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Lett."],"published-print":{"date-parts":[[2026,8,15]]},"abstract":"<jats:p>A high-order spatiotemporal optical vortex (STOV) singularity generally splits into multiple first-order ones upon propagation. Here, we demonstrate the arrest of this splitting via electromagnetically induced transparency. This is achieved by establishing the condition for diffraction\u2013dispersion balance; solving this condition yields the specific system parameters that arrest the splitting. These solutions, located on the red-detuned side of absorption peaks, correspond to anomalous group-velocity dispersion and normal second-order loss dispersion. With the splitting arrested, we further characterize the spatiotemporal drift dynamics of the STOV singularity by deriving its drift trajectory and velocity. This drift, driven by first-order loss dispersion, exhibits a chiral asymmetry in direction dictated by the sign of the spatiotemporal topological charge.<\/jats:p>","DOI":"10.1364\/ol.610050","type":"journal-article","created":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T19:00:09Z","timestamp":1785956409000},"page":"4697","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Arresting the singularity splitting of spatiotemporal optical vortices via electromagnetically induced transparency"],"prefix":"10.1364","volume":"51","author":[{"given":"Jinhong","family":"Liu","sequence":"first","affiliation":[{"name":"Taiyuan Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0270-4792","authenticated-orcid":true,"given":"Jinze","family":"Wu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wcbdc92","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caixing","family":"Tian","sequence":"additional","affiliation":[{"name":"Taiyuan Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suhua","family":"Zheng","sequence":"additional","affiliation":[{"name":"Taiyuan Institute of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9242-4414","authenticated-orcid":true,"given":"Jinhong","family":"Li","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wcbdc92","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,8,13]]},"reference":[{"key":"ol-51-16-4697-R1","doi-asserted-by":"publisher","first-page":"031037","DOI":"10.1103\/PhysRevX.6.031037","type":"journal-article","volume":"6","author":"Jhajj","year":"2016","journal-title":"Phys. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}