Controlling Complex Drift Disturbances of Orbital Angular Momentum (OAM) Vortex Beams

This section presents a model for controlling the complex drift disturbance of the orbital angular momentum (OAM) vortex beam using a spiral beam. By deriving the analytical formula for the correlation function of Laguerre-Gaussian beams under independent drift disturbances, it reveals the periodic variations of the intensity distribution, average OAM, and OAM spectrum in the direction of the drift disturbance, with consistent experimental results. In order to study the impact of complex drift disturbances on this type of beam, this section also conducts experimental research on vortex beams affected by cross-correlation drift disturbances.