Plasmonic metasurfaces for controlling harmonic generations

Abstract

In this chapter, we limit our discussion to nonlinear plasmonic metasurfaces and focus on recent progress in nonlinear plasmonic metasurfaces for manipulating second harmonic generation signals. We start with the discussion of selection rules of nonlinear harmonic generation for a circularly polarized incident fundamental beam. We then proceed with the different approaches for achieving phase control in a nonlinear metasurface and the various devices based on this effect. We further discuss the nonlinear chiral effect in a metasurface with planar chirality. Finally, we conclude and give an outlook on future directions.