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Coupling effects in low-symmetry planar split-ring resonator arrays

Coupling effects in low-symmetry planar split-ring resonator arrays
Author: M. Decker, S. Linden, and M. Wegener links:
Source: Opt. Lett. 34, 1579 (2009)
Date: 13.5.2009

Abstract:

We introduce a particular low-symmetry (point group of unit cell C1) 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 (1275 nm wavelength) that are in good agreement with theory.