Hirose Eiichi, Kawabe Keita, Sigg Daniel, Adhikari Rana, Saulson Peter R
Department of Physics, Syracuse University, Syracuse, New York 13244, USA.
Appl Opt. 2010 Jun 20;49(18):3474-84. doi: 10.1364/AO.49.003474.
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.
我们在LIGO汉福德天文台观测了辐射压力对激光干涉引力波天文台（LIGO）干涉仪核心光学元件的角度传感与控制系统的影响。这是在完整的引力波干涉仪中对该效应的首次测量。在反馈控制下，两个角度模式中只有一个得以保留，因为当控制增益足够大时，另一个模式会被抑制。我们开发了一个数学模型来理解该系统的物理原理。这个模型与我们观测到的动力学现象匹配良好。
