Near-field scattering by dielectric spheroidal particles with sizes on the order of the illuminating wavelength

Mendes, Manuel J. and Tobías Galicia, Ignacio and Martí Vega, Antonio and Luque López, Antonio (2010). Near-field scattering by dielectric spheroidal particles with sizes on the order of the illuminating wavelength. "Journal of the Optical Society of America B: Optical Physics", v. 27 (n. 6); pp. 1221-1231. ISSN 0740-3224. https://doi.org/10.1364/JOSAB.27.001221.

Description

Title: Near-field scattering by dielectric spheroidal particles with sizes on the order of the illuminating wavelength
Author/s:
  • Mendes, Manuel J.
  • Tobías Galicia, Ignacio
  • Martí Vega, Antonio
  • Luque López, Antonio
Item Type: Article
Título de Revista/Publicación: Journal of the Optical Society of America B: Optical Physics
Date: June 2010
ISSN: 0740-3224
Volume: 27
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We present a theoretical study of electric field scattering by wavelength-sized spheroids. The incident, internal, and scattered fields are computed analytically by a spheroidal coordinate separation-of-variables solution, assuming axially incident monochromatic illumination. The main sources of possible numerical errors are identified and an additional point-matching procedure is implemented to provide a built-in test of the validity of the results. Numerical results were obtained for prolate and oblate particles with particular aspect ratios and sizes, and a refractive index of 1.33 relative to the surrounding medium. Special attention is paid to the characteristics of the near-field in close proximity to the spheroids. It is shown that particles with sizes close to the incident wavelength can produce high field enhancements whose spatial location and extension can be controlled by the particle geometry.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7211640IBPOWERUnspecifiedIntermediate Band Materials and Solar Cells for Photovoltaics with High Efficiency and Reduced Cost

More information

Item ID: 8341
DC Identifier: http://oa.upm.es/8341/
OAI Identifier: oai:oa.upm.es:8341
DOI: 10.1364/JOSAB.27.001221
Official URL: http://www.opticsinfobase.org/abstract.cfm?uri=josab-27-6-1221
Deposited by: Memoria Investigacion
Deposited on: 26 Jul 2011 09:41
Last Modified: 07 Nov 2014 11:10
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