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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Franco Gori
  • Vol. 30, Iss. 5 — May. 1, 2013
  • pp: 916–922

Radiation forces on a Rayleigh particle by highly focused partially coherent and radially polarized vortex beams

Jianhua Shu, Ziyang Chen, and Jixiong Pu  »View Author Affiliations

JOSA A, Vol. 30, Issue 5, pp. 916-922 (2013)

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The radiation force of highly focused partially coherent and radially polarized vortex beams on a Rayleigh particle is theoretically studied. The dependence of the radiation force on coherence lengths, beam widths, topological charges of incident vortex beams, and numerical apertures of an objective is analyzed. The transverse scattering force is also investigated. It is found that the azimuthal scattering force can produce torques with respect to the optical axis if the optical tweezers are constructed by the vortex beams carrying orbit angular momentum. The direction of the torque depends on the sign of the topological charge of vortex beams, and the magnitude of the torque increases with the increase of the value of the topological charge. A Rayleigh particle can revolve around the optical axis driven by the vortex beams.

© 2013 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(260.5430) Physical optics : Polarization
(350.4855) Other areas of optics : Optical tweezers or optical manipulation
(260.6042) Physical optics : Singular optics

ToC Category:
Coherence and Statistical Optics

Original Manuscript: October 9, 2012
Revised Manuscript: February 4, 2013
Manuscript Accepted: March 15, 2013
Published: April 16, 2013

Jianhua Shu, Ziyang Chen, and Jixiong Pu, "Radiation forces on a Rayleigh particle by highly focused partially coherent and radially polarized vortex beams," J. Opt. Soc. Am. A 30, 916-922 (2013)

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