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Ultra-high-Q dielectric metasurface for polarization conversion

Abstract: In this work, a novel method to obtain all-dielectric toroidal response metasurfaces in the W-band and THz range is demonstrated. Two designs are proposed, a symmetric and asymmetric disk metasurface. The first design is intended to corroborate the theoretical analysis, demonstrating the excitation of a strong toroidal mode resonance at 93.2 GHz. Then, the second design is used to demonstrate that symmetry-breaking variations in the disk dimensions, could lead to birefringent metasurfaces, affecting the polarization of the impinging light. Two structures are designed, a polarization beam splitter and a polarization converter. Such devices are difficult to obtain at the target frequency range with low absorption, so they could be of particular interest for the next generation of 5G communications and THz devices.

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Congress: Metamaterials, Metadevices, and Metasystems (2019 : San Diego, California)

Publisher: SPIE Society of Photo-Optical Instrumentation Engineers

Publication date: 05/09/2019

No. of pages: 7

Publication type: Conference object

DOI: 10.1117/12.2527908

ISSN: 0277-786X,1996-756X

Spanish project: TEC2013-47342-C2-2-R

Publication Url: https://doi.org/10.1117/12.2527908

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Authorship

JOSÉ FRANCISCO ALGORRI GENARO

ZOGRAFOPOULOS, DIMITRIOS C.

FERRARO, ANTONIO

BRAULIO GARCIA CAMARA

VERGAZ BENITO, RICARDO

BECCHERELLI, ROMEO

JOSE MANUEL SANCHEZ PENA

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