Abstract
We show that light spiraling like a tornado can be generated by
superimposing abruptly auto-focusing ring-Airy beams that carry
orbital angular momentum of opposite handedness. With different
parabolic propagation trajectories, the superimposing ring-Airy beams
are tailored to abruptly auto-focus at overlapping focal regions. This
results in a complex wave with intense lobes that twist and shrink in
an accelerating fashion along propagation. By achieving angular
acceleration values that exceed , these tornado waves can find numerous
applications in laser trapping, direct laser writing, and
high-harmonic generation.
© 2020 Optical Society of
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