Send to

Choose Destination
Nano Lett. 2014 Feb 12;14(2):1021-5. doi: 10.1021/nl404572u. Epub 2014 Jan 15.

Giant chiral optical response from a twisted-arc metamaterial.

Author information

School of Materials Science and Engineering, Georgia Institute of Technology , 771 Ferst Drive, Atlanta, Georgia 30332, United States.


We demonstrate enormously strong chiral effects from a photonic metamaterial consisting of an array of dual-layer twisted-arcs with a total thickness of ∼ λ/6. Experimental results reveal a circular dichroism of ∼ 0.35 in the absolute value and a maximum polarization rotation of ∼ 305°/λ in a near-infrared wavelength region. A transmission of greater than 50% is achieved at the frequency where the polarization rotation peaks. Retrieved parameters from measured quantities further indicate an actual optical activity of 76° per λ and a difference of 0.42 in the indices of refraction for the two circularly polarized waves of opposite handedness.


Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center