4.6 Article

Spectral narrowing of parametrically pumped thermomechanical noise

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APPLIED PHYSICS LETTERS
卷 117, 期 3, 页码 -

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AMER INST PHYSICS
DOI: 10.1063/5.0009848

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资金

  1. National Science Foundation Collaborative Research Program [CMMI-1662464]
  2. National Science Foundation (NSF) as part of the National Nanotechnology Coordinated Infrastructure [ECCS-1542152]
  3. Defense Advanced Research Projects Agency Precise Robust Inertial Guidance for Munitions (PRIGM) Program
  4. National Defense Science and Engineering Graduate (NDSEG) Fellowship
  5. E.K. Potter Stanford Graduate Fellowship
  6. NSF [CMMI-1662619, CMMI-1561829]

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We derive the displacement noise spectrum of a parametrically pumped resonator below the onset for self-excited oscillations. We extend the fluctuation-dissipation response of a thermomechanical-noise-driven resonator to the case of degenerate parametric pumping as a function of pump magnitude and frequency while properly accounting for the quadrature-dependence of the parametric thermal noise squeezing. We use measurements with a microelectromechanical cantilever to corroborate our model. (C) 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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