C. Croenne, F. Garet, J. Carbonell, É. Lheurette, K. Blary, J. Coutaz, D. Lippens
{"title":"Subwavelength hole arrayed stack: Towards terahertz high resolution imaging systems","authors":"C. Croenne, F. Garet, J. Carbonell, É. Lheurette, K. Blary, J. Coutaz, D. Lippens","doi":"10.1109/EUMC.2009.5296156","DOIUrl":null,"url":null,"abstract":"We report on the electromagnetic response of a stack of sub-wavelength hole metal arrays. The samples were designed for exhibiting left-handed dispersion branches under normal incidence and their transmissivity were optimized via the fabrication of elliptic-shaped holes. An experimental evidence of ground left handed dispersion branches was found around 0.45 THz by time-domain terahertz spectroscopy, supported by full wave simulations. The insertion losses are 3dB for a five-layer structure, this good level being explained by successful impedance matching. This result paves the way of high transmissivity high resolution focusing devices.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 European Microwave Conference (EuMC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUMC.2009.5296156","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
We report on the electromagnetic response of a stack of sub-wavelength hole metal arrays. The samples were designed for exhibiting left-handed dispersion branches under normal incidence and their transmissivity were optimized via the fabrication of elliptic-shaped holes. An experimental evidence of ground left handed dispersion branches was found around 0.45 THz by time-domain terahertz spectroscopy, supported by full wave simulations. The insertion losses are 3dB for a five-layer structure, this good level being explained by successful impedance matching. This result paves the way of high transmissivity high resolution focusing devices.
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