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Proceedings Paper

A functional metasurface platform with unique building blocks: light manipulation and beam shaping
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Paper Abstract

This paper presents an engineered metasurface which can serve functionalities such as anomalous bending, focusing, and beam shaping over the circularly polarized (CP) incident beam. The building block is a bilayer double split-loop resonators (DSLRs) where it can fully transmit the impinging light and control phase only by rotation of unit-cell and not by changing the structural parameters which can greatly facilitate the fabrication process. The mechanism behind this fascinating feature can be described as the conversion of an impinging CP incident beam into the opposite handedness and obtaining a geometrical phase shift equal to twice the rotating angle of DSLRs. It is illustrated that full transmission with 2π phase shift can be achieved with the proposed metasurface. Unique designs with helicity dependency to realize anomalous bending, bifunctional convergence/divergence, and flat-top beam creation with applying lossless beam shaping approach are presented.

Paper Details

Date Published: 16 September 2016
PDF: 8 pages
Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 99180Y (16 September 2016); doi: 10.1117/12.2238084
Show Author Affiliations
Ali Forouzmand, Northeastern Univ. (United States)
Hossein Mosallaei, Northeastern Univ. (United States)

Published in SPIE Proceedings Vol. 9918:
Metamaterials, Metadevices, and Metasystems 2016
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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