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Stringent upper-limit on monolithic optical cavity length noise for gravitational wave detectors

Abstract : The Advanced Virgo detector uses two monolithic optical cavities at its output port to suppress higher order modes and radio frequency side-bands from the carrier light used for gravitational wave detection. These two cavities in series form the output mode cleaner. We present a measured upper limit on the length noise of these cavities that is consistent with the thermo-refractive noise prediction of 8×10−16m/Hz1/2 at 15Hz. The cavity length is controlled using Peltier cells and piezo-electric actuators to maintain resonance on the incoming light. A length lock precision of 3.5×10−13m is achieved. These two results are combined to demonstrate that the length noise of the output mode cleaner is at least a factor 10 below other expected noise sources in the Advanced Virgo detector design configuration.
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http://hal.in2p3.fr/in2p3-01484260
Contributor : Claudine Bombar <>
Submitted on : Tuesday, March 7, 2017 - 9:35:44 AM
Last modification on : Friday, April 24, 2020 - 2:40:18 PM

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R. Bonnand, M. Ducrot, R. Gouaty, F. Marion, A. Masserot, et al.. Stringent upper-limit on monolithic optical cavity length noise for gravitational wave detectors. Classical and Quantum Gravity, IOP Publishing, 2017, 34, pp.175002. ⟨10.1088/1361-6382/aa7f64⟩. ⟨in2p3-01484260⟩

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