{"title":"Combined Metalens for Detecting Optical Vortices and Polarization States","authors":"A. G. Nalimov, V. V. Kotlyar","doi":"10.1134/S2635167624602687","DOIUrl":null,"url":null,"abstract":"<p>A metasurface, including a metalens, in a thin film of amorphous silicon for the visible range is considered. This metasurface enables the simultaneous determination of topological charges –1, 1, –2, and 2 and the direction of rotation of the polarization vector (clockwise or counterclockwise) in an axial superposition of four optical vortices with left- and right-handed circular polarization by measuring the intensity at several specified points at a certain distance from it. The metasurface is composed of two simpler metasurfaces, parts of which are assembled into a combined metasurface in a checkerboard pattern. To form a metalens, a binary zone plate is embedded into the metasurface. The working element of the metasurface (its meta-atom) is a binary subwavelength diffraction grating, the rotation angle of the polarization vector of which depends on the slopes of the lines.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"19 1 supplement","pages":"S59 - S67"},"PeriodicalIF":0.8000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanotechnologies in Russia","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S2635167624602687","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
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Abstract
A metasurface, including a metalens, in a thin film of amorphous silicon for the visible range is considered. This metasurface enables the simultaneous determination of topological charges –1, 1, –2, and 2 and the direction of rotation of the polarization vector (clockwise or counterclockwise) in an axial superposition of four optical vortices with left- and right-handed circular polarization by measuring the intensity at several specified points at a certain distance from it. The metasurface is composed of two simpler metasurfaces, parts of which are assembled into a combined metasurface in a checkerboard pattern. To form a metalens, a binary zone plate is embedded into the metasurface. The working element of the metasurface (its meta-atom) is a binary subwavelength diffraction grating, the rotation angle of the polarization vector of which depends on the slopes of the lines.
期刊介绍：
Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.
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