Fast algorithm for the analysis of scattering by dielectric rough surfaces

Vikram Jandhyala, Balasubramaniam Shanker, Eric Michielssen, Weng C. Chew

Research output: Contribution to journalArticlepeer-review

Abstract

A novel multilevel algorithm to analyze scattering from dielectric random rough surfaces is presented. This technique, termed the steepest-descent fast-multipole method, exploits the quasi-planar nature of dielectric rough surfaces to expedite the iterative solution of the pertinent integral equation. A combination of the fastmultipole method and Sommerfeld steepest-descent-path integral representations is used to efficiently compute electric and magnetic fields that are due to source distributions residing on the rough surface. The CPU time and memory requirements of the technique scale linearly with problem size, thereby permitting the rapid analysis of scattering by large dielectric surfaces and permitting Monte Carlo simulations with realistic computing resources. Numerical results are presented to demonstrate the efficacy of the steepest-decent fastmultipole method.

Original languageEnglish (US)
Pages (from-to)1877-1885
Number of pages9
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume15
Issue number7
DOIs
StatePublished - Jul 1998

ASJC Scopus subject areas

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

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