Fourier hybrid circular Airy vortex beam

The Fourier hybrid circular Airy vortex beam (FHCAVB) is synthesized in the Fourier domain by preserving the intrinsic phase profile from the Fourier transform of the circular Airy vortex beam (CAVB), while substituting its amplitude with a Gaussian distribution. Despite these modifications, the FHCAVB retains key properties of the original CAVB, offering enhanced autofocusing contrast and maintaining controllability through the same set of parameters. This beam can be efficiently generated using pure-phase devices via a Fourier transform setup. In our experiments, the FHCAVB was successfully produced using a phase-only spatial light modulator (SLM) in a Fourier transform configuration, with results aligning well with simulations. As a high-fidelity approximation of the CAVB, this method for generating autofocusing Airy (AAF) vortex beams shows significant potential for applications in optical trapping, tweezing, communications, and related fields.