{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T18:04:56Z","timestamp":1785434696375,"version":"3.56.0"},"reference-count":20,"publisher":"Optica Publishing Group","issue":"14","license":[{"start":{"date-parts":[[2023,6,21]],"date-time":"2023-06-21T00:00:00Z","timestamp":1687305600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR-OA"},{"start":{"date-parts":[[2023,6,21]],"date-time":"2023-06-21T00:00:00Z","timestamp":1687305600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"the National Natural Science Foundations of China","doi-asserted-by":"publisher","award":["62065006"],"award-info":[{"award-number":["62065006"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Natural Science Foundations of Guangxi","award":["2020GXNSFBA159059"],"award-info":[{"award-number":["2020GXNSFBA159059"]}]},{"name":"Guangxi Key Laboratory Project of Optoelectronic Information Processing","award":["GD20103"],"award-info":[{"award-number":["GD20103"]}]},{"name":"Guangxi Key Laboratory Project of Automatic Detection Technology and Instrument","award":["YQ20103"],"award-info":[{"award-number":["YQ20103"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Express"],"published-print":{"date-parts":[[2023,7,3]]},"abstract":"<jats:p>Since Ciattoni A. et al. found that a particular circularly polarized beam propagating along the optical axis in a uniaxial crystal can generate a vortex with a reversed circular polarization, numerous studies of spin-orbit coupling in this polarization conversion process have been carried out. In this paper, from another perspective rather than the circular polarization conversion, for the first time we find that radial- and azimuthal-polarization components will be separated and finally focus on two separated focus points when circular Airy vortex beams propagate in a uniaxial crystal. Both the separation of the radial- and azimuthal-polarization components in positive and negative uniaxial crystals are investigated, and the physical mechanism of this phenomenon is explained in details. Moreover, the influences of the crystal length and birefringence on the separation of the radial- and azimuthal-polarization components are also discussed. Our results could offer deeper understanding of the propagation of light beam in uniaxial crystal and facilitate the flexible applications of circular Airy vortex beams.<\/jats:p>","DOI":"10.1364\/oe.491309","type":"journal-article","created":{"date-parts":[[2023,6,14]],"date-time":"2023-06-14T12:00:08Z","timestamp":1686744008000},"page":"22507","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Separating radial and azimuthal polarizations of circular Airy vortex beam via uniaxial crystal"],"prefix":"10.1364","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5130-7326","authenticated-orcid":true,"given":"Houquan","family":"Liu","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Guilin University of Electronics Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2425-4553","authenticated-orcid":true,"given":"Libo","family":"Yuan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05arjae42","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Guilin University of Electronics Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2023,6,21]]},"reference":[{"key":"oe-31-14-22507-R1","doi-asserted-by":"publisher","first-page":"1656","DOI":"10.1364\/JOSAA.18.001656","volume":"18","author":"Ciattoni","year":"2001","journal-title":"J. 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