Negative Refraction and Left-handed electromagnetism in Microwave Photonic Crystals

Details Negative Refraction and Left-handed electromagnetism in Microwave Photonic Crystals Negative Refraction and Left-handed electromagnetism in Microwave Photonic Crystals

2003-06-04

arxiv.org/abs/cond-mat/0306109v2

Phys. Rev. Lett. 92, 127401-1 (2004)

Physics

Condensed Matter

Materials Science

13 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.92.127401

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.

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