Wide-band measurement of mechanical thermal noise using a laser interferometer

被引：5
|
作者：
Kajima, M [1 ]
Kusumi, N [1 ]
Moriwaki, S [1 ]
Mio, N [1 ]
机构：
[1] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
来源：
PHYSICS LETTERS A | 1999年 / 263卷 / 1-2期
关键词：
gravitational wave detector; fluctuation-dissipation theorem; thermal noise;
D O I：
10.1016/S0375-9601(99)00636-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have measured the displacement thermal noise of a mechanical cantilever, made of phosphor bronze, using a laser interferometer. The measured noise spectrum agrees well with an estimation based on the fluctuation-dissipation theorem with a mechanical-admittance measurement. The frequency range where we could measure the thermal noise was from 50 to 500 Hz; this range is important for the noise characterization of interferometric gravitational wave detectors. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：21 / 26
页数：6
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