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Sub-wavelength imaging at infrared frequencies using an array of metallic nanorods

Mario G. Silveirinha·Pavel A. Belov·Constantin R. Simovski
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Abstract

We demonstrate that an array of metallic nanorods enables sub-wavelength (near-field) imaging at infrared frequencies. Using an homogenization approach, it is theoretically proved that under certain conditions the incoming radiation can be transmitted by the array of nanorods over a significant distance with fairly low attenuation. The propagation mechanism does not involve a resonance of material parameters and thus the resolution is not strongly affected by material losses and has wide bandwidth. The sub-wavelength imaging with $λ/10$ resolution by silver rods at 30 THz is demonstrated numerically using full-wave electromagnetic simulator.

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Mario G. Silveirinha, Pavel A. Belov, Constantin R. Simovski. 2006-09-15. Sub-wavelength imaging at infrared frequencies using an array of metallic nanorods. https://doi.org/10.1103/physrevb.75.035108

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