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Interferometers for displacement-noise-free gravitational-wave detection

Chen, Yanbei, Pai, Archana, Somiya, Kentaro, Kawamura, Seiji, Sato, Shuichi, Kokeyama, Keiko, Ward, Robert L., Goda, Keisuke and Mikhailov, Eugeniy E. 2006. Interferometers for displacement-noise-free gravitational-wave detection. Physical Review Letters 97 (15) , 151103. 10.1103/PhysRevLett.97.151103

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Abstract

We propose a class of displacement- and laser-noise-free gravitational-wave-interferometer configurations, which does not sense nongeodesic mirror motion and laser noise, but provides a nonvanishing gravitational-wave signal. Our interferometers consist of four mirrors and two beam splitters, which form four Mach-Zehnder interferometers. By contrast to previous works, no composite mirrors with multiple reflective surfaces are required. Each mirror in our configuration is sensed redundantly, by at least two pairs of incident and reflected beams. Displacement- and laser-noise-free detection is achieved when output signals from these four interferometers are combined appropriately. Our 3-dimensional interferometer configuration has a low-frequency response proportional to f 2 , which is better than the f 3 achievable by previous 2-dimensional configurations.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Physical Society
ISSN: 0031-9007
Date of First Compliant Deposit: 19 March 2021
Date of Acceptance: 25 May 2006
Last Modified: 27 May 2021 10:00
URI: http://orca.cardiff.ac.uk/id/eprint/139941

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