Formation of optical vortices using coherent laser beam arrays

Li Gang Wang*, Li Qin Wang, Shi Yao ZHU

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

84 Citations (Scopus)


We present a proposal to generate an optical vortex beam by using the coherent-superposition of multi-beams in a radially symmetric configuration. In terms of the generalized Huygens-Fresnel diffraction integral, we have derived the general propagation expression for the coherent radial arrays of laser beams. Using the derived formulae, we have analyzed the effects of the beamlet number N, the separation distance ρ of the beamlets and the topological charge m on the intensity and phase distributions of the resultant beams. Our simulation results show that optical vortices could be efficiently generated due to the coherent-superposition effect of all beamlets, during the propagation process of the coherent radial array of laser beams with the initial well-organized phase distributions through the free space. In the focusing system, the resultant beam near the focusing plane has the strong rotational effect with the phase helicity.

Original languageEnglish
Pages (from-to)1088-1094
Number of pages7
JournalOptics Communications
Issue number6
Publication statusPublished - 15 Mar 2009

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


Dive into the research topics of 'Formation of optical vortices using coherent laser beam arrays'. Together they form a unique fingerprint.

Cite this