Phase modulation property of metasurfaces based on chiral field interaction and its applications

Metasurfaces have been one of the quickly developed cutting edge research fields with potential important applications. In this paper, our previous research achievements of Pancharatnam-Berry type metasurfaces composed of nanorods were introduced, whose phase modulation presents interesting features. Such metasurface is capable of generating dispersion-less interfactial phase discontinuities and controlling the light propagation. Several functional applications were proposed and demonstrated, including anomalous refraction, dual-polarity metalens, broadband vortex beam generator, helicity-dependent surface plasmon polariton unidirectional excitation and three-dimensional metasurface holography.