Near dispersion-less surface plasmon polariton resonances at a metal-dielectric interface

Details Near dispersion-less surface plasmon polariton resonances at a metal-dielectric interface Near dispersion-less surface plasmon polariton resonances at a metal-dielectric interface

2011-12-22

arxiv.org/abs/1112.5256v1

Physics

Condensed Matter

Materials Science

5 pages, 5 figures

Scientific paper

Omni-directional light coupling to surface plasmon polariton (SPP) modes to make use of plasmon mediated near-field enhancement is challenging. We report possibility of near dispersion-less modes in structures with unpatterned metal-dielectric interfaces having 2-D dielectric patterns on top. We show that the position and dispersion of the excited modes can be controlled by the excitation geometry and the 2-D pattern. The anti-crossings resulting from the in-plane coupling of different SPP modes are also shown.

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