Measurement of the restoring forces acting on two optically bound particles from normal mode correlations

N. K. Metzger, R. F. Marchington, M. Mazilu, R. L. Smith, K. Dholakia, Ewan M Wright

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Optical binding along the axis of two counterpropagating laser fields may be used to organize microparticles into longitudinal, spatially separated, arrays. Here we investigate correlations between the displacements of two optically bound microparticles from their equilibrium positions due to noise. Measurement of the decay time of the correlation functions of the center of mass and relative normal modes is shown to provide an in situ method to determine the optical restoring forces acting on the bound particles, thereby providing a test of our physical understanding of longitudinal optical binding.

Original languageEnglish (US)
Article number068102
JournalPhysical Review Letters
Volume98
Issue number6
DOIs
StatePublished - Feb 7 2007

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microparticles
center of mass
decay
lasers

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Measurement of the restoring forces acting on two optically bound particles from normal mode correlations. / Metzger, N. K.; Marchington, R. F.; Mazilu, M.; Smith, R. L.; Dholakia, K.; Wright, Ewan M.

In: Physical Review Letters, Vol. 98, No. 6, 068102, 07.02.2007.

Research output: Contribution to journalArticle

Metzger, N. K. ; Marchington, R. F. ; Mazilu, M. ; Smith, R. L. ; Dholakia, K. ; Wright, Ewan M. / Measurement of the restoring forces acting on two optically bound particles from normal mode correlations. In: Physical Review Letters. 2007 ; Vol. 98, No. 6.
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