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  Local readout enhancement for detuned signal-recycling interferometers

Müller-Ebhardt, H., Rehbein, H., Schnabel, R., Danzmann, K., Chen, Y., Li, C., et al. (2007). Local readout enhancement for detuned signal-recycling interferometers. Physical Review D, 76(6): 062002. doi:10.1103/PhysRevD.76.062002.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-47EB-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-47ED-5
Genre: Journal Article

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 Creators:
Müller-Ebhardt, Helge1, Author              
Rehbein, Henning1, Author              
Schnabel, Roman1, Author              
Danzmann, Karsten1, Author              
Chen, Yanbei2, Author              
Li, Chao1, 3, Author
Somiya, Kentaro1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
2Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              
3Theoretical Gravitational Wave Physics, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24015              

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 Abstract: Motivated by the optical-bar scheme of Braginsky, Gorodetsky and Khalili, we propose to add to a high power detuned signal-recycling interferometer a local readout scheme which measures the motion of the arm-cavity front mirror. At low frequencies this mirror moves together with the arm-cavity end mirror, under the influence of gravitational waves. This scheme improves the low-frequency quantum-noise-limited sensitivity of optical-spring interferometers significantly and can be considered as a incorporation of the optical-bar scheme into currently planned second-generation interferometers. On the other hand it can be regarded as an extension of the optical bar scheme. Taking compact-binary inspiral signals as an example, we illustrate how this scheme can be used to improve the sensitivity of the planned Advanced LIGO interferometer, in various scenarios, using a realistic classical-noise budget. We also discuss how this scheme can be implemented in Advanced LIGO with relative ease.

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 Dates: 2007-09
 Publication Status: Published in print
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 Identifiers: eDoc: 318023
DOI: 10.1103/PhysRevD.76.062002
Other: arXiv:0705.2987
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Title: Physical Review D
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Pages: - Volume / Issue: 76 (6) Sequence Number: 062002 Start / End Page: - Identifier: -