High-power ultrafast radially and azimuthally polarized accelerating Airy beams and their particle-like lattice topologies (2501.07480v1)

Abstract: Accelerating Airy beams, known for their non-diffracting nature, self-healing properties, and curved propagation trajectories, are solutions to the paraxial wave equation. In this work, we theoretically and experimentally investigate nonuniform (radially and azimuthally) polarized vector Airy beams. We provide an analytical representation of their spatial spectra and examine their electromagnetic field distributions in space. To validate the theoretical model, we have used a nanograting inscribed inside a glass volume by a femtosecond laser to create geometrical phase elements, suitable for the realization of high-power ultrafast radially and azimuthally polarized vector Airy beams. We have conducted experiments that confirm the successful generation of high-power vector beams and have performed Stokes parameter measurements of these beams. Additionally, we explore both theoretically and experimentally their topology, identifying particle-like formations such as skyrmionic and antiskyrmionc accelerating lattices within the high-power ultrafast electric fields and their Stokes parameters.