Evanescent spherical waves of scalar point source

被引：2
|
作者：
Suhadolnik, A. [1 ]
机构：
[1] Univ Ljubljana, Fac Mech Engn, Askerceva 6, Ljubljana 1000, Slovenia
来源：
OPTIK | 2017年 / 130卷
关键词：
Spherical wave; Evanescent wave; Homogeneous wave; Weyl's expansion; PLANE-WAVES; FAR-FIELD; RESOLUTION;
D O I：
10.1016/j.ijleo.2016.10.065
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
It is well known that evanescent waves decay exponentially from a wave source and influence on a near field of the particular source. In a zero frequency limit these waves decay according to a power law around a spherical source. In the paper exact calculations of an evanescent and homogeneous field in the zero frequency limit has been performed. The calculations base on an angular spectrum representation of a spherical wave using Weyl's expansion technique. (C) 2016 Elsevier GmbH. All rights reserved.
引用
收藏
页码：306 / 309
页数：4
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