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

被引：86

作者：

Schmehl, R ^{[1
]}

Nebeker, BM ^{[1
]}

Hirleman, ED ^{[1
]}

机构：

[1] ARIZONA STATE UNIV,DEPT AEROSP & MECH ENGN,TEMPE,AZ 85287

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1997年 / 14卷 / 11期

关键词：

light scattering; discrete-dipole approximation; coupled-dipole method; particles on surfaces; fast Fourier transform; differential scattering cross section; irradiance;

D O I：

10.1364/JOSAA.14.003026

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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(N-2) 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. (C) 1997 Optical Society of America.

引用

页码：3026 / 3036

页数：11

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