Abstract
We experimentally generate optical tornado waves using spatial multiplexing on a single-phase modulation device. In their focal region, the intensity pattern outlines a spiral of decreasing radius and pitch. We examine the propagation dynamics of such novel waves and reveal the key factors that lead to angular acceleration. Moreover, we propose a two-color scheme that makes it possible to generate dynamically twisting light, an optical analog of a drill, that can rotate at THz frequencies.
2 More- Received 8 June 2021
- Revised 30 April 2022
- Accepted 3 May 2022
DOI:https://doi.org/10.1103/PhysRevA.105.053514
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