title: Coupling effects in low-symmetry planar split-ring resonator arrays.
abstract: We introduce a particular low-symmetry (point group of unit cell C(1)) planar periodic arrangement of magnetic split-ring resonators that acts as an effective optical wave plate. We show that this behavior specifically results from the in-plane interactions among the individual split-ring resonators. Measured normal-incidence transmittance and conversion spectra of gold-based samples fabricated via electron-beam lithography show fundamental resonances at around 235 THz frequency (1,275 nm wavelength) that are in good agreement with theory.
authors.affiliation: Institut für Angewandte Physik and DFG-Center for Functional Nanostructures (CFN), Universität Karlsruhe (TH), Wolfgang-Gaede-Strasse 1, 76131 Karlsruhe, Germany. manuel.decker@physik.uni-karlsruhe.de
authors.forename: Manuel
authors.initials: M
authors.lastname: Decker
authors.forename: Stefan
authors.initials: S
authors.lastname: Linden
authors.forename: Martin
authors.initials: M
authors.lastname: Wegener