Optical activity in extrinsically chiral metamaterial

Plum, E.; Fedotov, V. A.; Zheludev, N. I.
November 2008
Applied Physics Letters;11/10/2008, Vol. 93 Issue 19, p191911
Academic Journal
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.


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