引力波探测器中光子压力引起的测试质量变形
Photon pressure induced test mass deformation in gravitational-wave detectors
摘要：
到目前为止，在引力波团体中广泛使用的假设是，对于检测频带中的频率，即对于远低于第一内部共振的频率，测试质量像刚体一样起作用。在这篇文章中，我们证明，局部化的力量，例如由光子压力致动器，可以导致一个不可忽略的弹性形变的测试群众。对于引力波探测器GEO600中使用的光子压力致动器设置，我们测量到这种效应在1 kHz下将标准响应函数修改10%，在2.5 kHz下修改约100%。
英文摘要：
A widely used assumption within the gravitational-wave community has so far been that a test mass acts like a rigid body for frequencies in the detection band, i.e. for frequencies far below the first internal resonance. In this article we demonstrate that localized forces, applied for example by a photon pressure actuator, can result in a non-negligible elastic deformation of the test masses. For a photon pressure actuator setup used in the gravitational wave detector GEO600 we measured that this effect modifies the standard response function by 10% at 1 kHz and about 100% at 2.5 kHz.
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