Poynting vector and orbital angular momentum density of superpositions of Bessel beams

被引：87

作者：

Litvin, Igor A. ^{[1
]}

Dudley, Angela ^{[1
,2
]}

Forbes, Andrew ^{[1
,2
]}

机构：

[1] CSIR Natl Laser Ctr, ZA-0001 Pretoria, South Africa

[2] Univ KwaZulu Natal, Sch Phys, ZA-4000 Durban, South Africa

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 18期

关键词：

CARRYING OPTICAL VORTICES; GAUSSIAN LASER MODES; LIGHT-BEAM; VORTEX BEAMS; PROPAGATION; PARTICLES; ELEMENT; STATES;

D O I：

10.1364/OE.19.016760

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study theoretically the orbital angular momentum (OAM) density in arbitrary scalar optical fields, and outline a simple approach using only a spatial light modulator to measure this density. We demonstrate the theory in the laboratory by creating superpositions of non-diffracting Bessel beams with digital holograms, and find that the OAM distribution in the superposition field matches the predicted values. Knowledge of the OAM distribution has relevance in optical trapping and tweezing, and quantum information processing. (C) 2011 Optical Society of America

引用

页码：16760 / 16771

页数：12

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