Abstract

Abrupt modifications of the fields across an interface can be engineered by depositing an array of sub-wavelength resonators specifically tailored to address local amplitude, phase and polarization changes [1]. Physically, ultrathin nanostructure arrays (δ≪λ), also called ‘‘optical metasurfaces’’, control light by engineering artificial boundary conditions of Maxwell’s equations. Metasurfaces have been implemented to obtain various sorts of optical functionalities, ranging from the basic control of the transmission and reflection of light[1-2], to the control of the radiation patterns for comprehensive wavefront engineering and holography[3]. In this presentation, we will review the recent works in this field and we will explain which physical mechanisms are utilized for the design of efficient planar optical components.

© 2017 IEEE