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Proceedings Paper

Negative permittivity and permeability in the infrared due to dielectric spheres
Author(s): Mark S. Wheeler; J. Stewart Aitchison; Mohammad Mojahedi
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Paper Abstract

In this paper we consider the effective electric and magnetic properties of a three-dimensional collection of non-magnetic spheres. Polaritonic materials are used, so that the Mie resonances of the spheres are excited in the long-wavelength regime of the surrounding medium. We consider a simple cubic lattice based on LiTaO3 and find that it is possible to engineer a fundamental resonant magnetic response. The effective media parameters derived by this approach are isotropic, and closely match those obtained by band structure calculations. Frequency ranges with either negative permittivity or negative permeability are found. Within these ranges a negative group velocity is observed. Coated spheres with a negative index of refraction are also presented.

Paper Details

Date Published: 1 October 2005
PDF: 10 pages
Proc. SPIE 5971, Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics, 597113 (1 October 2005); doi: 10.1117/12.629988
Show Author Affiliations
Mark S. Wheeler, Univ. of Toronto (Canada)
J. Stewart Aitchison, Univ. of Toronto (Canada)
Mohammad Mojahedi, Univ. of Toronto (Canada)


Published in SPIE Proceedings Vol. 5971:
Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics
Roberto A. Morandotti; Harry E. Ruda; Jianping Yao, Editor(s)

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