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Phys Rev Lett. 2017 Mar 17;118(11):113901. doi: 10.1103/PhysRevLett.118.113901. Epub 2017 Mar 14.

Metasurface Polarization Optics: Independent Phase Control of Arbitrary Orthogonal States of Polarization.

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1
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.

Abstract

We present a method allowing for the imposition of two independent and arbitrary phase profiles on any pair of orthogonal states of polarization-linear, circular, or elliptical-relying only on simple, linearly birefringent wave plate elements arranged into metasurfaces. This stands in contrast to previous designs which could only address orthogonal linear, and to a limited extent, circular polarizations. Using this approach, we demonstrate chiral holograms characterized by fully independent far fields for each circular polarization and elliptical polarization beam splitters, both in the visible. This approach significantly expands the scope of metasurface polarization optics.

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