{"title":"向向极化单环涡旋光束携带的固有轨道角动量的局限性","authors":"Xiaochao Cao , Zekai Xu , Shuguang Li","doi":"10.1016/j.optcom.2025.131514","DOIUrl":null,"url":null,"abstract":"<div><div>Ultrashort pulsed beams carrying intrinsic orbital angular momentum (OAM) have crucial applications in a variety of research fields. Based on the analytical expression of the vectorially polarized single-cycle vortex beams (VPSCVB) derived from the electric dipole radiation theory, we calculated the average intrinsic OAM carried per photon in an annular pulsed beam. Our results show the OAM will decrease dramatically as the pulse width go into single-cycle condition. This restriction can be attributed to the interaction between the spatiotemporal coupling and OAM. The changes in both polarization states and average OAM of VPSCVB with propagation distance reveals the conversion of angular momentum. Finally, we discuss the evolution properties of the pulse-front curvature (PFC) angles of VPSCVB.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"579 ","pages":"Article 131514"},"PeriodicalIF":2.5000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Limitations of intrinsic orbital angular momentum carried by the vectorially polarized single-cycle vortex beams\",\"authors\":\"Xiaochao Cao , Zekai Xu , Shuguang Li\",\"doi\":\"10.1016/j.optcom.2025.131514\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Ultrashort pulsed beams carrying intrinsic orbital angular momentum (OAM) have crucial applications in a variety of research fields. Based on the analytical expression of the vectorially polarized single-cycle vortex beams (VPSCVB) derived from the electric dipole radiation theory, we calculated the average intrinsic OAM carried per photon in an annular pulsed beam. Our results show the OAM will decrease dramatically as the pulse width go into single-cycle condition. This restriction can be attributed to the interaction between the spatiotemporal coupling and OAM. The changes in both polarization states and average OAM of VPSCVB with propagation distance reveals the conversion of angular momentum. Finally, we discuss the evolution properties of the pulse-front curvature (PFC) angles of VPSCVB.</div></div>\",\"PeriodicalId\":19586,\"journal\":{\"name\":\"Optics Communications\",\"volume\":\"579 \",\"pages\":\"Article 131514\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics Communications\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0030401825000422\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/13 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics Communications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030401825000422","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/13 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
Limitations of intrinsic orbital angular momentum carried by the vectorially polarized single-cycle vortex beams
Ultrashort pulsed beams carrying intrinsic orbital angular momentum (OAM) have crucial applications in a variety of research fields. Based on the analytical expression of the vectorially polarized single-cycle vortex beams (VPSCVB) derived from the electric dipole radiation theory, we calculated the average intrinsic OAM carried per photon in an annular pulsed beam. Our results show the OAM will decrease dramatically as the pulse width go into single-cycle condition. This restriction can be attributed to the interaction between the spatiotemporal coupling and OAM. The changes in both polarization states and average OAM of VPSCVB with propagation distance reveals the conversion of angular momentum. Finally, we discuss the evolution properties of the pulse-front curvature (PFC) angles of VPSCVB.
期刊介绍：
Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.
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