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

Opt Express. 2008 May 12;16(10):7397-406. doi: 10.1364/oe.16.007397.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms
  • Computer Simulation
  • Electromagnetic Fields
  • Metal Nanoparticles / chemistry*
  • Models, Statistical
  • Models, Theoretical
  • Nanoparticles
  • Nanostructures
  • Optics and Photonics*
  • Reproducibility of Results
  • Surface Properties
  • Time Factors