Contour-path effective permittivities for the two-dimensional finite-difference time-domain method
Anno: 2005
Autori: Mohammadi A., Nadgaran H., Agio M.
Affiliazione autori: Nano-Optics Group, Laboratory of Physical Chemistry, ETH Zurich, CH-8093 Zurich, Switzerland; Department of Physics, Shiraz University, 71454 Shiraz, Iran.
Abstract: Effective permittivities for the two-dimensional Finite-Difference Time-Domain (FDTD) method are derived using a contour path approach that accounts for the boundary conditions of the electromagnetic field at dielectric interfaces. A phenomenological formula for the effective permittivities is also proposed as an effective and simpler alternative to the previous result. Our schemes are validated using Mie theory for the scattering of a dielectric cylinder and they are compared to the usual staircase and the widely used volume-average approximations. Significant improvements in terms of accuracy and error fluctuations are demonstrated, especially in the calculation of resonances.
Giornale/Rivista: OPTICS EXPRESS
Volume: 13 (25) Da Pagina: 10367 A: 10381
Parole chiavi: Dielectric Particles; Maxwells Equations; Fdtd Method; Complex Geometries; Light-scattering; Curved Surfaces; Algorithm; Interfaces; Media; FormulationDOI: 10.1364/OPEX.13.010367Citazioni: 53dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
