Abstract

Geometrical phase (also known as Pancharatnam–Berry phase [1,2].) elements and their applications are booming nowadays: from devices like high NA metalenses to special optics like s-waveplates [3], from wavelengths in the ultraviolet to the THz diapason. The reason behind such flexibility is due to variety of different production approaches – lithography based, sculptured coatings etc. and due to the varying orientation and individual properties of sub-elements of the GPE. Such elements can act as both scalar and vectorial diffractive optical elements (or as shapers of the spatial spectra of the input beam), but usually their vectorial properties are largely ignored due to the complexity of mastering phases and amplitudes of both transverse components.

© 2019 IEEE