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Terahertz focusing of multiple wavelengths by graphene metasurfaces

Liu, Liming; Zarate, Yair; Hattori, Haroldo; Neshev, Dragomir; Shadrivov, Ilya; Powell, David


Metasurfaces can achieve nearly arbitrary wavefront control based on manipulation of the wave phase profile. We propose a metasurface based on double graphene cut-wire resonators which can cover the complete 2p phase region with high reflection efficiency. This full phase coverage is essential for efficient wavefront manipulation, without reflecting energy into unwanted channels. A mirror capable of focusing multiple wavelengths is demonstrated numerically based on the proposed structure. The...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.4940231
Access Rights: Open Access


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