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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. 31, Iss. 9 — Sep. 1, 2014
  • pp: 1984–1992

Optical forces from evanescent Bessel beams, multiple reflections, and Kerker conditions in magnetodielectric spheres and cylinders

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


JOSA A, Vol. 31, Issue 9, pp. 1984-1992 (2014)
http://dx.doi.org/10.1364/JOSAA.31.001984


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Abstract

In this work we address, first, the optical force on a magnetodielectric particle on a flat dielectric surface due to an evanescent Bessel beam and, second, the effects on the force of multiple scattering with the substrate. For the first question we find analytical solutions showing that due to the interference of the excited electric and magnetic particle dipoles, the vertical force unusually pushes the object out from the plane. The incident wavelength rules whether or not the illumination constitutes an optical trap. As for the second problem, we make a 2D study with a single evanescent plane wave, and we present the Kerker conditions (so far established for spheres) for magnetodielectric cylinders, showing that in p polarization these conditions are practically reproduced by the latter particles and are associated to minima of the horizontal and vertical forces.

© 2014 Optical Society of America

OCIS Codes
(240.6690) Optics at surfaces : Surface waves
(290.4210) Scattering : Multiple scattering
(290.5850) Scattering : Scattering, particles
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Scattering

History
Original Manuscript: May 13, 2014
Revised Manuscript: July 25, 2014
Manuscript Accepted: July 25, 2014
Published: August 14, 2014

Citation
Juan Miguel Auñón and Manuel Nieto-Vesperinas, "Optical forces from evanescent Bessel beams, multiple reflections, and Kerker conditions in magnetodielectric spheres and cylinders," J. Opt. Soc. Am. A 31, 1984-1992 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-9-1984

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