Arm-length stabilisation for interferometric gravitational-wave detectors using frequency-doubled auxiliary lasers
Date
2011-12-14
Authors
Mullavey, Adam J.
Slagmolen, Bram J. J.
Miller, John
Evans, Matthew
Fritschel, Peter
Sigg, Daniel
Waldman, Sam J.
Shaddock, Daniel A.
McClelland, David E.
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Society of America
Abstract
Residual motion of the arm cavity mirrors is expected to prove one of the
principal impediments to systematic lock acquisition in advanced
gravitational-wave interferometers. We present a technique which overcomes this
problem by employing auxiliary lasers at twice the fundamental measurement
frequency to pre-stabilise the arm cavities' lengths. Applying this approach,
we reduce the apparent length noise of a 1.3 m long, independently suspended
Fabry-Perot cavity to 30 pm rms and successfully transfer longitudinal control
of the system from the auxiliary laser to the measurement laser.
Description
Keywords
Keywords: Cavity mirror; Fabry-Perot cavity; Gravitational wave detectors; Lock acquisition; Measurement frequency; Residual motion; Fabry-Perot interferometers; Gravity waves; Longitudinal control; Mirrors; article; artifact; equipment; equipment design; gravity;
Citation
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Source
Optics Express
Type
Journal article
Book Title
Entity type
Access Statement
Open Access