期刊
OPTICS LETTERS
卷 36, 期 12, 页码 2278-2280出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.36.002278
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- Deutsche Forschungsgemeinschaft (DFG) [FOR 557]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
We theoretically calculate the electromagnetic response of metallic rod dimers for the 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. Because of a very simple geometry of the rod dimer, such planar metamaterials are much easier to fabricate than conventional split-ring or gammadion-type structures and lend themselves to a simple analytical treatment based on a coupled dipole model. Dependencies of the metamaterial's directional asymmetry on the dimer's geometry are established analytically and confirmed in numerical simulations. (c) 2011 Optical Society of America
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