Flat Optics with Designer Metasurfaces

Abstract: Artificial structuring of metal-dielectric surfaces at the sub-wavelength scale provides great flexibility in designing the wavefront of scattered light and the propagation of surface polaritons through local control of the amplitude, phase and polarization, leading to a rich variety of phenomena and applications.1 Nanostructured holograms to generate exotic light beams and surface plasmon polaritons, new interference phenomena in films much thinner than the wavelength and flat photonic device application will be discussed.