Conjugated gammadion chiral metamaterial with uniaxial optical activity and negative refractive index

R. Zhao, L. Zhang, J. Zhou, Th. Koschny, and C. M. Soukoulis

Phys. Rev. B 83, 035105 – Published 10 January 2011

Abstract

We demonstrate numerically and experimentally a conjugated gammadion chiral metamaterial that uniaxially exhibits huge optical activity and circular dichroism, and gives a negative refractive index. This chiral design provides smaller unit cell size and larger chirality compared with other published planar designs. Experiments are performed at GHz frequencies (around 6 GHz) and are in good agreement with the numerical simulations.

Received 28 June 2010

DOI:https://doi.org/10.1103/PhysRevB.83.035105

Authors & Affiliations

R. Zhao^1,2, L. Zhang¹, J. Zhou³, Th. Koschny^1,4, and C. M. Soukoulis^1,4

¹Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
²Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing 100875, China
³Centre for Integrated Nanotechnologies, Materials Physics & Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
⁴Institute of Electronic Structure and Laser, Foundation for Research and Technology—Hellas (FORTH), Department of Materials Science and Technology, University of Crete, Heraklion, 71110 Crete, Greece

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Vol. 83, Iss. 3 — 1 January 2011

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