论文信息 - Photon-pressure-induced test mass deformation in gravitational-wave detectors

Photon-pressure-induced test mass deformation in gravitational-wave detectors

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 paper, 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 GEO 600, we measured that this effect modifies the standard response function by 10% at 1 kHz and about 100% at 2.5 kHz.

[1] S. Hild. Beyond the First Generation: Extending the Science Range of the Gravitational Wave Detector GEO600 , 2007 .

[2] Joshua R. Smith,et al. A photon pressure calibrator for the GEO 600 gravitational wave detector , 2006 .

[3] Daniel Sigg,et al. Commissioning of LIGO detectors , 2004 .

[4] Martin M. Fejer,et al. Mechanical quality factor measurements of monolithically suspended fused silica test masses of the GEO 600 gravitational wave detector , 2004 .

[5] Ryutaro Takahashi,et al. Status of TAMA300 , 2004 .

[6] Joshua R. Smith,et al. The status of GEO 600 , 2004, SPIE Astronomical Telescopes + Instrumentation.

[7] J. Hough,et al. Calibration of the Glasgow 10 m prototype laser interferometric gravitational wave detector using photon pressure , 2001 .

[8] Thermoelastic noise and homogeneous thermal noise in finite sized gravitational-wave test masses , 2000, gr-qc/0002055.

[9] Patrice Hello,et al. Thermal noise in mirrors of interferometric gravitational wave antennas , 1998 .