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arXiv · 1103.5008

Plasmonic rod dimers as elementary planar chiral meta-atoms

Sergei V. Zhukovsky·Christian Kremers·Dmitry N. Chigrin
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Abstract

Electromagnetic response of metallic rod dimers is theoretically calculated for arbitrary planar arrangement of rods in the dimer. It is shown that dimers without an in-plane symmetry axis exhibit elliptical dichroism and act as "atoms" in planar chiral metamaterials. Due to a very simple geometry of the rod dimer, such planar metamaterials are much easier in fabrication than conventional split-ring or gammadion-type structures, and lend themselves to a simple analytical treatment based on coupled dipole model. Dependencies of metamaterial's directional asymmetry on the dimer's geometry are established analytically and confirmed in numerical simulations.

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Sergei V. Zhukovsky, Christian Kremers, Dmitry N. Chigrin. 2011-03-25. Plasmonic rod dimers as elementary planar chiral meta-atoms. https://doi.org/10.1364/ol.36.002278

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