Graded metascreens to enable a new degree of nanoscale light management.

ABSTRACT: Optical metasurfaces, typically referred to as two-dimensional metamaterials, are arrays of engineered subwavelength inclusions suitably designed to tailor the light properties, including amplitude, phase and polarization state, over deeply subwavelength scales. By exploiting anomalous localized interactions of surface elements with optical waves, metasurfaces can go beyond the functionalities offered by conventional diffractive optical gratings. The innate simplicity of implementation and the distinct underlying physics of their wave-matter interaction distinguish metasurfaces from three-dimensional metamaterials and provide a valuable means of moulding optical waves in the desired manner. Here, we introduce a general approach based on the electromagnetic equivalence principle to develop

SUBMITTER: Mohammadi Estakhri N 

PROVIDER: S-EPMC4528829 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature