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Optical coatings for gravitational wave detection

Harry, Gregory M. and Armandula, Helena and Black, Eric and Crooks, D. R. M. and Cagnoli, Gianpietro and Fejer, Martin M. and Hough, Jim and Penn, Steven D. and Rowan, Sheila and Route, Roger and Sneddon, Peter (2004) Optical coatings for gravitational wave detection. In: Advances in Thin Film Coatings for Optical Applications. Proceedings of SPIE. No.5527. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 33-40. ISBN 9780819454652. http://resolver.caltech.edu/CaltechAUTHORS:20190221-110526711

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Abstract

Gravitational waves are a prediction of Einstein's General Theory of Relativity. Astrophysical events like supernova and binary neutron star inspirals are predicted to create potentially detectable waves. The Laser Interferometer Gravitational-wave Observatory (LIGO) is an experiment to detect these waves using Michelson interferometers with 4 km long arms. The effect of gravitational waves, even on an interferometer with such a long baseline, is extremely, with mirror displacements around 10^(-18)m. Reducing noise is thus a primary design criterion. For the next generation interferometers now being designed, thermal noise from the optical coatings of the interferometer mirrors could prove a problematic limiting noise source. Reducing the mechanical loss of these coatings to improve thermal noise, while preserving the sub-ppm optical absorption, low scatter, and high reflectivity needed in the interferometer is an important area of research.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.555780DOIArticle
Additional Information:© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). The LIGO Observatories were constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation under cooperative agreement PHY 9210038. The LIGO Laboratory operates under cooperative agreement PHY-0107417. This paper has been assigned LIGO Document Number LIGO-P040023-00-D.
Group:LIGO
Funders:
Funding AgencyGrant Number
NSFPHY-9210038
NSFPHY-0107417
Subject Keywords:optical coatings, astronomy, interferometry
Other Numbering System:
Other Numbering System NameOther Numbering System ID
LIGO DocumentP040023-00-D
Record Number:CaltechAUTHORS:20190221-110526711
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190221-110526711
Official Citation:Gregory M. Harry, Helena Armandula, Eric Black, David R.M. Crooks, Gianpietro Cagnoli, Martin M. Fejer, Jim Hough, Steven D. Penn, Sheila Rowan, Roger Route, and Peter Sneddon "Optical coatings for gravitational wave detection", Proc. SPIE 5527, Advances in Thin Film Coatings for Optical Applications, (29 September 2004); doi: 10.1117/12.555780; https://doi.org/10.1117/12.555780
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93134
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:25 Feb 2019 21:55
Last Modified:25 Feb 2019 21:55

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