Arm-length stabilisation for interferometric gravitational-wave detectors using frequency-doubled auxiliary lasers
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Evans_Arm-length stabilisation.pdf
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Author(s)
Mullavey, Adam J.
Slagmolen, Bram J. J.
Miller, John
Sigg, Daniel
Shaddock, Daniel A.
McClelland, David E.
Waldman, Samuel J.
Evans, Matthew J
Fritschel, Peter K
Date Issued
December 2011
Journal
Optics Express
Publisher
Optical Society of America
Citation
Mullavey, Adam J., Bram J. J. Slagmolen, John Miller, Matthew Evans, Peter Fritschel, Daniel Sigg, Sam J. Waldman, Daniel A. Shaddock, and David E. McClelland. “Arm-Length Stabilisation for Interferometric Gravitational-Wave Detectors Using Frequency-Doubled Auxiliary Lasers.” Optics Express 20, no. 1 (January 2, 2012): 81.
Version
Author's final manuscript
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
https://doi.org/10.1364/OE.20.000081
