Propagation characteristics of double vortex beam in turbulent atmosphere

This paper study the propagation characteristics of single and double vortex beams in the turbulent atmosphere, and firstly, the light intensity distribution and the evolution of the optical axis scintillation factor during the propagation of beams with different topological loads in the turbulent atmosphere are investigated. The results show that the propagation stability of vortex light is better than that of Gaussian beam during turbulent atmospheric propagation, and double-vortex beam is more stable than that of single-vortex beam and the absolute value of the difference in topological charge is larger. This may mean that in practical applications, the performance of the double-vortex beam can be optimized by selecting the appropriate topological load to provide better transmission stability in strong turbulent atmospheres.