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Thermal effects in the Input Optics of the Enhanced Laser Interferometer Gravitational-Wave Observatory

Dooley, Katherine ORCID: https://orcid.org/0000-0002-1636-0233, Arain, Muzammil A., Feldbaum, David, Frolov, Valery V., Heintze, Matthew, Hoak, Daniel, Khazanov, Efim A., Lucianetti, Antonio, Martin, Rodica M., Mueller, Guido, Palashov, Oleg, Quetschke, Volker, Reitze, David H., Savage, R. L., Tanner, D. B., Williams, Luke F. and Wu, Wan 2012. Thermal effects in the Input Optics of the Enhanced Laser Interferometer Gravitational-Wave Observatory. Review of Scientific Instruments 83 (3) , 033109. 10.1063/1.3695405

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Abstract

We present the design and performance of the LIGO Input Optics subsystem as implemented for the sixth science run of the LIGO interferometers. The Initial LIGO Input Optics experienced thermal side effects when operating with 7 W input power. We designed, built, and implemented improved versions of the Input Optics for Enhanced LIGO, an incremental upgrade to the Initial LIGO interferometers, designed to run with 30 W input power. At four times the power of Initial LIGO, the Enhanced LIGO Input Optics demonstrated improved performance including better optical isolation, less thermal drift, minimal thermal lensing and higher optical efficiency. The success of the Input Optics design fosters confidence for its ability to perform well in Advanced LIGO.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Institute of Physics
ISSN: 0034-6748
Last Modified: 23 Oct 2022 12:50
URI: https://orca.cardiff.ac.uk/id/eprint/108808

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