Spherical harmonics expansion of the evanescent waves in angular spectrum decomposition of shaped beams

被引：13

作者：

Wang, Chunwei ^{[1
]}

Shen, Jianqi ^{[1
]}

Ren, Kuan-Fang ^{[2
,3
]}

机构：

[1] Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China

[2] Normandie Univ, CNRS, CORIA, UMR 6614, F-76801 St Etienne Du Rouvray, France

[3] INSA Rouen, F-76801 St Etienne Du Rouvray, France

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2020年 / 251卷

关键词：

Evanescent wave; Angular spectrum decomposition; Beam shape coefficient; Shaped beam; MICROMETER-SIZED SPHERE; DIELECTRIC SPHERE; GAUSSIAN-BEAM; FOCUSED BEAM; RADIATION FORCES; LIGHT-SCATTERING; MIE SCATTERING; OPTICAL FORCE; FIELD;

D O I：

10.1016/j.jqsrt.2020.107012

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The angular spectrum decomposition (ASD) is a powerful tool for analyzing the interaction between spherical particles and shaped beams, in which homogeneous plane waves and/or evanescent waves are expanded into series of vector spherical harmonics (VSH). The paper presents a numerical study on the VSH expansion of the evanescent wave and its behavior in the field reconstruction of the shaped beam. It is revealed that the beam shape coefficients (BSCs) of the evanescent waves increase exponentially along the increasing partial wave number, consequently extending the convergence of the series and restricting the field reconstruction into a limited space. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：9