Format

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

1
School of Materials Science and Engineering, Georgia Institute of Technology , 771 Ferst Drive, Atlanta, Georgia 30332, United States.

Abstract

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.

PMID:
24422639
DOI:
10.1021/nl404572u

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center