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Frequency dependence of thermal noise in gram-scale cantilever flexures

Nguyen, Thanh; Mow-Lowry, Conor M; Slagmolen, Bram; Miller, John; Mullavey, Adam; Gossler, S; Altin, Paul; Shaddock, Daniel; McClelland, David


We present measurements of the frequency dependence of thermal noise in aluminum and niobium flexures. Our measurements cover the audio-frequency band from 10 Hz to 10 kHz, which is of particular relevance to ground-based interferometric gravitational wave detectors, and span up to an order of magnitude above and below the fundamental flexure resonances. Results from two flexures are well explained by a simple model in which both structural and thermoelastic loss play a role. The ability of...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Physical Review D-Particles, Fields, Gravitation and Cosmology
DOI: 10.1103/PhysRevD.92.112004
Access Rights: Open Access


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