Complete bandgaps in one-dimensional left-handed periodic structures

Details Complete bandgaps in one-dimensional left-handed periodic structures Complete bandgaps in one-dimensional left-handed periodic structures

2005-03-18

arxiv.org/abs/physics/0503154v2

Phys. Rev. Lett. 95, 193903-4 (2005)

Physics

Optics

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.95.193903

Artificially fabricated structures with periodically modulated parameters such as photonic crystals offer novel ways of controlling the flow of light due to the existence of a range of forbidden frequencies associated with a photonic bandgap. It is believed that modulation of the refractive index in all three spatial dimensions is required to open a complete bandgap and prevent the propagation of electromagnetic waves in all directions. Here we reveal that, in a sharp contrast to what was known before and contrary to the accepted physical intuition, a one-dimensional periodic structure containing the layers of transparent left-handed (or negative-index) metamaterial can trap light in three-dimensional space due to the existence of a complete bandgap.

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