Negative Refraction and Left-handed electromagnetism in Microwave Photonic Crystals
arXiv:cond-mat/0306109 · doi:10.1103/PhysRevLett.92.127401
Abstract
We demonstrate negative refraction of microwaves in metallic photonic crystals. The spectral response of the photonic crystal, which manifests both positive and negative refraction, is in complete agreement with band-structure calculations and numerical simulations. The negative refraction observed corresponds to left-handed electromagnetism and arises due to the dispersion characteristics of waves in a periodic medium. This mechanism for negative refraction is different from that in metamaterials.
13 pages, 4 figures
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