Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4826536
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Funding
- National Science Foundation of China [61007034 61028011, 61138001, 61107085, 61107053]
- U.S. National Science Foundation [ECCS-1232081]
- Major National Development Project of Scientific Instruments and Equipment [2011YQ150021]
- Tianjin Sci-Tech Program [10JCYBJC01400]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1232081] Funding Source: National Science Foundation
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Polarization conveys valuable information for electromagnetic signal processing exhibiting tremendous potential in developing application driven photonic devices. Manipulation of polarization state of an electromagnetic wave has drawn a lot of research interests in many different fields, especially in the terahertz regime. Here, we propose a unique approach to efficiently rotate the linear polarization of terahertz wave in a broadband configuration with tri-layer metasurfaces. We experimentally observe a nearly perfect orthogonal polarization conversion with an ultrahigh efficiency, demonstrating a ultrathin terahetz rotator. The Fabry-Perot cavity effect in the tri-layer metasurfaces is attributed to the underlying mechanism of high transmittance and polarization rotation. (C) 2013 AIP Publishing LLC.
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