Resolution of sub-wavelength lenses formed by the wire medium

Abstract

The restrictions on the resolution of transmission devices formed by wire media (arrays of conductive cylinders) recently proposed in [Phys. Rev. B, 71, 193105 (2005)] and experimentally tested in [Phys. Rev. B, 73, 033108 (2006)] are studied in this paper using both analytical and numerical modeling. It is demonstrated that such transmission devices have sub-wavelength resolution that can in principle be made as fine as required by a specific application by controlling the lattice constant of the wire medium. This confirms that slabs of the wire medium are unique imaging devices at the microwave frequency range, and are capable of transmitting distributions of TM-polarized electric fields with nearly unlimited sub-wavelength resolution to practically arbitrary distances.

10 pages, 12 figures, submitted to PRE

References in corpus (3)

• Strong spatial dispersion in wire media in the very large wavelength limit
• Propagation of optical excitations by dipolar interactions in metal nanoparticle chains
• Sub-wavelength imaging by wire media

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