Thirty years ago, Coullet et al. proposed that a special optical field exists in laser cavities
bearing some analogy with the superfluid vortex. Since then, optical vortices have been …

BACKGROUND Optical vortices provide one of the promising solutions for enhancing the
capacity of data multiplexing to meet an unprecedented growth in big data and internet traffic …

The angular momentum of light can be described by positions on a higher-order Poincaré
sphere, where superpositions of spin and orbital angular momentum states give rise to laser …

This article reviews recent progress leading to the generation of optical vortex beams. After
introducing the basics of optical vortex beams and their promising applications, we …

Vector beams, and in particular vector vortex beams, have found many applications in recent
times, both as classical fields and as quantum states. While much attention has focused on …

Tailoring light properties using metasurfaces made of optically thin and subwavelength
structure arrays has led to a variety of innovative optical components with intriguing …

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 …

Orbital angular momentum (OAM) has demonstrated great success in the optical
communication field, which theoretically allows an infinite increase of the transmitted …

Since their first introduction in 2006, q-plates have found a constantly increasing number of
uses in diverse contexts, ranging from fundamental research on complex structured light …

Optical vortices, a type of structured beam with helical phase wavefronts and 'doughnut'-
shaped intensity distributions, have been used to fabricate chiral structures in metals and …