Far-field divergence of a vectorial plane wave diffracted by a circular aperture from the vectorial structure

被引：3

作者：

Zhou Guo-Quan ^{[1
]}

机构：

[1] Zhejiang A&F Univ, Sch Sci, Linan 311300, Peoples R China

来源：

CHINESE PHYSICS B | 2011年 / 20卷 / 07期

基金：

中国国家自然科学基金;

关键词：

divergence; plane wave; vectorial structure; diffraction; LAGUERRE-GAUSSIAN BEAM; LIGHT-BEAMS; PROPAGATION;

D O I：

10.1088/1674-1056/20/7/074203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on the vectorial structure of an electromagnetic wave, the analytical and concise expressions for the TE and TM terms of a vectorial plane wave diffracted by a circular aperture are derived in the far-field. The expressions of the energy flux distributions of the TE term, the TM term and the diffracted plane wave are also presented. The ratios of the power of the TE and TM terms to that of the diffracted plane wave are examined in the far-field. In addition, the far-field divergence angles of the TE term, the TM term and the diffracted plane wave, which are related to the energy flux distribution, are investigated. The different energy flux distributions of the TE and TM terms result in the discrepancy of their divergence angles. The influences of the linearly polarized angle and the radius of the circular aperture on the far-field divergence angles of the TE term, the TM term and the diffracted plane wave are discussed in detail. This research may promote the recognition of the optical propagation through a circular aperture.

引用

页数：9

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