-Bernhard Kley
Sean Leavey
Iain W. Martin
Ronny Nawrodt
Andreas Tünnermann
Sergey P. Vyatchanin
Kazuhiro Yamamoto

Ссылка на журнал-издание: Phys. Rev. D 88, 042001, 2013
Коментарии к cтатье: 17 pages, 11 figures
Первичная категория: gr-qc

Все категории : gr-qc, astro-ph.IM

Краткий обзор статьи: Grating reflectors have been repeatedly discussed to improve the noise performance of metrological applications due to the reduction or absence of any coating material. So far, however, no quantitative estimate on the thermal noise of these reflective structures exists. In this work we present a theoretical calculation of a grating reflector’s noise. We further apply it to a proposed 3rd generation gravitational wave detector. Depending on the grating geometry, the grating material and the temperature we obtain a thermal noise decrease by up to a factor of ten compared to conventional dielectric mirrors. Thus the use of grating reflectors can substantially improve the noise performance in metrological applications.

Category: Physics