Light concentration in the near-field of dielectric spheroidal particles with mesoscopic sizes

Mendes, Manuel J. and Tobías Galicia, Ignacio and Martí Vega, Antonio and Luque López, Antonio (2011). Light concentration in the near-field of dielectric spheroidal particles with mesoscopic sizes. "Optics Express", v. 19 (n. 7); pp. 16207-16222. ISSN 1094-4087. https://doi.org/10.1364/OE.19.016207.

Description

Title: Light concentration in the near-field of dielectric spheroidal particles with mesoscopic sizes
Author/s:
  • Mendes, Manuel J.
  • Tobías Galicia, Ignacio
  • Martí Vega, Antonio
  • Luque López, Antonio
Item Type: Article
Título de Revista/Publicación: Optics Express
Date: August 2011
Volume: 19
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

This paper presents a numerical study of the light focusing properties of dielectric spheroids with sizes comparable to the illuminating wavelength. An analytical separation-of-variables method is used to determine the electric field distribution inside and in the near-field outside the particles. An optimization algorithm was implemented in the method to determine the particles’ physical parameters that maximize the forward scattered light in the near-field region. It is found that such scatterers can exhibit pronounced electric intensity enhancement (above 100 times the incident intensity) in their close vicinity, or along wide focal regions extending to 10 times the wavelength. The results reveal the potential of wavelength-sized spheroids to manipulate light beyond the limitations of macroscopic geometrical optics. This can be of interest for several applications, such as light management in photovoltaics

Funding Projects

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

More information

Item ID: 10414
DC Identifier: http://oa.upm.es/10414/
OAI Identifier: oai:oa.upm.es:10414
DOI: 10.1364/OE.19.016207
Deposited by: Memoria Investigacion
Deposited on: 29 Feb 2012 08:57
Last Modified: 31 Oct 2014 12:15
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