Parametric resonance of optically trapped aerosols

R. Di. Leonardo, G. Ruocco, J. Leach, M.J. Padgett, A. J. Wright, J.M. Girkin, D.R. Burnham, D. McGloin

Research output: Contribution to journalArticle

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Abstract

The Brownian dynamics of an optically trapped water droplet are investigated across the transition from over- to underdamped oscillations. The spectrum of position fluctuations evolves from a Lorentzian shape typical of overdamped systems (beads in liquid solvents) to a damped harmonic oscillator spectrum showing a resonance peak. In this later underdamped regime, we excite parametric resonance by periodically modulating the trapping power at twice the resonant frequency. The power spectra of position fluctuations are in excellent agreement with the obtained analytical solutions of a parametrically modulated Langevin equation.
LanguageEnglish
Pages010601/1-010601/4
Number of pages4
JournalPhysical Review Letters
Volume99
Issue number1
DOIs
Publication statusPublished - 5 Jul 2007

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aerosols
beads
harmonic oscillators
resonant frequencies
power spectra
trapping
oscillations
liquids
water

Keywords

  • Brownian dynamics
  • optically trapped water droplet
  • parametric resonance
  • optics

Cite this

Leonardo, R. D., Ruocco, G., Leach, J., Padgett, M. J., Wright, A. J., Girkin, J. M., ... McGloin, D. (2007). Parametric resonance of optically trapped aerosols. Physical Review Letters, 99(1), 010601/1-010601/4. https://doi.org/10.1103/PhysRevLett.99.010601
Leonardo, R. Di. ; Ruocco, G. ; Leach, J. ; Padgett, M.J. ; Wright, A. J. ; Girkin, J.M. ; Burnham, D.R. ; McGloin, D. / Parametric resonance of optically trapped aerosols. In: Physical Review Letters. 2007 ; Vol. 99, No. 1. pp. 010601/1-010601/4.
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Leonardo, RD, Ruocco, G, Leach, J, Padgett, MJ, Wright, AJ, Girkin, JM, Burnham, DR & McGloin, D 2007, 'Parametric resonance of optically trapped aerosols' Physical Review Letters, vol. 99, no. 1, pp. 010601/1-010601/4. https://doi.org/10.1103/PhysRevLett.99.010601

Parametric resonance of optically trapped aerosols. / Leonardo, R. Di.; Ruocco, G.; Leach, J.; Padgett, M.J.; Wright, A. J.; Girkin, J.M.; Burnham, D.R.; McGloin, D.

In: Physical Review Letters, Vol. 99, No. 1, 05.07.2007, p. 010601/1-010601/4.

Research output: Contribution to journalArticle

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T1 - Parametric resonance of optically trapped aerosols

AU - Leonardo, R. Di.

AU - Ruocco, G.

AU - Leach, J.

AU - Padgett, M.J.

AU - Wright, A. J.

AU - Girkin, J.M.

AU - Burnham, D.R.

AU - McGloin, D.

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N2 - The Brownian dynamics of an optically trapped water droplet are investigated across the transition from over- to underdamped oscillations. The spectrum of position fluctuations evolves from a Lorentzian shape typical of overdamped systems (beads in liquid solvents) to a damped harmonic oscillator spectrum showing a resonance peak. In this later underdamped regime, we excite parametric resonance by periodically modulating the trapping power at twice the resonant frequency. The power spectra of position fluctuations are in excellent agreement with the obtained analytical solutions of a parametrically modulated Langevin equation.

AB - The Brownian dynamics of an optically trapped water droplet are investigated across the transition from over- to underdamped oscillations. The spectrum of position fluctuations evolves from a Lorentzian shape typical of overdamped systems (beads in liquid solvents) to a damped harmonic oscillator spectrum showing a resonance peak. In this later underdamped regime, we excite parametric resonance by periodically modulating the trapping power at twice the resonant frequency. The power spectra of position fluctuations are in excellent agreement with the obtained analytical solutions of a parametrically modulated Langevin equation.

KW - Brownian dynamics

KW - optically trapped water droplet

KW - parametric resonance

KW - optics

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DO - 10.1103/PhysRevLett.99.010601

M3 - Article

VL - 99

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Leonardo RD, Ruocco G, Leach J, Padgett MJ, Wright AJ, Girkin JM et al. Parametric resonance of optically trapped aerosols. Physical Review Letters. 2007 Jul 5;99(1):010601/1-010601/4. https://doi.org/10.1103/PhysRevLett.99.010601