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  Double optical spring enhancement for gravitational wave detectors

Rehbein, H., Müller-Ebhardt, H., Somiya, K., Danilishin, S. L., Schnabel, R., Danzmann, K., et al. (2008). Double optical spring enhancement for gravitational wave detectors. Physical Review D, 78(6): 062003. doi:10.1103/PhysRevD.78.062003.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-6DAC-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-6DB0-C
Genre: Journal Article

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PhRevD78-062003.pdf (Publisher version), 559KB
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 Creators:
Rehbein, Henning1, Author              
Müller-Ebhardt, Helge1, Author              
Somiya, Kentaro1, Author              
Danilishin, Stefan L.1, Author
Schnabel, Roman1, Author              
Danzmann, Karsten1, Author              
Chen, Yanbei2, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_24010              
2Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Free keywords: gr-qc
 Abstract: Currently planned second-generation gravitational-wave laser interferometers such as Advanced LIGO exploit the extensively investigated signal-recycling technique. Candidate Advanced LIGO configurations are usually designed to have two resonances within the detection band, around which the sensitivity is enhanced: a stable optical resonance and an unstable optomechanical resonance—which is upshifted from the pendulum frequency due to the so-called optical-spring effect. As an alternative to a feedback control system, we propose an all-optical stabilization scheme, in which a second optical spring is employed, and the test mass is trapped by a stable ponderomotive potential well induced by two carrier light fields whose detunings have opposite signs. The double optical spring also brings additional flexibility in reshaping the noise spectral density and optimizing toward specific gravitational-wave sources. The presented scheme can be extended easily to a multi-optical-spring system that allows further optimization.

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Language(s): eng - English
 Dates: 2008-09-16
 Publication Status: Published online
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Title: Physical Review D
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Pages: - Volume / Issue: 78 (6) Sequence Number: 062003 Start / End Page: - Identifier: ISSN: 1089-4918