The far field scattering of single walled carbon nanotubes illuminated by a Gaussian beam

被引：4
|
作者：
Yang, Hui [1 ,3 ]
Kong, Ping [2 ]
Yang, Hai-ma [1 ]
Xing, Shi-tong [1 ]
Zheng, Gang [1 ,3 ]
机构：
[1] Shanghai Univ Sci & Technol, Sch Opt Elect & Comp Engn, Shanghai 200093, Peoples R China
[2] Shanghai Med Instrumentat Coll, Fdn Dept, Shanghai 200093, Peoples R China
[3] Shanghai Univ Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China
来源：
OPTIK | 2013年 / 124卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Gaussian beam; Carbon nanotubes; Cylinder; Cylindrical coordinates; Aspect ratio;
D O I：
10.1016/j.ijleo.2012.10.010
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The common far field scattering model of rod like particles illuminated by Gaussian is not very suitable to single wall carbon nanotubes (SWCNTs). In this paper, a more favorable model of SWCNTs is derived perturbatively from Maxwell's equation. Firstly, the first-order approximation description of Gaussian beam in the two parallel Cartesian coordinates is introduced. Then, on the basis of Generalized Mie theory, the electromagnetic fields of Gaussian beam with spherical vector wave functions at any right coordinates system is deduced by adopting the relation between the spherical vector wave functions belonging to a rotating Cartesian coordinate system. Thirdly, taking advantage of the cylindrical vector wave functions given by Stratton, the relationship of the spherical vector wave functions expressed in cylindrical vector wave functions is derived as well. Finally the approximate expression of the cylinder to the far zone scattered field is solved, and the electromagnetic field of infinitely long cylinder is expanded by the cylindrical vector. (C) 2012 Elsevier GmbH. All rights reserved.
引用
收藏
页码：3269 / 3272
页数：4
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