Open AccessScattering of Gaussian beam by arbitrarily shaped particles with multiple internal inclusions
Author(s) -
Yiping Han,
Zhiwei Cui,
Wenjuan Zhao
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.000718
Subject(s) - gaussian beam , scattering , optics , discretization , gaussian , beam (structure) , physics , numerical analysis , integral equation , conjugate gradient method , mathematical analysis , mathematics , mathematical optimization , quantum mechanics
In this paper, we introduce an efficient numerical method based on surface integral equations to characterize the scattering of an arbitrarily incident Gaussian beam by arbitrarily shaped particles with multiple internal inclusions. The incident Gaussian beam is described by the Davis-Barton fifth-order approximation in combination with rotation Euler angles. For numerical purposes, the surfaces of the host particle and the inclusions are modeled using small triangular patches and the established surface integral equations are discretized with the method of moments. The resultant matrix equation is solved by using a parallel implementation of conjugate gradient method on distributed-memory architectures. Some numerical results are included to illustrate the validity and capability of the developed method. These results are also expected to provide useful insights into the scattering of Gaussian beam by composite particles.