Perfect space-time vortices

We introduce the concept of perfect space-time vortices (PSTVs) that can exist in media with anomalous dispersion. If the topological charge of a PSTV is not too large, the spatiotemporal intensity distribution of the vortex field does not depend on the magnitude of the topological charge. We show t...

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Bibliographic Details
Published in:Optics letters 2024-08, Vol.49 (15), p.4322
Main Authors: Ponomarenko, Sergey A, Hebri, Davud
Format: Article
Language:English
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Summary:We introduce the concept of perfect space-time vortices (PSTVs) that can exist in media with anomalous dispersion. If the topological charge of a PSTV is not too large, the spatiotemporal intensity distribution of the vortex field does not depend on the magnitude of the topological charge. We show theoretically how a PSTV can be realized in the optical context through spatiotemporal focusing of a Bessel-Gaussian space-time optical vortex source that is placed in the focal plane of a space-time lens composed of an ordinary lens and a time lens with matched spatial and temporal focal lengths.
ISSN:0146-9592
1539-4794
1539-4794
DOI:10.1364/OL.529611