Fluctuations of the orbital angular momentum of a vortex laser beam in a turbulent atmosphere: dependence on the turbulence strength and beam parameters

摘要

The dependences of the orbital angular momentum of a Laguerre-Gaussian beam propagating through a turbulent atmosphere on its azimuthal index and atmospheric turbulence strength are analyzed in the numerical simulation. The effect of errors in alignment of the beam and receiver axes on the average value and variance of orbital angular momentum fluctuations is studied. The statistics of the orbital angular momentum distribution at the end of the atmospheric propagation path is analyzed.