Topology, skyrmions, and superoscillation of structured light

Yijie Shen; Anatoly V. Zayats

doi:10.1117/12.2653880

17 March 2023 Topology, skyrmions, and superoscillation of structured light

Yijie Shen, Anatoly V. Zayats

Proceedings Volume PC12436, Complex Light and Optical Forces XVII; PC1243606 (2023) https://doi.org/10.1117/12.2653880
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Topological complex electromagnetic waves 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. Here we introduce an extended family of super-toroidal electromagnetic excitation, which exhibit skyrmionic structure of the electromagnetic fields, multiple singularities, and fractal-like energy backflow. By further introducing bandlimited effect into super-toroidal pulses, we show that space-time non-separable band-limited light fields can exhibit superoscillations simultaneously in the spatial and temporal domains, i.e. can oscillate faster that the highest harmonics of their spectra. The super-toroidal pulses with space-time superoscillation are of interest for transient light-matter interactions, ultrafast optics, spectroscopy, and toroidal electrodynamics.

Conference Presentation

Citation Download Citation

Yijie Shen and Anatoly V. Zayats "Topology, skyrmions, and superoscillation of structured light", Proc. SPIE PC12436, Complex Light and Optical Forces XVII, PC1243606 (17 March 2023); https://doi.org/10.1117/12.2653880

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