用于规则直线网格的离散偶极子近似中的快速近场计算。

Fast near field calculations in the discrete dipole approximation for regular rectilinear grids.

作者信息

Flatau P J, Draine B T

机构信息

University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA 92093, USA.

出版信息

Opt Express. 2012 Jan 16;20(2):1247-52. doi: 10.1364/OE.20.001247.

DOI:10.1364/OE.20.001247

PMID:22274469

Abstract

A near-field calculation of light electric field intensity inside and in the vicinity of a scattering particle is discussed in the discrete dipole approximation. A fast algorithm is presented for gridded data. This algorithm is based on one matrix times vector multiplication performed with the three dimensional fast Fourier transform. It is shown that for moderate and large light scattering near field calculations the computer time required is reduced in comparison to some of the other methods.

摘要

在离散偶极近似中讨论了散射粒子内部及其附近光电场强度的近场计算。针对网格化数据提出了一种快速算法。该算法基于用三维快速傅里叶变换进行的一次矩阵与向量乘法。结果表明，对于中等和大尺寸光散射近场计算，与其他一些方法相比，所需的计算机时间减少了。