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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 36 — Dec. 20, 2008
  • pp: 6701–6709

Gaussian beam scattering by two parallel nonabsorbing dielectric cylinders: displacement and rotational degrees of freedom

André Gondim Simão, José Paulo Rodrigues Furtado de Mendonça, Luiz Gallisa Guimarães, and Pedro Cláudio Guaranho de Moraes  »View Author Affiliations


Applied Optics, Vol. 47, Issue 36, pp. 6701-6709 (2008)
http://dx.doi.org/10.1364/AO.47.006701


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Abstract

An extension of the problem of a moderately focused Gaussian beam scattered by an arrangement of two parallel nonabsorbing dielectric cylinders of arbitrary refraction indexes and radii is developed. The feature introduced in the present solution is the relative angular position coordinate between the two cylinders ( ϕ 0 ) as a degree of freedom. Explicit dependence on this variable of scattering coefficients, beam shape coefficient, and extinction efficiency is given. Together with the displacement coordinate d, various other scattering configurations can be studied. The applicability of the solution is given in the form of extinction curves taking ϕ 0 as the main parameter for variation. The model is proposed as a means of investigating evanescent wave microscopy.

© 2008 Optical Society of America

OCIS Codes
(260.5740) Physical optics : Resonance
(290.2200) Scattering : Extinction
(290.5850) Scattering : Scattering, particles

ToC Category:
Scattering

History
Original Manuscript: June 25, 2008
Revised Manuscript: October 23, 2008
Manuscript Accepted: October 28, 2008
Published: December 11, 2008

Citation
André Gondim Simão, José Paulo Rodrigues Furtado de Mendonça, Luiz Gallisa Guimarães, and Pedro Cláudio Guaranho de Moraes, "Gaussian beam scattering by two parallel nonabsorbing dielectric cylinders: displacement and rotational degrees of freedom," Appl. Opt. 47, 6701-6709 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-36-6701

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