A novel RC-FDTD algorithm for the Drude dispersion analysis

verfasst von

A. Cala' Lesina, A. Vaccari, A. Bozzoli

Abstract

One of the main techniques for the Finite-Difference Time-Domain (FDTD) analysis of dispersive media is the Recursive Convolution (RC) method. The idea here proposed for calculating the updating FDTD equation is based on the Laplace transform and is applied to the Drude dispersion case. A novel RC-FDTD algorithm, that we call modified, is then deduced. We test our algorithm by simulating gold and silver nanospheres exposed to an optical plane wave and by comparing the results with the analytical solution. The modified algorithm guarantees a better overall accuracy of the solution, in particular at the plasmonic resonance frequencies.

Externe Organisation(en)

Fondazione Bruno Kessler

Typ

Artikel

Journal

Progress In Electromagnetics Research M

Band

24

Seiten

251-264

Anzahl der Seiten

14

ISSN

1937-8726

Publikationsdatum

2012

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektronische, optische und magnetische Materialien, Physik der kondensierten Materie

Elektronische Version(en)

https://doi.org/10.2528/PIERM12041904 (Zugang: Offen)