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

Sachin Kasture; P. Mandal; Amandev Singh; Andrew Ramsay; Arvind S. Vengurlekar; S. Dutta Gupta; V. I. Belotelov; Achanta Venu Gopal

doi:10.1063/1.4749277

arXiv · 1112.5256

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

Sachin Kasture·P. Mandal·Amandev Singh·Andrew Ramsay·Arvind S. Vengurlekar·S. Dutta Gupta·V. I. Belotelov·Achanta Venu Gopal

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Abstract

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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Sachin Kasture, P. Mandal, Amandev Singh, Andrew Ramsay, Arvind S. Vengurlekar, S. Dutta Gupta, V. I. Belotelov, Achanta Venu Gopal. 2012-08-01. Near dispersion-less surface plasmon polariton resonances at a metal-dielectric interface. https://doi.org/10.1063/1.4749277

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