Abstract
Geometric phase metasurface (GPM) elements are two dimensional space variant gradient structures, which enable exotic light manipulation. Such structures consist of a dense assembly of resonant optical nanoantennas, the size parameters and orientation of which dictate local light-matter interactions. The GPM elements have been extensively studied, showing that they can control of the phase, amplitude, polarization and orbital angular momentum of light beams [1-4]. The GPM elements have been used as flat optical elements with unique features, as polarization control elements, and as spectro-polarimetric devices.
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