Calculation of thermal noise in grating reflectors

Calculation of thermal noise in grating reflectors
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光栅反射器热噪声的计算

DOI:
10.1103/physrevd.88.042001
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发表时间:
2013
期刊:
影响因子:
5
通讯作者:
K. Yamamoto
K. Yamamoto
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D. Heinert;S. Kroker;D. Friedrich;S. Hild;E.-B. Kley;S. Leavey;I. W. Martin;R. Nawrodt;A. Tünnermann;S. P. Vyatchanin;K. Yamamoto

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由于减少或不使用任何涂层材料,光栅反射器已被反复讨论以提高计量应用的噪声性能。然而,到目前为止,还没有对这些反射结构的热噪声进行定量估计。在这项工作中,我们提出了光栅反射器噪声的理论计算。我们进一步将其应用于所提出的第三代引力波探测器。根据光栅几何形状、光栅材料和温度,与传统介质镜相比,我们的热噪声降低了 10 倍。因此,使用光栅反射器可以显着提高计量应用中的噪声性能。
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 third 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 10 compared to conventional dielectric mirrors. Thus the use of grating reflectors can substantially improve the noise performance in metrological applications.
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
I. Martin
通讯作者: I. Martin