Spatiotemporal Hermite-Gaussian skyrmions.

Authors

Yao Zhang, Zhangyu Zhou, Shuoshuo Zhang, Yuquan Zhang, Changjun Min, Xiaocong Yuan

Published in

Optics letters. Volume 51. Issue 21. Pages 6086-6089. Nov 01, 2026. Epub Oct 05, 2026.

Abstract

Recently, optical skyrmions with polarization topological structures have been extended from the spatial domain to spatiotemporal dimensions. However, previously reported spatiotemporal Laguerre-Gaussian (STLG) skyrmions are limited to a single skyrmion unit, and their topological texture degrades during propagation. Here, we theoretically propose and numerically investigate spatiotemporal Hermite-Gaussian (STHG) skyrmions, characterized as a multiunit skyrmion array within the spatiotemporal plane. Numerical results show that the central skyrmion array, excluding the outermost units, maintains an average skyrmion number above 0.8 over 10 Rayleigh lengths, and that the STHG skyrmions exhibit self-healing ability against partial obstructions, with the topological texture recovering after 1-1.5 Rayleigh lengths of propagation.

PMID:
42962129
Bibliographic data and abstract were imported from PubMed on 31 Oct 2026.

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