Fourier-space generation of circular Airy array vortex beam

We designed an effective customized pure phase mask in the Fourier space for generating a circular Airy array vortex beam (CAAVB). By precisely adjusting the phase distribution parameters, we could independently manipulate the topological charges, radius, and initial position of each sub-circular Airy vortex beam within the CAAVB. These sub-beams maintain unique diffraction trajectories during propagation without crosstalk. The corresponding experimental results demonstrate that the generation process corresponds well to the numerical simulations. Meanwhile, the flexible design space of beam structures is easy to expand with this design.