Giant chiral optical response from a twisted-arc metamaterial. Academic Article uri icon


  • We demonstrate enormously strong chiral effects from a photonic metamaterial consisting of an array of dual-layer twisted-arcs with a total thickness of /6. Experimental results reveal a circular dichroism of 0.35 in the absolute value and a maximum polarization rotation of 305/ 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 and a difference of 0.42 in the indices of refraction for the two circularly polarized waves of opposite handedness.

published proceedings

  • Nano Lett

author list (cited authors)

  • Cui, Y., Kang, L., Lan, S., Rodrigues, S., & Cai, W.

citation count

  • 217

complete list of authors

  • Cui, Yonghao||Kang, Lei||Lan, Shoufeng||Rodrigues, Sean||Cai, Wenshan

publication date

  • February 2014