{"title":"Switchable terahertz polarization conversion via phase-change metasurface","authors":"Xiaofang Wu, F. Lan, Zongjun Shi, Ziqiang Yang","doi":"10.1109/PIERS.2017.8261714","DOIUrl":null,"url":null,"abstract":"We have designed a switchable ultrathin THz linearly and circularly reflective polarization converter (RPC) by inserting phase-change material, vanadium dioxide (VO2), into a chiral metasurface (CM). By thermally controlling of the VO2 phase transition, over 99.1% 90° linear polarization (LP) conversion modulation depth and dual-band linear to circular polarization (CP) conversion with ellipticity close to 1 have been obtained. These excellent properties make the composite chiral metamaterials particularly suitable for designing tunable polarization rotating devices, which can be widely used in detection, sensing and communications.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PIERS.2017.8261714","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
We have designed a switchable ultrathin THz linearly and circularly reflective polarization converter (RPC) by inserting phase-change material, vanadium dioxide (VO2), into a chiral metasurface (CM). By thermally controlling of the VO2 phase transition, over 99.1% 90° linear polarization (LP) conversion modulation depth and dual-band linear to circular polarization (CP) conversion with ellipticity close to 1 have been obtained. These excellent properties make the composite chiral metamaterials particularly suitable for designing tunable polarization rotating devices, which can be widely used in detection, sensing and communications.