Circular dichroism of planar chiral magnetic metamaterials

  • Author: M. Decker, M. W. Klein, M. Wegener, and S. Linden
  • Source: Opt. Lett. 32, 856 (2007)
  • Date: 5.3.2007
  • Abstract:

    We propose, fabricate, and study a double-layer chiral planar metamaterial that exhibits pronounced circular dichroism at near-infrared wavelengths. The antisymmetric oscillation modes of the two coupled layers allow local magnetic-dipole moments and enhanced polarization effects compared with similar single-layer systems where only electric-dipole moments occur. Experiment and rigorous theoretical calculations are in good agreement.