Broadband Terahertz Plasmonic Wave Retarders
Refereed conference paper presented and published in conference proceedings


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AbstractWe report ultra-broadband, easily tuned, and highly efficient metamaterial terahertz wave retarders that are able to convert linear polarization into circular and elliptical polarization states. The broadband nature arises from the combination of the plasmonic effect and the property of polarization conversion. The dielectric response of the metamaterial microstructure and the angular phase dispersion of the grating coupler allow tuning of the flat phase differences from zero to 110 degree within the range of a few terahertz while keeping the magnitudes of the two orthogonally transmitted waves equal. In particular, a high degree of circular polarization (>0.99) can be achieved between 1.78 and 4.88 THz for a specific dielectric value of spacer material and angle of incidence. Our study opens new opportunities for manipulating the broadband polarization responses of terahertz waves, and hence enables implementation of novel functional devices based on metamaterials for terahertz wave imaging and spectroscopy.
All Author(s) ListChunrui Han, Edward Parrott, Emma Pickwell‐MacPherson
Name of Conference41st International Conference on Infrared, Millimeter and Terahertz Waves
Start Date of Conference25/09/2016
End Date of Conference30/09/2016
Place of ConferenceCopenhagen, Denmark - Bella Center
Country/Region of ConferenceDenmark
Journal name2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)
Proceedings TitleInfrared, Millimeter, and Terahertz waves (IRMMW-THz), 2016 41st International Conference on
Title of Publication2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)
Year2016
PublisherIEEE
ISBN978-1-4673-8485-8
ISSN2162-2027
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesEngineering, Electrical & Electronic;Physics, Applied;Engineering;Physics

Last updated on 2021-05-05 at 01:22