Stream function for optical energy flow

被引：11

作者：

Berry, M. V. ^{[1
]}

Dennis, M. R. ^{[1
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

来源：

JOURNAL OF OPTICS | 2011年 / 13卷 / 06期

关键词：

Poynting; rays; flux; interference; polarization; BEAMS;

D O I：

10.1088/2040-8978/13/6/064004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A formula is presented for the stream function S corresponding to optical fields in the plane that can be represented as a superposition of plane waves with the same transverse wavenumbers, including evanescent waves. Energy flow lines (parallel to the Poynting vector) are easily computed as contour lines of S. Optical vortices (including higher-order vortices) correspond to extrema of S.

引用

页数：4

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