2008/06/10 by Li-Gang Wang, Wei-Wei Zheng, Li-Qin Wang · 29 citations
Engineering · Physics and Astronomy · #Atmospheric optics #Atmospheric turbulence #Beam (structure) #Laser #Nonlinear Photonic Systems #Optical Wireless Communication Technologies #Optical vortex #Orbital Angular Momentum in Optics #Phase (matter) #Turbulence #Vortex #physics.optics
paper · pdf · doi:10.1088/1464-4258/11/6/065703
published in Journal of Optics A Pure and Applied Optics 11(6), 065703 (Springer Science+Business Media) · 10 pages, 5 figures
arxiv created 2008/06/10 · openalex publication_date 2009/03/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In this paper, we consider the effect of the atmospheric turbulence on the propagation of optical vertex formed from the radial coherent laser beam array, with the initially well-defined phase distribution. The propagation formula of the radial coherent laser array passing through the turbulent atmosphere is analytically derived by using the extended Huygens-Fresnel diffraction integral. Based on the derived formula, the effect of the atmospheric turbulence on the propagation properties of such laser arrays has been studied in great detail. Our main results show that the atmospheric turbulence may result in the prohibition of the formation of the optical vortex or the disappearance of the formed optical vortex, which are very different from that in the free space. The formed optical vortex with the higher topological charge may propagate over a much longer distance in the moderate or weak turbulent atmosphere. After the sufficient long-distance atmospheric propagation, all the output beams (even with initially different phase distributions) finally lose the vortex property and gradually become the Gaussian-shaped beams, and in this case the output beams actually become incoherent light fields due to the decoherence effect of the turbulent atmosphere.