A Discontinuous Galerkin Time Domain Method for Plasmonics with a Nonlocal Dispersion Model

Creators: Schmitt, Nikolai; Scheid, Claire; Viquerat, Jonathan; Lanteri, Stephane; Moreau, A

Others:: Numerical modeling and high performance computing for evolution problems in complex domains and heterogeneous media (NACHOS) ; Inria Sophia Antipolis - Méditerranée (CRISAM) ; Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (JAD) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA); Laboratoire Jean Alexandre Dieudonné (JAD) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA); Institut Pascal (IP) ; SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Description

— We present recent advances of the development on Discontinuous Galerkin Time Domain (DGTD) solvers for computational nanophotonics, focusing on metallic nanostructures irradiated by laser pulses. By this means, we firstly discuss an analytical nonlocal dispersion model for the electron gas which is necessary in order to account for spatial dispersion for structures of the size of 2 nm to 25 nm. Subsequently, we deal with the numerical modeling of this nonlocal model when coupled to 3D Maxwell's equations in time domain. We conclude by assessing our implementation with analytical solutions and provide selected numerical examples.

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A Discontinuous Galerkin Time Domain Method for Plasmonics with a Nonlocal Dispersion Model

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