Open AccessResidue orbital angular momentum in interferenced double vortex beams with unequal topological charges
Author(s) -
Shaohua Tao,
Xiaocong Yuan,
Jiao Lin,
R. E. Burge
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.14.000535
Subject(s) - angular momentum , physics , optical vortex , vortex , topological quantum number , optics , residual , beam (structure) , light beam , rotation (mathematics) , orbital angular momentum of light , concentric , total angular momentum quantum number , quantum mechanics , geometry , mathematics , algorithm , thermodynamics , computer science
When two vortex beams with unequal topological charges superpose coherently, orbital angular momentum (OAM) in the two beams would not be cancelled out completely in the interference. The residual OAMs contained by the superposed beam are located at different concentric rings and may have opposite orientations owing to the difference of the charges. The residual OAM can be confirmed by the rotation of microparticles when difference between the charges of two interfering beams is large.