Diserete-dipole approximation for periodic targets: Theory and tests

Bruce T. Draine, Piotr J. Flatau

Research output: Contribution to journalArticle

291 Scopus citations

Abstract

The diserete-dipole approximation (DDA) is a powerful method for calculating absorption and scattering by targets that have sizes smaller than or comparable to the wavelength of the incident radiation. The DDA can be extended to targets that are singly or doubly periodic. We generalize the scattering amplitude matrix and the 4×4 Mueller matrix to describe scattering by singly and doubly periodic targets and show how these matrices can be calculated using the DDA. The accuracy of DDA calculations using the open-source code DDSCAT is demonstrated by comparison with exact results for infinite cylinders and infinite slabs. A method for using the DDA solution to obtain fields within and near the target is presented, with results shown for infinite slabs.

Original languageEnglish (US)
Pages (from-to)2693-2703
Number of pages11
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume25
Issue number11
DOIs
StatePublished - Nov 1 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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