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
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.