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Title:
Direct observation of broadband coating thermal noise in a suspended interferometer
Authors:
Black, Eric D.; Villar, Akira; Barbary, Kyle; Bushmaker, Adam; Heefner, Jay; Kawamura, Seiji; Kawazoe, Fumiko; Matone, Luca; Meidt, Sharon; Rao, Shanti R.; Schulz, Kevin; Zhang, Michael; Libbrecht, Kenneth G.
Affiliation:
AA(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA; ), AB(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AC(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AD(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AE(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AF(National Astronomical Observatory of Japan, 2-21-1 Osawa, Tokyo 181-8588, Japan), AG(National Astronomical Observatory of Japan, 2-21-1 Osawa, Tokyo 181-8588, Japan), AH(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AI(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AJ(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AK(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AL(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA), AM(LIGO Project, California Institute of Technology Mail Code 264-33, Pasadena, CA 91125, USA)
Publication:
Physics Letters A, Volume 328, Issue 1, p. 1-5.
Publication Date:
07/2004
Origin:
ELSEVIER
Keywords:
Gravitational waves, Interferometry, Thermal noise
Abstract Copyright:
(c) 2004 Elsevier Science B.V. All rights reserved.
DOI:
10.1016/j.physleta.2004.05.052
Bibliographic Code:
2004PhLA..328....1B

Abstract

We have directly observed broadband thermal noise in silica/tantala coatings in a high-sensitivity Fabry-Perot interferometer. Our result agrees well with the prediction based on indirect, ring-down measurements of coating mechanical loss, validating that method as a tool for the development of advanced interferometric gravitational-wave detectors.
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Physics
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