Discrete-dipole approximation for scattering by features on surfaces by means of a twodimensional fast Fourier transform technique

Roland Schmehl, Brent M. Nebeker, E. Dan Hirleman

Research output: Contribution to journalArticleScientificpeer-review

83 Citations (Scopus)

Abstract

A two-dimensional fast Fourier transform technique is proposed for accelerating the computation of scattering characteristics of features on surfaces by using the discrete-dipole approximation. The two-dimensional fast Fourier transform reduces the CPU execution time dependence on the number of dipoles N from O(N2) to O(N log N). The capabilities and flexibility of a discrete-dipole code implementing the technique are demonstrated with scattering results from circuit features on surfaces.
Original languageEnglish
Pages (from-to)3026-3036
Number of pages11
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume14
Issue number11
DOIs
Publication statusPublished - 1 Jan 1997
Externally publishedYes

Keywords

  • Coupled-dipole method
  • Differential scattering cross section
  • Discrete-dipole approximation
  • Fast Fourier transform
  • Irradiance
  • Light scattering
  • Particles on surfaces

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