Optical communication systems on helical beams

The features of light beams propagation with a helical wavefront structure in information laser systems are analyzed. Calculations using parallel computing technology on the CUDA platform that significantly speeds up the calculation process is performed. The requirements for the alignment of the optical system with the multiplexing of beams in open propagation channels are formulated. It is shown that when radiation propagates in a medium with random inhomogeneities, the standard deviations of a Gaussian beam are one and a half times larger than the deviations of a beam with a helical wave-front shape. This indicates a high degree of stability of helical beams at atmospheric turbulent lines. A new method of generating high-power helical beams using the radiation of multi-pass modes of laser resonators is proposed.