Conventional metasurfaces based on geometric phase are constrained to spin‐locked
phase profile, resulting in mirrored functionalities for different spins. A single flat device that …

Metasurfaces have drawn considerable attentions for their revolutionary capability of
tailoring the amplitude, phase, and polarization of light. By integrating the nonlinear optical …

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

The generation of photons with spin and orbital angular momentum is of great importance in
the fields of classical and quantum optical communications. Recent studies show that optical …

In spite of a wide range of applications ranging from particle trapping to optical
communication, conventional methods to generate vortex beams suffer from bulky …

The spatial variation of vector vortex beams with arbitrary polarization states and orbital
angular momentum (OAM) values along the beam propagation is demonstrated by using …

Describing a class of beams with space-variant polarization, vector beams find many
applications in both classical and quantum optics. However, simultaneous manipulation of …

Due to the physically unrestricted set of orthogonally helical modes of orbital angular
momentum (OAM), it has contributed significantly to wireless communication and information …

Controlling the wavefront and manipulating the polarization of the electromagnetic wave
using an ultrathin flat device are highly desirable in many emerging fields. To shape the …

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