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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 29, Iss. 7 — Jul. 1, 2012
  • pp: 1389–1398

Optical forces on small particles from partially coherent light

Juan Miguel Auñón and Manuel Nieto-Vesperinas  »View Author Affiliations


JOSA A, Vol. 29, Issue 7, pp. 1389-1398 (2012)
http://dx.doi.org/10.1364/JOSAA.29.001389


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Abstract

We put forward a theory on the optical force exerted upon a dipolar particle by a stationary and ergodic partially coherent light field. We show through a rigorous analysis that the ensemble averaged electromagnetic force is given in terms of a partial gradient of the space-variable diagonal elements of the coherence tensor. Further, by following this result we characterize the conservative and nonconservative components of this force. In addition, we establish the propagation law for the optical force in terms of the coherence function of light at a diffraction plane. This permits us to evaluate the effect of the degree of coherence on the force components by using the archetypical configuration of Young’s two-aperture diffraction pattern, so often employed to characterize coherence of waves.

© 2012 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.6600) Coherence and statistical optics : Statistical optics
(260.2110) Physical optics : Electromagnetic optics
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: January 26, 2012
Revised Manuscript: April 11, 2012
Manuscript Accepted: April 11, 2012
Published: June 21, 2012

Virtual Issues
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Juan Miguel Auñón and Manuel Nieto-Vesperinas, "Optical forces on small particles from partially coherent light," J. Opt. Soc. Am. A 29, 1389-1398 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-7-1389

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