Diffractive waveplates: introduction

摘要

This feature issue of the journal is the first one to bring together ongoing research from many groups developing diffractive waveplate technology. This technology combines the best of three worlds-the thinness of diffraction gratings, the broad bandwidth and high efficiency of conventional refractive optics, and the low-cost fast manufacturing of polymer optics even in large area. The technology is at the intersection of polarization holography and polarization gratings, Pancharatnam-Berry or geometrical phase optics, waveplates, metasurfaces and planar optics. Optics will never be the same again! (C) 2019 Optical Society of America