{"title":"基于石墨烯- vo2超表面的宽带吸收和可切换多波段偏振转换","authors":"Shuo Zhang;Yazheng Hao;Guotai Liu;Rui Yang","doi":"10.1109/LPT.2025.3581323","DOIUrl":null,"url":null,"abstract":"We demonstrate the broadband absorption and multiband switchable polarization conversions through a cascaded metasurface consisting of periodic gold split-ring resonator formed of two L-shaped patterns and metal square ring based on graphene and vanadium dioxide (VO2). More concretely, the metasurface is able to capture electromagnetic fields with a relative bandwidth of 116% and an absorption rate of more than 90% when graphene is applied with Fermi level of 0 eV and VO2 is in the conducting state. On the other hand, when we set the VO2 in the insulating state and the Fermi level of graphene is set to 0 eV, the structure enables broadband linear-to-linear polarization conversion with an efficiency greater than 90% over a relative bandwidth of 74.8%. Notably, when the Fermi level is adjusted to 1 eV, the structure functions as a multi-band linear-to-circular polarization converter. This design extends the function of polarization conversions without reducing the absorption bandwidth, should pave the way for more advanced manipulations of electromagnetic fields.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 18","pages":"1049-1052"},"PeriodicalIF":2.3000,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Broadband Absorption and Switchable Multiband Polarization Conversion via Graphene-VO2 Metasurface\",\"authors\":\"Shuo Zhang;Yazheng Hao;Guotai Liu;Rui Yang\",\"doi\":\"10.1109/LPT.2025.3581323\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We demonstrate the broadband absorption and multiband switchable polarization conversions through a cascaded metasurface consisting of periodic gold split-ring resonator formed of two L-shaped patterns and metal square ring based on graphene and vanadium dioxide (VO2). More concretely, the metasurface is able to capture electromagnetic fields with a relative bandwidth of 116% and an absorption rate of more than 90% when graphene is applied with Fermi level of 0 eV and VO2 is in the conducting state. On the other hand, when we set the VO2 in the insulating state and the Fermi level of graphene is set to 0 eV, the structure enables broadband linear-to-linear polarization conversion with an efficiency greater than 90% over a relative bandwidth of 74.8%. Notably, when the Fermi level is adjusted to 1 eV, the structure functions as a multi-band linear-to-circular polarization converter. This design extends the function of polarization conversions without reducing the absorption bandwidth, should pave the way for more advanced manipulations of electromagnetic fields.\",\"PeriodicalId\":13065,\"journal\":{\"name\":\"IEEE Photonics Technology Letters\",\"volume\":\"37 18\",\"pages\":\"1049-1052\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-06-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Photonics Technology Letters\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/11044335/\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/11044335/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Broadband Absorption and Switchable Multiband Polarization Conversion via Graphene-VO2 Metasurface
We demonstrate the broadband absorption and multiband switchable polarization conversions through a cascaded metasurface consisting of periodic gold split-ring resonator formed of two L-shaped patterns and metal square ring based on graphene and vanadium dioxide (VO2). More concretely, the metasurface is able to capture electromagnetic fields with a relative bandwidth of 116% and an absorption rate of more than 90% when graphene is applied with Fermi level of 0 eV and VO2 is in the conducting state. On the other hand, when we set the VO2 in the insulating state and the Fermi level of graphene is set to 0 eV, the structure enables broadband linear-to-linear polarization conversion with an efficiency greater than 90% over a relative bandwidth of 74.8%. Notably, when the Fermi level is adjusted to 1 eV, the structure functions as a multi-band linear-to-circular polarization converter. This design extends the function of polarization conversions without reducing the absorption bandwidth, should pave the way for more advanced manipulations of electromagnetic fields.
期刊介绍:
IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.