Frequency and surface dependence of the mechanical loss in fused silica

Abstract

We have compiled measurements of the mechanical loss in fused silica from samples spanning a wide range of geometries and resonant frequency in order to model the known variation of the loss with frequency and surface-to-volume ratio. This improved understanding of the mechanical loss has contributed significantly to the design of advanced interferometric gravitational wave detectors, which require ultra-low loss materials for their test mass mirrors.

5 pages, 3 figure but 5 figure files

References in corpus (9)

• Thermal noise in interferometric gravitational wave detectors due to dielectric optical coatings
• Thermodynamical fluctuations and photo-thermal shot noise in gravitational wave antennae
• Mechanical Loss in Tantala/Silica Dielectric Mirror Coatings
• Dissipation of mechanical energy in fused silica fibers
• Spectral Shape of Relaxations in Silica Glass
• Very high quality factor measured in annealed fused silica
• High quality factor measured in fused silica
• Systematic measurement of the intrinsic losses in various kinds of bulk fused silica
• Comparison of advanced gravitational-wave detectors

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