Plasmon excitation using a dielectric slab with diffusion type photorefractive nonlinearity

J. Sánchez-Mondragón; Daniel E. Ceballos-Herrera; A. Alejo-Molina; D. May-Arrioja; O. S. Magaña-Loaiza; N. Lozano-Crisostomo

doi:10.1117/12.903383

25 October 2011 Plasmon excitation using a dielectric slab with diffusion type photorefractive nonlinearity

J. Sánchez-Mondragón, Daniel E. Ceballos-Herrera, A. Alejo-Molina, D. May-Arrioja, O. S. Magaña-Loaiza, N. Lozano-Crisostomo

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Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 80115L (2011) https://doi.org/10.1117/12.903383
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

We investigated numerically the TM electric field solutions of a dielectric slab formed by a photorefractive crystal with diffusion-type nonlinearity and limited by two metallic films. This study allows us the analysis of nonlinear surface optical waves as nonlinear solutions of the photorefractive crystal slab. Additionally, we analyzed the influence of these nonlinear solutions to excite surface plasmon-polariton waves at the metallic interfaces. In this case, the coupling between plasmons and nonlinear solutions it is possible because only TM electromagnetic waves are supported by a metal-dielectric planar waveguide. Here, we solved the vectorial and nonlinear wave equation using an iterative method based in self-autoconsistency. With this algorithm, the coupling between the waveguide modes and the surface plasmon-polariton waves are systematically investigated. The results obtained in this work are reproducible and contributes with new information for the design of tunable plasmonic devices based in nonlinear photorefractive crystals.

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J. Sánchez-Mondragón, Daniel E. Ceballos-Herrera, A. Alejo-Molina, D. May-Arrioja, O. S. Magaña-Loaiza, and N. Lozano-Crisostomo "Plasmon excitation using a dielectric slab with diffusion type photorefractive nonlinearity", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80115L (25 October 2011); https://doi.org/10.1117/12.903383

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KEYWORDS

Surface plasmons

Crystals

Nonlinear crystals

Dielectrics

Interfaces

Plasmons

Diffusion

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