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Tornado waves

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posted on 2023-01-11, 22:09 authored by Apostolos Brimis, Konstantinos G. Makris, Dimitris G. Papazoglou
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 to a complex wave with intense lobes that twist and shrink in an accelerating fashion along propagation. By achieving angular acceleration values that exceed 295 rad\mm^2, these Tornado waves can find numerous applications in laser trapping, direct laser writing and high harmonic generation.



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