Beam propagation in finite size photonic crystals and metamaterials

Details Beam propagation in finite size photonic crystals and metamaterials Beam propagation in finite size photonic crystals and metamaterials

2008-01-21

arxiv.org/abs/0801.3161v1

Physics

Condensed Matter

Materials Science

submitted to Phys. Rev. E

Scientific paper

The recent interest in the imaging possibilities of photonic crystals (superlensing, superprism, optical mirages etc...) call for a detailed analysis of beam propagation inside a finite periodic structure. In this paper, an answer to the question "where does the beam emerge?" is given. Contrarily to common knowledge, it is not always true that the shift of a beam is given by the normal to the dispersion curve. This phenomenon is explained in terms of evanescent waves and a renormalized diagram that gives the correct direction is given.

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