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

Hild, S. et al. (2007) Photon-pressure-induced test mass deformation in gravitational-wave detectors. Classical and Quantum Gravity, 24(22), pp. 5681-5688. (doi: 10.1088/0264-9381/24/22/025)

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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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Martin, Dr Iain and Hild, Professor Stefan and Strain, Professor Kenneth
Authors: Hild, S., Brinkmann, M., Danzmann, K., Grote, H., Hewitson, M., Hough, J., Luck, H., Martin, I., Mossavi, K., Rainer, M., Reid, S., Smith, J.R., Strain, K., Weinert, M., Willems, P., Willke, B., and Winkler, W.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Classical and Quantum Gravity
Publisher:Institute of Physics
ISSN (Online):1361-6382

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
459312Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/I001085/1Physics and Astronomy