Research on the Propagation Characteristics of Power Exponential Vortex Beams in Hypersonic Plasma Turbulence

Orbital angular momentum (OAM) has a unique mode division multiplexing model that can increase the communication capacity and density of laser communication without increasing the frequency spectrum while achieving high-density and high-capacity laser communication and greatly improving transmission capacity. This letter conducts the model in hypersonic target plasma turbulence and investigates the OAM multiplexing characteristics in line-of-sight multiple-input–multiple-output systems under a plasma turbulence environment. The singular value (SV) and spectrum efficiency (SE) of power exponential vortex beams are compared with those of normal vortex beams. In addition, the intensity and phase of the power exponential vortex light penetrating turbulence are analyzed. Results show that the SE and SV of power exponential vortex beams are higher than those of ordinary vortex beams in hypersonic plasma turbulence under certain conditions. This finding indicates that the communication performance of power exponential vortex beams in plasma turbulence is better than that of ordinary vortex beams. These results can provide a theoretical basis for the analysis of hypersonic plasma targets.