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Basis for paraxial surface-plasmon-polariton packets

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Martínez Herrero, Rosario and Manjavacas, Alejandro (2016) Basis for paraxial surface-plasmon-polariton packets. Physical review A, 94 (6). ISSN 2469-9926

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Official URL: http://dx.doi.org/10.1103/PhysRevA.94.063829


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Abstract

We present a theoretical framework for the study of surface-plasmon polariton (SPP) packets propagating along a lossy metal-dielectric interface within the paraxial approximation. Using a rigorous formulation based on the plane-wave spectrum formalism, we introduce a set of modes that constitute a complete basis set for the solutions of Maxwell's equations for a metal-dielectric interface in the paraxial approximation. The use of this set of modes allows us to fully analyze the evolution of the transversal structure of SPP packets beyond the single plane-wave approximation. As a paradigmatic example, we analyze the case of a Gaussian SPP mode, for which, exploiting the analogy with paraxial optical beams, we introduce a set of parameters that characterize its propagation.


Item Type:Article
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©Amer Physical Soc.
This work has been sponsored by the Ministerio de Ciencia e Innovación (Spain) Projects No. FIS2013-46475 and No. FIS2016-75147 and the Department of Physics and Astronomy and the College of Arts and Sciences of the University of New Mexico. The authors also acknowledge the UNM Center for Advanced Research Computing for the computational resources used in this work.

Uncontrolled Keywords:Lossy interface; Beams; Wave
Subjects:Sciences > Physics > Optics
ID Code:46068
Deposited On:31 Jan 2018 19:35
Last Modified:09 Jul 2018 14:51

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