S Hild et al 2007 Class. Quantum Grav. 24 5681 doi:10.1088/0264-9381/24/22/025
S Hild1, M Brinkmann1, K Danzmann1, H Grote1, M Hewitson1, J Hough1, H Lück1, I Martin2, K Mossavi1, N Rainer1, S Reid2, J R Smith3, K Strain2, M Weinert1, P Willems4, B Willke1 and W Winkler1
Show affiliationsA 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.
04.80.Nn Gravitational wave detectors and experiments
Issue 22 (21 November 2007)
Received 9 August 2007, in final form 28 September 2007
Published 6 November 2007
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