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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 13 — Jun. 21, 2010
  • pp: 14238–14244

Longitudinal optical trapping and sizing of aerosol droplets

A. E. Carruthers, J. P. Reid, and A. J. Orr-Ewing  »View Author Affiliations

Optics Express, Vol. 18, Issue 13, pp. 14238-14244 (2010)

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We present evidence that aerosol droplets, ~1-2μm in diameter, can be optically bound over a 4mm distance within a volume formed by the overlap of the central cores and rings of two counterpropagating Bessel beams. The sizes of the individual polydisperse aerosol particles can be estimated from the angular variation of the elastic light scattering. Scattered light from the two orthogonally polarized trapping beams and from a Gaussian probe beam of different wavelength can be used to provide independent estimations of size. The coalescence of two droplets was observed and characterized.

© 2010 OSA

OCIS Codes
(010.1110) Atmospheric and oceanic optics : Aerosols
(140.7010) Lasers and laser optics : Laser trapping
(290.4020) Scattering : Mie theory
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: May 5, 2010
Revised Manuscript: June 11, 2010
Manuscript Accepted: June 11, 2010
Published: June 17, 2010

A. E. Carruthers, J. P. Reid, and A. J. Orr-Ewing, "Longitudinal optical trapping and sizing of aerosol droplets," Opt. Express 18, 14238-14244 (2010)

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