title: Out-of-plane reflection and refraction of light by anisotropic optical antenna metasurfaces with phase discontinuities.
abstract: Experiments on ultrathin anisotropic arrays of subwavelength optical antennas display out-of-plane refraction. A powerful three-dimensional (3D) extension of the recently demonstrated generalized laws of refraction and reflection shows that the interface imparts a tangential wavevector to the incident light leading to anomalous beams, which in general are noncoplanar with the incident beam. The refracted beam direction can be controlled by varying the angle between the plane of incidence and the antenna array.
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Francesco
authors.initials: F
authors.lastname: Aieta
authors.forename: Patrice
authors.initials: P
authors.lastname: Genevet
authors.forename: Nanfang
authors.initials: N
authors.lastname: Yu
authors.forename: Mikhail A
authors.initials: MA
authors.lastname: Kats
authors.forename: Zeno
authors.initials: Z
authors.lastname: Gaburro
authors.forename: Federico
authors.initials: F
authors.lastname: Capasso
mesh_terms: D016880:Anisotropy; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D055096:Optical Devices; D010316:Particle Size; D010783:Photometry / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation