Open AccessPlasmonic metasurfaces for efficient phase control in reflection
Author(s) -
Anders Pors,
Sergey I. Bozhevolnyi
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.027438
Subject(s) - optics , birefringence , polarization (electrochemistry) , plasmon , wavelength , materials science , orthogonal polarization spectral imaging , surface plasmon , resonator , diffraction , phase (matter) , optoelectronics , phase modulation , physics , laser , chemistry , quantum mechanics , phase noise
We numerically study the optical properties of metal-insulator-metal resonators and metasurfaces, emphasizing the presence of gap-surface plasmon (GSP) resonances and their connection to the optical response. In relation to birefringent metal-backed metasurfaces, we show how a combination of metal nanobrick and nanocross elements allows one to fully control the phase of reflected light for two orthogonal polarizations simultaneously. The approach is exemplified by the design of a gradient birefringent metasurface that reflects two orthogonal polarization states into +2 and -3 diffraction order, respectively, with a reflectivity up to ~ 80% and in a broad wavelength range around the design wavelength of 800 nm. Finally, we introduce the concept of metascatterers, which are wavelength-sized polarization-sensitive scatterers.