Diffraction is a phenomenon related to the wave nature of light and arises when a
propagating wave comes across an obstacle. Consequently, the wave can be transformed in …

Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-
power laser radiation schemes. Nevertheless, it has drawbacks such as the produced …

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 …

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

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 …

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 …

Artificial intelligence (AI) significantly enhances the development of Meta-Optics (MOs),
which encompasses advanced optical components like metalenses and metasurfaces …

Helical light fields may carry both orbital angular and spin angular momentum which is
respectively associated with their helical wavefronts (optical vortices) and rotating transverse …

We report on the generation of an off-axis vortex with tunable non-integer orbital angular
momentum (OAM), generated using an idler-resonant mid-infrared optical parametric …