Evolution Properties of a Partially Coherent Laguerre Pulsed Vector Vortex Beam in a Turbulent Atmosphere with Anisotropy

Abstract

Based on the extended Huygens–Fresnel principle, we derive the analytical expression of the crossspectral density matrix of a partially coherent Laguerre pulsed vector vortex beam (PCLPVVB) propagating through isotropic and anisotropic atmospheric turbulence. Our outcomes reveal that the atmospheric turbulence affects the evolution of spectral intensity distribution of PCLPVVB, and the beam quickly degenerates on propagation in the strong turbulence. We also can find that PCLPVVB with a larger topological charge has a stronger ability to resist the degeneration caused by atmospheric turbulence in comparison with the non-vortex beam. In addition, increasing the initial coherence length and mode order can increase the anti-turbulence ability of PCLPVVB, and the pulse duration significantly affects the spectral intensity of PCLPVVB in turbulence. Our research results are important for some applications in laser radar detection, remote sensing, and free-space optical communication.