Planar optical elements that can manipulate the multidimensional physical parameters of
light efficiently and compactly are highly sought after in modern optics and nanophotonics. In …

Multidimensional and large‐scale parallel manipulation of light, especially on‐demand
tailoring of the working frequency and spatial phase front, is highly pursued in modern …

Driven by their potential applications, vectorial optical fields with spatially inhomogeneous
states of polarization within the cross section have drawn significant attention recently. This …

Structured light refers to the light field tailored by various degrees of freedom including
intensity, phase, and polarization states in both spatial and temporal domains, which may …

Geometric phases have attracted considerable attention in recent years, due to their
capability of arbitrary beam sha** in a most efficient and compact way, while traditional …

Novel options for multiplexing, such as orbital angular momentum (OAM), are sought to
satisfy the explosive growth of information capacity. Consequently, spatial phase modulation …

A terahertz (THz) q-plate is proposed and demonstrated to generate THz vortex beams. It is
composed of a large birefringence liquid crystal (LC) with spatially-varying director …

Wavefront control lies at the heart of modern optics. Metasurfaces with specifically tailored
resonators can encode different phases to two orthogonal polarization components, but …