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

  • Author: D. Diessel, M. Decker, S. Linden, and M. Wegener
  • Source:

    Opt. Lett. 35, 3661 (2010)

  • Date: 27.10.2010
  • 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.