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Development of a signal-extraction scheme for resonant sideband extraction

Kokeyama, K., Somiya, K., Kawazoe, F., Sato, S., Kawamura, S. and Sugamoto, A. 2008. Development of a signal-extraction scheme for resonant sideband extraction. Classical and Quantum Gravity 25 (23) , 235013. 10.1088/0264-9381/25/23/235013

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As a future plan, an advanced gravitational-wave detector will employ an optical configuration of resonant sideband extraction (RSE), achieved with an additional mirror at the signal-detection port of the power-recycled Fabry–Perot Michelson interferometer. To control the complex coupled cavity system, one of the most important design issues is how to extract the longitudinal control signals of the cavities. We have developed a new signal-extraction scheme which provides an appropriate sensing matrix. The new method uses two sets of sidebands: one of the sideband components satisfies the critical coupling condition for the RSE interferometer and reaches the signal-extraction port, and the other sideband is completely reflected by the Michelson interferometer. They provide a diagonalized sensing matrix and enable the RSE control to be robust.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: IOP Publishing
ISSN: 0264-9381
Date of First Compliant Deposit: 19 March 2021
Date of Acceptance: 17 November 2008
Last Modified: 02 Nov 2021 11:41

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