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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 22 — Nov. 15, 2005
  • pp: 3039–3041

Interactions between spherical nanoparticles optically trapped in Laguerre-Gaussian modes

David S. Bradshaw and David L. Andrews  »View Author Affiliations


Optics Letters, Vol. 30, Issue 22, pp. 3039-3041 (2005)
http://dx.doi.org/10.1364/OL.30.003039


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Abstract

When a Laguerre-Gaussian (LG) laser mode is used to trap nanoparticles, the spatial disposition of the particles about the beam axis is determined by a secondary mechanism that engages the input radiation with the interparticle potential. This analysis, based on the identification of a range-dependent laser-induced energy shift, elicits and details features that arise for spherical nanoparticles irradiated by a LG mode. Calculations of the absolute minima are performed for LG beams of variable topological charge, and the results are displayed graphically. It is shown that more complex ordered structures emerge on extension to three- and four-particle systems and that similar principles will apply to other kinds of radially structured optical mode.

© 2005 Optical Society of America

OCIS Codes
(020.5580) Atomic and molecular physics : Quantum electrodynamics
(140.7010) Lasers and laser optics : Laser trapping
(220.4880) Optical design and fabrication : Optomechanics
(260.2110) Physical optics : Electromagnetic optics
(270.5580) Quantum optics : Quantum electrodynamics
(290.5890) Scattering : Scattering, stimulated

ToC Category:
Trapping

Citation
David S. Bradshaw and David L. Andrews, "Interactions between spherical nanoparticles optically trapped in Laguerre-Gaussian modes," Opt. Lett. 30, 3039-3041 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-22-3039


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