Optical activity in extrinsically chiral metamaterial
Abstract
We demonstrate optical activity in an intrinsically non-chiral anisotropic planar metamaterial. The phenomenon is due to extrinsic chirality resulting from the mutual orientation of the metamaterial structure and the incident electromagnetic wave. The polarization effect, which has a resonant nature, features a spectral band where linear birefringence is practically absent and can be easily tuned by tilting the plane of the metamaterial relative to the incident beam.
- Publication:
-
Applied Physics Letters
- Pub Date:
- November 2008
- DOI:
- 10.1063/1.3021082
- arXiv:
- arXiv:0807.0523
- Bibcode:
- 2008ApPhL..93s1911P
- Keywords:
-
- 78.20.Ek;
- 78.20.Fm;
- Optical activity;
- Birefringence;
- Physics - Optics
- E-Print:
- 5 pages, 5 figures