Residue orbital angular momentum in interferenced double vortex beams with unequal topological charges

Discontinued Devices LC-R 3000 Spatial Light Modulators
Higher Order Modes / Optical Vortex / OAM Microscopy
Published on:
Authors: S. H. Tao, X.-C. Yuan, J. Lin, and R. E. Burge
Abstract:
“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.”

Open Access

Publication: Optics Express
Issue/Year: Optics Express, Vol. 14, Issue 2, pp. 535-541, 2006
DOI: 10.1364/OPEX.14.000535
Link: https://doi.org/10.1364/OPEX.14.000535

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