Dispersive contour-path algorithm for the two-dimensional finite-difference time-domain method

Year: 2008

Authors: Mohammadi A., Jalali T., Agio M.

Autors Affiliation: ETH, Chem Phys Lab, Nanoopt Grp, CH-8093 Zurich, Switzerland; Persian Gulf Univ, Dept Phys, Bushehr 75196, Iran.

Abstract: We have extended the contour-path effective-permittivity (CP-EP) finite-difference time-domain (FDTD) algorithm by A. Mohammadi et al., Opt. Express 13, 10367 (2005), to linear dispersive materials using the Z-transform formalism. We test our method against staircasing and the exact solution for plasmon spectra of metal nanoparticles. We show that the dispersive contour-path (DCP) approach yields better results than staircasing, especially for the cancellation of spurious resonances.

Journal/Review: OPTICS EXPRESS

Volume: 16 (10)      Pages from: 7397  to: 7406

KeyWords: Dielectric Surfaces; Index Metamaterials; Complex Geometries; Optical-properties; Fdtd Method; Interfaces; Nanostructures; Formulation; Dimensions; Plasmonics
DOI: 10.1364/OE.16.007397

Citations: 38
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