Terahertz Artificial Dielectric Lens

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dc.citation.journalTitleScientific Reportsen_US
dc.citation.volumeNumber6en_US
dc.contributor.authorMendis, Rajinden_US
dc.contributor.authorNagai, Masayaen_US
dc.contributor.authorWang, Yiqiuen_US
dc.contributor.authorKarl, Nicholasen_US
dc.contributor.authorMittleman, Daniel M.en_US
dc.date.accessioned2017-05-02T21:09:55Z
dc.date.available2017-05-02T21:09:55Z
dc.date.issued2016en_US
dc.description.abstractWe have designed, fabricated, and experimentally characterized a lens for the THz regime based on artificial dielectrics. These are man-made media that mimic properties of naturally occurring dielectric media, or even manifest properties that cannot generally occur in nature. For example, the well-known dielectric property, the refractive index, which usually has a value greater than unity, can have a value less than unity in an artificial dielectric. For our lens, the artificial-dielectric medium is made up of a parallel stack of 100 μm thick metal plates that form an array of parallel-plate waveguides. The convergent lens has a plano-concave geometry, in contrast to conventional dielectric lenses. Our results demonstrate that this lens is capable of focusing a 2 cm diameter beam to a spot size of 4 mm, at the design frequency of 0.17 THz. The results further demonstrate that the overall power transmission of the lens can be better than certain conventional dielectric lenses commonly used in the THz regime. Intriguingly, we also observe that under certain conditions, the lens boundary demarcated by the discontinuous plate edges actually resembles a smooth continuous surface. These results highlight the importance of this artificial-dielectric technology for the development of future THz-wave devices.en_US
dc.identifier.citationMendis, Rajind, Nagai, Masaya, Wang, Yiqiu, et al.. "Terahertz Artificial Dielectric Lens." <i>Scientific Reports,</i> 6, (2016) Springer Nature: https://doi.org/10.1038/srep23023.
dc.identifier.doihttps://doi.org/10.1038/srep23023en_US
dc.identifier.urihttps://hdl.handle.net/1911/94116
dc.language.isoengen_US
dc.publisherSpringer Nature
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the materialen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleTerahertz Artificial Dielectric Lensen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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