Structural thermal noise in gram-scale mirror oscillators
Name
Neben-2012-Structural thermal noise in gram-scale mirror oscillators.pdf
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799.07 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Neben, Abraham Richard
Bodiya, Timothy Paul
Wipf, Christopher
Oelker, Eric Glenn
Corbitt, Thomas R.
Mavalvala, Nergis
Date Issued
November 2012
Journal
New Journal of Physics
Publisher
IOP Publishing
Citation
Neben, Abraham R et al. “Structural Thermal Noise in Gram-scale Mirror Oscillators.” New Journal of Physics 14.11 (2012): 115008.
Version
Final published version
Abstract
The thermal noise associated with mechanical dissipation is a ubiquitous limitation to the sensitivity of precision experiments ranging from frequency stabilization to gravitational wave interferometry. We report on the thermal noise limits to the performance of 1 gm mirror oscillators that are part of a cavity optomechanics experiment to observe quantum radiation pressure noise. Thermal noise limits the observed cavity displacement spectrum from 80 Hz to 5 kHz. We present a calculation of the thermal noise, based on finite element analysis of the dissipation due to structural damping, and find it to be in excellent agreement with the experimental result. We conclude with the predicted thermal noise for an improved oscillator design, which should be capable of revealing the noise that arises from quantum backaction in this system.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
LIGO (Observatory : Massachusetts Institute of Technology)
Terms of Use
Creative Commons Attribution 3.0
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1088/1367-2630/14/11/115008
