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ID: 411236.0, MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy
Broadband squeezing of quantum noise in a Michelson interferometer with Twin-Signal-Recycling
Authors:Thüring, Andre; Gräf, Christian; Vahlbruch, Henning; Mehmet, Moritz; Danzmann, Karsten; Schnabel, Roman
Date of Publication (YYYY-MM-DD):2009
Title of Journal:Optics Letters
Volume:34
Issue / Number:6
Start Page:824
End Page:826
Review Status:not specified
Audience:Not Specified
Abstract / Description:Twin-Signal-Recycling (TSR) builds on the resonance doublet of two optically coupled cavities and efficiently enhances the sensitivity of an interferometer at a dedicated signal frequency. We report on what we believe to be the first experimental realization of a TSR Michelson interferometer and also its broadband enhancement by squeezed light injection. The complete setup was stably locked, and a broadband quantum noise reduction of the interferometers shot noise by a factor of up to 4 dB was demonstrated. The system was characterized by measuring its quantum noise spectra for several tunings of the TSR cavities. We found good agreement between the experimental results and numerical simulations.
External Publication Status:published
Document Type:Article
Communicated by:Karsten Danzmann
Affiliations:MPI für Gravitationsphysik/Laser Interferometry & Gravitational Wave Astronomy
MPI für Gravitationsphysik/Teilinstitut Hannover
Identifiers:DOI:10.1364/OL.34.000824
URL:http://www.opticsinfobase.org/ol/abstract.cfm?URI=...
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