Angular instability due to radiation pressure in the LIGO gravitational-wave detector

被引:28
|
作者
Hirose, Eiichi [3 ]
Kawabe, Keita [1 ]
Sigg, Daniel [1 ]
Adhikari, Rana [2 ]
Saulson, Peter R. [3 ]
机构
[1] Hanford Observ, Laser Interferometer Gravitat Wave Observ LIGO, Richland, WA 99354 USA
[2] CALTECH, LIGO Lab, Pasadena, CA 91125 USA
[3] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA
基金
美国国家科学基金会;
关键词
RESONANT OPTICAL INTERFEROMETERS; ALIGNMENT; PRINCIPLES;
D O I
10.1364/AO.49.003474
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We observed the effect of radiation pressure on the angular sensing and control system of the Laser Interferometer Gravitational-Wave Observatory (LIGO) interferometer's core optics at LIGO Hanford Observatory. This is the first measurement of this effect in a complete gravitational-wave interferometer. Only one of the two angular modes survives with feedback control, because the other mode is suppressed when the control gain is sufficiently large. We developed a mathematical model to understand the physics of the system. This model matches well with the dynamics that we observe. (C) 2010 Optical Society of America
引用
收藏
页码:3474 / 3484
页数:11
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