An experiment to observe the intensity and phase structure of Laguerre-Gaussian laser modes

被引：214

作者：

Padgett, M ^{[1
]}

Arlt, J ^{[1
]}

Simpson, N ^{[1
]}

Allen, L ^{[1
]}

机构：

[1] UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND

来源：

AMERICAN JOURNAL OF PHYSICS | 1996年 / 64卷 / 01期

基金：

俄罗斯基础研究基金会; 英国科学技术设施理事会; 美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1119/1.18283

中图分类号：

G40 [教育学];

学科分类号：

040101 ; 120403 ;

摘要：

We outline an easily reproduced experiment that allows the student to investigate the intensity and phase structure of transverse laser modes. In addition to discussing the usual Hermite-Gaussian laser modes we detail how Laguerre-Gaussian laser modes can be obtained by the direct conversion of the Hermite-Gaussian output. A Mach-Zehnder interferometer allows the phase structure of the Laguerre-Gaussian modes to be compared with the phase structure of a plane wave with the same frequency. The resulting interference patterns clearly illustrate the azimuthal phase dependence of the Laguerre-Gaussian modes, which is the origin of the orbital angular momentum associated with each of them. (C) 1996 American Association of Physics Teachers.

引用

页码：77 / 82

页数：6

共 12 条

[1] ORBITAL ANGULAR-MOMENTUM OF LIGHT AND THE TRANSFORMATION OF LAGUERRE-GAUSSIAN LASER MODES [J].