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Frequency stabilization and noise-induced spectral narrowing in resonators with zero dispersion
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Huang, L., Soskin, S. M., Khovanov, I. A., Mannella, R., Ninios, K. and Chan, H. B. (2019) Frequency stabilization and noise-induced spectral narrowing in resonators with zero dispersion. Nature Communications, 10 (1). doi:10.1038/s41467-019-11946-8
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WRAP-frequency-stabilization-noise-induced-spectral-narrowing-resonators-zero-dispersion-Khovanov-2019.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1053Kb) | Preview |
Official URL: http://dx.doi.org/10.1038/s41467-019-11946-8
Abstract
Mechanical resonators are widely used as precision clocks and sensitive detectors that rely on the stability of their eigenfrequencies. The phase noise is determined by different factors including thermal noise, frequency noise of the resonator and noise in the feedback circuitry. Increasing the vibration amplitude can mitigate some of these effects but the improvements are limited by nonlinearities that are particularly strong for miniaturized micro- and nano-mechanical systems. Here we design a micromechanical resonator with non-monotonic dependence of the eigenfrequency on energy. Near the extremum, where the dispersion of the eigenfrequency is zero, the system regains certain characteristics of a linear resonator, albeit at large amplitudes. The spectral peak undergoes narrowing when the noise intensity is increased. With the resonator serving as the frequency-selecting element in a feedback loop, the phase noise at the extremum amplitude is ~3 times smaller than the minimal noise in the conventional nonlinear regime.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Engineering | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Resonators , Electronic noise | ||||||||||||
| Journal or Publication Title: | Nature Communications | ||||||||||||
| Publisher: | Nature Publishing Group | ||||||||||||
| ISSN: | 2041-1723 | ||||||||||||
| Official Date: | 2 September 2019 | ||||||||||||
| Dates: |
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| Date of first compliant deposit: | 3 September 2019 | ||||||||||||
| Volume: | 10 | ||||||||||||
| Number: | 1 | ||||||||||||
| DOI: | 10.1038/s41467-019-11946-8 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Open Access | ||||||||||||
| RIOXX Funder/Project Grant: |
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