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Development of a polarimetry method toward in situ substrate birefringence characterization of ground-based gravitational wave detectors

Tanioka, Satoshi, Pearce, Terri and Kokeyama, Keiko ORCID: https://orcid.org/0000-0002-2896-1992 2025. Development of a polarimetry method toward in situ substrate birefringence characterization of ground-based gravitational wave detectors. Review of Scientific Instruments 96 (7) , 074503. 10.1063/5.0279006

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Abstract

Improving the sensitivity of gravitational wave detectors is necessary to enrich scientific outcome of gravitational wave astronomy. Birefringence in test mass mirrors of gravitational wave detectors can become an important factor for both current and next-generation gravitational wave detectors to achieve improved performance. In situ birefringence characterization can become an essential diagnostic tool for detector performance and needs to be established. We report a possible in situ birefringence characterization method and its experimental results with a tabletop setup. The scheme proposed and demonstrated in this paper can be used as a diagnostic tool in large-scale gravitational wave detectors. We also discuss possible technological developments toward implementation in future gravitational wave detectors.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Schools > Physics and Astronomy
Publisher: American Institute of Physics
ISSN: 0034-6748
Date of First Compliant Deposit: 12 August 2025
Date of Acceptance: 9 July 2025
Last Modified: 12 Aug 2025 10:00
URI: https://orca.cardiff.ac.uk/id/eprint/180350

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