Analysis of interference of planar vortex beams

Hao Wang, Dexing Yang, Xuetao Gan, Jianlin Zhao, Xiaoyuan Ren, Hongzhen Jiang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The interference of several optical vortices can generate intriguing intensity and phase distributions due to the particular helical phase structures and central singularities. The interference of optical planar vortex, which has a phase singularity and a dark hole nested in an infinite plane-wave background, is simulated. The influences of the distances between the singularities and the topological charges of two planar vortices on the annihilations and creations of vortices are analyzed, respectively. Further, the interference of the symmetric point vortices is investigated numerically. The results show that a rich variety of the symmetric vortex arrays can be obtained by changing the number of the vortices and/or the topological charges. The interference of the symmetric point vortices is demonstrated experimentally by utilizing computer-generated holography and spatial light modulator. The experimental results are in good agreement with those of numerical simulation. It not only confirms the numerical results, but also demonstrates a convenient way of generating interference of complex optical vortices.

Original languageEnglish
Pages (from-to)517-522
Number of pages6
JournalGuangxue Xuebao/Acta Optica Sinica
Volume29
Issue number2
DOIs
StatePublished - Feb 2009

Keywords

  • Computer-generated holography
  • Interference of vortex beams
  • Numerical simulation
  • Optical vortex
  • Physical optics
  • Planar vortex beam

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