2008/05/27 by Li‐Gang Wang, Li-Gang Wang, Li-Qin Wang +1 · 80 citations
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Beam (structure) #Diffraction #Fresnel diffraction #Fresnel number #Laser #Laser-Matter Interactions and Applications #Light beam #Optical vortex #Optics #Orbital Angular Momentum in Optics #Phase (matter) #Physics #Plant Reproductive Biology #Quantum mechanics #Superposition principle #Talbot effect #Topological quantum number #Vortex #physics.optics
paper · pdf · doi:10.1016/j.optcom.2008.12.004
published in Optics Communications 282(6), 1088-1094 (Elsevier BV) · 10 pages, 8 figures
arxiv created 2008/05/27 · openalex publication_date 2008/12/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We present a novel proposal to generate an optical vortex beam by using the coherent-superposition of multi-beams in a radial symmetrical configuration. In terms of the generalized Huygens-Fresnel diffraction integral, we have derived the general propagation expression for the coherent radial laser arrays. Based on the derived formulae, we have analyzed the effects of the beamlet number, the separation distance of the beamlets and the topological charge on the intensity and phase distributions of the resulted beams. Our simulation results show that optical vortices could be efficiently formed and generated due to the interference and superposition effect of all the beamlets, during the propagation process of the coherent radial laser arrays with the initial well-organized phase distributions through the free space. In the focusing system, the resulted beam near the focusing plane has the strong rotation effect with the phase helicity.