Single-layer terahertz metamaterials with bulk optical constants
Journal Article

Published: Tuesday, January 17, 2012
Citation: Physical Review B, Volume 85, Number 3, Pages 035112
AIP Permalink: http://link.aps.org/doi/10.1103/PhysRevB.85.035112

Authors (1 total): A. C. Strikwerda

Abstract:

At the moment, I am unable to add authors. The full author list is: W.-C. Chen1A. Totachawattana1K. Fan2J. L. Ponsetto1A. C. Strikwerda3X. Zhang2R. D. Averitt3, and W. J. Padilla1 

We investigate the conditions under which single layer metamaterials may be described by bulk optical constants. Terahertz time domain spectroscopy is utilized to investigate two types of geometries, both with two different sizes of embedding dielectric—cubic and tetragonal unit cells. The tetragonal metamaterials are shown to yield layer dependent optical constants, whereas the cubic metamaterials yielded layer independent optical constants. We establish guidelines for when ε and μ can be used as material parameters for single layer metamaterials. Experimental results at terahertz frequencies are presented and supported by full wave three-dimensional electromagnetic simulations.