AI Article Synopsis
- Supertoroidal light pulses are unique electromagnetic waves with special topological features, including skyrmionic configurations and energy backflow, but these properties typically don't last when they propagate.
- Researchers have introduced non-diffracting supertoroidal pulses (NDSTPs) that maintain their skyrmionic and vortex structures over long distances, overcoming the usual limitations.
- NDSTPs resemble the von Kármán vortex street pattern seen in fluids, making them promising for applications involving efficient information and energy transfer.
Article Abstract
Supertoroidal light pulses, as space-time nonseparable electromagnetic waves, exhibit unique topological properties including skyrmionic configurations, fractal-like singularities, and energy backflow in free space, which however do not survive upon propagation. Here, we introduce the non-diffracting supertoroidal pulses (NDSTPs) with propagation-robust skyrmionic and vortex field configurations that persists over arbitrary propagation distances. Intriguingly, the field structure of NDSTPs has a similarity with the von Kármán vortex street, a pattern of swirling vortices in fluid and gas dynamics with staggered singularities that can stably propagate forward. NDSTPs will be of interest as directed channels for information and energy transfer applications.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11161654 | PMC |
| http://dx.doi.org/10.1038/s41467-024-48927-5 | DOI Listing |
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Article Synopsis
- Supertoroidal light pulses are unique electromagnetic waves with special topological features, including skyrmionic configurations and energy backflow, but these properties typically don't last when they propagate.
- Researchers have introduced non-diffracting supertoroidal pulses (NDSTPs) that maintain their skyrmionic and vortex structures over long distances, overcoming the usual limitations.
- NDSTPs resemble the von Kármán vortex street pattern seen in fluids, making them promising for applications involving efficient information and energy transfer.
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Nat Commun
October 2021
Optoelectronics Research Centre, Centre for Photonic Metamaterials, University of Southampton, Southampton, SO17 1BJ, UK.
Topological complex transient electromagnetic fields give access to nontrivial light-matter interactions and provide additional degrees of freedom for information transfer. An important example of such electromagnetic excitations are space-time non-separable single-cycle pulses of toroidal topology, the exact solutions of Maxwell's equations described by Hellwarth and Nouchi in 1996 and recently observed experimentally. Here we introduce an extended family of electromagnetic excitation, the supertoroidal electromagnetic pulses, in which the Hellwarth-Nouchi pulse is just the simplest member.
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