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 …

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 …

Interest in the multiple facets of optical vortices has flourished in the last three decades. This
review examines the basic research and applications of the interplay between optical …

The connection between laser‐based material processing and additive manufacturing is
quite deeply rooted. In fact, the spark that started the field of additive manufacturing is the …

Orbital angular momentum (OAM) of light is an important feature of structured
electromagnetic fields exhibiting non-uniform spatial distribution. In contrast to a spin …

Major advances in X-ray sources including the development of circularly polarized and
orbital angular momentum pulses make it possible to probe matter chirality at …

Recent work has shown that irradiation with light possessing orbital angular momentum
(OAM) and an associated phase singularity, that is an optical vortex, twists a variety of …

Since the second half of the 20th century, ideas to develop methods for the formation of
optical vortices (OVs) or OV beams–regions of circular motion of energy flow in an …

Metal nanostructures are, nowadays, extensively used in applications such as catalysis,
electronics, sensing, optoelectronics and others. These applications require the possibility to …

We present a theoretical and experimental investigation of a diffractive optical element—a
generalized spiral phase plate (GSPP) with a transmission function of exp [ig (φ)], where g …