Arm-length stabilisation for interferometric gravitational-wave detectors using frequency-doubled auxiliary lasers

Adam J. Mullavey; Bram J.J. Slagmolen; John Miller; Matthew Evans; Peter Fritschel; Daniel Sigg; Sam J. Waldman; Daniel A. Shaddock; David E. McClelland

doi:10.1364/OE.20.000081

Arm-length stabilisation for interferometric gravitational-wave detectors using frequency-doubled auxiliary lasers

Adam J. Mullavey^*, Bram J.J. Slagmolen, John Miller, Matthew Evans, Peter Fritschel, Daniel Sigg, Sam J. Waldman, Daniel A. Shaddock, David E. McClelland

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

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.

Original language	English
Pages (from-to)	81-89
Number of pages	9
Journal	Optics Express
Volume	20
Issue number	1
DOIs	https://doi.org/10.1364/OE.20.000081
Publication status	Published - 2 Jan 2012

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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.",

author = "Mullavey, {Adam J.} and Slagmolen, {Bram J.J.} and John Miller and Matthew Evans and Peter Fritschel and Daniel Sigg and Waldman, {Sam J.} and Shaddock, {Daniel A.} and McClelland, {David E.}",

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AU - Mullavey, Adam J.

AU - Slagmolen, Bram J.J.

AU - Miller, John

AU - Evans, Matthew

AU - Fritschel, Peter

AU - Sigg, Daniel

AU - Waldman, Sam J.

AU - Shaddock, Daniel A.

AU - McClelland, David E.

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N2 - 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.

AB - 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.

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Arm-length stabilisation for interferometric gravitational-wave detectors using frequency-doubled auxiliary lasers

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