Sub-wavelength imaging by wire media

Details Sub-wavelength imaging by wire media Sub-wavelength imaging by wire media

2005-08-29

arxiv.org/abs/cond-mat/0508696v2

Physical Review B, vol. 73, 033108 (1-4), 2006

Physics

Condensed Matter

Materials Science

4 pages, 4 figures, submitted to PRL

Scientific paper

10.1103/PhysRevB.73.033108

Original realization of a lens capable to transmit images with sub-wavelength resolution is proposed. The lens is formed by parallel conducting wires and effectively operates as a telegraph: it captures image at the front interface and the transmit it to the back interface without distortion. This regime of operation is called canalization and is inherent in flat lenses formed by electromagnetic crystals. The theoretical estimations are supported by numerical simulations and experimental verification. Sub-wavelength resolution of $\lambda/15$ and 18% bandwidth of operation are demonstrated at gigahertz frequencies. The proposed lens is capable to transport sub-wavelength images without distortion to nearly unlimited distances since the influence of losses to the lens operation is negligibly small.

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