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arXiv · 1312.6903

Manipulating light at distance by a metasurface using momentum transformation

Mohamed A. Salem·Christophe Caloz
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Abstract

A momentum conservation approach is introduced to manipulate light at distance using metasurfaces. Given a specified field existing on one side of the metasurface and specified desired field transmitted from the opposite side, a general momentum boundary condition is established, which determines the amplitude, phase and polarization transformation to be induced by the metasurface. This approach, named momentum transformation, enables a systematic way to synthesize metasurfaces with complete control over the reflected and transmitted fields. Several synthesis illustrative examples are provided: a vortex hypergeometric-Gaussian beam and a "delayed-start" accelerated beam for Fresnel region manipulation, and a pencil beam radiator and a holographic repeater for Frauenhofer region manipulation.

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Mohamed A. Salem, Christophe Caloz. 2013-12-25. Manipulating light at distance by a metasurface using momentum transformation. https://doi.org/10.1364/oe.22.014530

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