Superposition of two optical vortices with opposite integer or non-integer orbital angular momentum

This work develops a brief proposal to achieve the superposition of two opposite vortex beams, both with integer or non-integer mean value of the orbital angular momentum. The first part is about the generation of this kind of spatial light distributions through a modified Brown and Lohmann’s hologr...

Full description

Saved in:
Bibliographic Details
Published in:Ingeniería e investigación 2016-01, Vol.36 (1), p.79-84
Main Authors: Diaz Meza, Carlos Fernando, Torres Moreno, Yezid, Acevedo Caceres, Cristian Hernando
Format: Article
Language:English
Subjects:
ENGINEERING, MULTIDISCIPLINARY
Optical properties
Optical vortices
orbital angular momentum
Orbits
Physics
superposition
topological charge
Vortices
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work develops a brief proposal to achieve the superposition of two opposite vortex beams, both with integer or non-integer mean value of the orbital angular momentum. The first part is about the generation of this kind of spatial light distributions through a modified Brown and Lohmann’s hologram. The inclusion of a simple mathematical expression into the pixelated grid’s transmittance function, based in Fourier domain properties, shifts the diffraction orders counterclockwise and clockwise to the same point and allows the addition of different modes. The strategy is theoretically and experimentally validated for the case of two opposite rotation helical wavefronts.
ISSN:0120-5609
2248-8723
DOI:10.15446/ing.investig.v36n1.43948