{"title":"Toroidal and reverse flux of light in the sharp focus","authors":"V. Kotlyar, S. Stafeev, A. Kovalev","doi":"10.1109/CAOL46282.2019.9019574","DOIUrl":null,"url":null,"abstract":"We obtain a set of explicit analytical expressions that completely describe a light field with a double higher-order singularity (phase and polarization), as well as distributions of its intensity and energy flux near the focus.There is a reverse energy flux on the optical axis near the focus, which is comparable in magnitude with the forward flux. There is a toroidal energy flux in the focal area near the dark rings in the distribution of the longitudinal component of the Poynting vector.","PeriodicalId":308704,"journal":{"name":"2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL)","volume":"89 6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CAOL46282.2019.9019574","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We obtain a set of explicit analytical expressions that completely describe a light field with a double higher-order singularity (phase and polarization), as well as distributions of its intensity and energy flux near the focus.There is a reverse energy flux on the optical axis near the focus, which is comparable in magnitude with the forward flux. There is a toroidal energy flux in the focal area near the dark rings in the distribution of the longitudinal component of the Poynting vector.
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