{"title":"High-efficiency Dual-band Bifocal Metalens Based on Reflective Metasurface","authors":"Rensheng Xie, Yiting Liu, Tailei Wang, Guohua Zhai, Jianjun Gao, Jun Ding","doi":"10.1109/COMPEM.2019.8778990","DOIUrl":null,"url":null,"abstract":"Achieving wavelength-independent behavior in a single metasurface is of great significance for electromagnetic integrated system. In this work, a novel dual-band meta-atom is proposed for reflecting the incident wave to its cross-polarized component with high efficiencies. Beside the phase modulation, the amplitude can also be tailored independently at two gigahertz frequencies. As a demonstration example, a dual-band bifocal reflective metalens is designed and numerically verified. The full-wave simulation results are in good agreement with the design goals.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COMPEM.2019.8778990","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
Achieving wavelength-independent behavior in a single metasurface is of great significance for electromagnetic integrated system. In this work, a novel dual-band meta-atom is proposed for reflecting the incident wave to its cross-polarized component with high efficiencies. Beside the phase modulation, the amplitude can also be tailored independently at two gigahertz frequencies. As a demonstration example, a dual-band bifocal reflective metalens is designed and numerically verified. The full-wave simulation results are in good agreement with the design goals.
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