Achieving anisotropy in metamaterials made of dielectric cylindrical rods

Liang Peng, Lixin Ran, Asger Mortensen

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Abstract

We show that anisotropic negative effective dispersion relation can be achieved in pure dielectric rod-type metamaterials by turning from the symmetry of a square lattice to that of a rectangular one. Theoretical predictions and conclusions are verified by both numerical calculations and computer based simulations. The proposed anisotropic metamaterial, is used to construct a refocusing slab lens and a subdiffraction hyperlens. The all-dielectric origin makes it more straightforward to address loss and scaling, thus facilitating future applications in both the terahertz and optical range.
Original languageEnglish
JournalApplied Physics Letters
Volume96
Issue number24
Pages (from-to)241108
ISSN0003-6951
DOIs
Publication statusPublished - 2010

Bibliographical note

Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • numerical analysis
  • metamaterials
  • optical constants
  • dispersion relations
  • dielectric materials
  • slabs

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