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Comparison of gold and silver dispersion laws suitable for FDTD simulations

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Abstract

We show that it is possible to increase the accuracy of gold and silver permittivity description by using the Drude–critical points model rather than the widely used Drude–Lorentz model. We also show the effect of this improvement on the extinction efficiency and near-field intensity precision.

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Authors and Affiliations

  1. Laboratoire de Nanotechnologie et d’Instrumentation Optique, Institut Charles Delaunay, Université de Technologie de Troyes—CNRS FRE 2848, 12, rue Marie Curie, BP-2060, 10010, Troyes Cedex, France

    A. Vial

  2. Département de Physique et de Métrologie des Oscillateurs, Institut FEMTO-ST—CNRS UMR 6174, Université de Franche-Comté, 32, avenue de l’Observatoire, 25044, Besançon Cedex, France

    T. Laroche

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  1. A. Vial
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  2. T. Laroche
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Correspondence to A. Vial.

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Vial, A., Laroche, T. Comparison of gold and silver dispersion laws suitable for FDTD simulations. Appl. Phys. B 93, 139–143 (2008). https://doi.org/10.1007/s00340-008-3202-4

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  • DOI: https://doi.org/10.1007/s00340-008-3202-4

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