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Opt Lett. 2010 Nov 1;35(21):3661-3. doi: 10.1364/OL.35.003661.

Near-field optical experiments on low-symmetry split-ring-resonator arrays.

Author information

1
Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany. daniela.diessel@kit.edu

Abstract

Effective symmetric and antisymmetric eigenmodes of coupled plasmonic resonances play a crucial role in many photonic metamaterials. Recently, we discussed a particular arrangement of metallic split-ring resonators that is planar, hence enabling direct experimental access to the different eigenmodes via near-field optical microscopy. In this Letter, corresponding optical experiments are presented and compared with simple theoretical modeling, providing a direct confirmation of our previous, more indirect conclusions.

PMID:
21042383

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