{"title":"用于超宽带吸收和宽带极化转换的双功能元表面","authors":"Guotai Liu;Rui Yang;Cheng Zhu;Zenghu Fan","doi":"10.1109/LPT.2024.3434950","DOIUrl":null,"url":null,"abstract":"We demonstrate the dynamically switching of the ultra-wideband absorption and the broadband polarization conversion through a bi-functional hybrid meta-surface design consisting of periodic stacked vanadium-dioxide (VO2) rings coated with graphene resonators. More specifically, such a hybrid graphene VO2 meta-surface is capable of trapping electromagnetic fields with more than 95% absorption rate from 1.43 to 8.96 THz when we impose 0 eV Fermi energy level over the graphene array with conducting-state VO2. On the other hand, highly efficient linear-to-circular polarization conversion with greater than 0.95 ellipticity can be achieved from 1.24 to 3.57 THz when the graphene Fermi energy level is set as 1 eV with insulating-state VO2. The design scheme using hybrid meta-surfaces with contemporary tunable materials to achieve ultra-wide band reconfigurable multi-functionalities, should pave the way for more advanced manipulations of electromagnetic fields.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Bi-Functional Meta-Surfaces for Ultra-Wideband Absorption and Broadband Polarization Conversion\",\"authors\":\"Guotai Liu;Rui Yang;Cheng Zhu;Zenghu Fan\",\"doi\":\"10.1109/LPT.2024.3434950\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We demonstrate the dynamically switching of the ultra-wideband absorption and the broadband polarization conversion through a bi-functional hybrid meta-surface design consisting of periodic stacked vanadium-dioxide (VO2) rings coated with graphene resonators. More specifically, such a hybrid graphene VO2 meta-surface is capable of trapping electromagnetic fields with more than 95% absorption rate from 1.43 to 8.96 THz when we impose 0 eV Fermi energy level over the graphene array with conducting-state VO2. On the other hand, highly efficient linear-to-circular polarization conversion with greater than 0.95 ellipticity can be achieved from 1.24 to 3.57 THz when the graphene Fermi energy level is set as 1 eV with insulating-state VO2. The design scheme using hybrid meta-surfaces with contemporary tunable materials to achieve ultra-wide band reconfigurable multi-functionalities, should pave the way for more advanced manipulations of electromagnetic fields.\",\"PeriodicalId\":13065,\"journal\":{\"name\":\"IEEE Photonics Technology Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-07-29\",\"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/10613794/\",\"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/10613794/","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}
Bi-Functional Meta-Surfaces for Ultra-Wideband Absorption and Broadband Polarization Conversion
We demonstrate the dynamically switching of the ultra-wideband absorption and the broadband polarization conversion through a bi-functional hybrid meta-surface design consisting of periodic stacked vanadium-dioxide (VO2) rings coated with graphene resonators. More specifically, such a hybrid graphene VO2 meta-surface is capable of trapping electromagnetic fields with more than 95% absorption rate from 1.43 to 8.96 THz when we impose 0 eV Fermi energy level over the graphene array with conducting-state VO2. On the other hand, highly efficient linear-to-circular polarization conversion with greater than 0.95 ellipticity can be achieved from 1.24 to 3.57 THz when the graphene Fermi energy level is set as 1 eV with insulating-state VO2. The design scheme using hybrid meta-surfaces with contemporary tunable materials to achieve ultra-wide band reconfigurable multi-functionalities, 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.