Analysis of the radiation force of a Laguerre Gaussian vortex beam exerted on an uniaxial anisotropic sphere

被引:25
作者
Qu, Tan [1 ]
Wu, Zhen-Sen [1 ]
Shang, Qing-Chao [1 ]
Li, Zheng-Jun [1 ]
Bai, Lu [1 ]
Gong, Lei [2 ]
机构
[1] Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Shaanxi, Peoples R China
[2] Xian Technol Univ, Sch Photoelect Engn, Xian 710021, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Laguerre Gaussian beam; Radiation force; Anisotropic particle; Spherical vector wave function; ELECTROMAGNETIC SCATTERING; OPTICAL LEVITATION; DIELECTRIC SPHERE; LIGHT-SCATTERING; MIE SCATTERING; LASER-BEAMS; PARTICLES; MANIPULATION; TWEEZERS; HERMITE;
D O I
10.1016/j.jqsrt.2015.03.033
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Based on the expansion of Hermite Gaussian (HG) beam in terms of spherical vector wave functions (SVWFs) utilizing Complex Source Point Method (CSPM) and the relation between HG beam and Laguerre Gaussian (LG) mode, we derived the expansion of LG vortex beam in terms of SVWFs. Using Generalized Lorenz Mie Theory (GLMT), the radiation force (RF) exerted on a uniaxial anisotropic sphere by a LG vortex beam with spiral phase distribution is calculated. The effects of the radial and azimuthal mode index of LG vortex beam, anisotropic permittivity tensor elements, and particle size on the dimensionless axial and transverse RF have been numerically analyzed in detail. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:103 / 113
页数:11
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