Extraordinary optical reflection from sub-wavelength cylinder arrays

A multiple scattering analysis of the reflectance of a periodic array of sub-wavelength cylinders is presented. The optical properties and their dependence on wavelength, geometrical parameters and cylinder dielectric constant are analytically derived for both s- and p-polarized waves. In absence of...

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Bibliographic Details
Published inOptics express Vol. 14; no. 9; pp. 3730 - 3737
Main Authors Gómez-Medina, Raquel, Laroche, Marine, Sáenz, Juan J
Format Journal Article
LanguageEnglish
Published United States Optical Society of America - OSA Publishing 01.05.2006
Subjects
Optics
Physics
Multiple scattering
Diffraction theory
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Summary:A multiple scattering analysis of the reflectance of a periodic array of sub-wavelength cylinders is presented. The optical properties and their dependence on wavelength, geometrical parameters and cylinder dielectric constant are analytically derived for both s- and p-polarized waves. In absence of Mie resonances and surface (plasmon) modes, and for positive cylinder polarizabilities, the reflectance presents sharp peaks close to the onset of new diffraction modes (Rayleigh frequencies). At the lowest resonance frequency, and in the absence of absorption, the wave is perfectly reflected even for vanishingly small cylinder radii.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.14.003730