We introduce and compare two approaches for retrieving quantitatively the effective chirality of metamaterials at normal incidence. The retrieval employs either the reflected and transmitted amplitude of a plane wave illuminating a finite three-dimensional (3D) metamaterial or the dispersion relation of the pertinent Bloch modes in an infinite metamaterial. Both approaches are applied to characterize a 3D metamaterial consisting of a stack of metallic gammadions separated by dielectric films. It will be shown that the results coincide if transitional effects between the metamaterial and the environment can be neglected. © 2008 American Institute of Physics.
CITATION STYLE
Menzel, C., Rockstuhl, C., Paul, T., & Lederer, F. (2008). Retrieving effective parameters for quasiplanar chiral metamaterials. Applied Physics Letters, 93(23). https://doi.org/10.1063/1.3046127
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