Metasurfaces, the two-dimensional (2D) metamaterials, facilitate the implementation of
abrupt phase discontinuities using an array of ultrathin and subwavelength features. These …

Recently, an intriguing 2D metamaterial, called the metasurface,[24] has gained attention
due to its ability to manipulate optical phase fronts. Instead of acquiring a desired phase …

Metasurfaces are ultrathin artificially engineered structures exquisitely designed to tailor the
wavefront, polarization, and amplitude of incident light, offering a versatile platform for …

Due to the topological charge-independent doughnut spatial structure as well as the
association of orbital angular momentums, perfect vortex beams promise significant …

Manipulating circularly‐polarized (CP) waves in desired multi‐prescribed manners,
especially in both transmission and reflection schemes, in a single flat device is of particular …

Perfect vortex (PV) beams possess a radial intensity profile independent of their topological
charges, overcoming the defects of the regular vortex beams. However, the bulky optical …

Controlling light with a thin flat device is highly desirable in modern optics. A particular
prospect in this area is a metasurface that independently shows distinct functionalities for …

Perfect vortex (PV) beams possessing annular intensity profiles independent of topological
charges promise significant advances in particle manipulation, fiber communication, and …

Optical vortices (OVs) created from helical modes of light have extensive applications in
optical manipulation, imaging, and optical communications. Moreover, modulated optical …

Metasurfaces offer unprecedented freedom to manipulate electromagnetic waves at deeply
subwavelength scales. However, realizing a highly efficient metasurface, yet simple enough …