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 …

Herein, we have discussed three major methods which have been generally employed for
the generation of optical beams with orbital angular momentum (OAM). These methods …

The orbital angular momentum (OAM) of light has attracted a great amount of interest in
recent times, due to the wide variety of applications it has made possible. Generally, the …

Optical metrology is a well-established subject, dating back to early interferometry
techniques utilizing light's linear momentum through fringes. In recent years, significant …

Liquid crystal (LC) circular polarization gratings (PGs), also known as Pancharatnam–Berry
(PB) phase deflectors, are diffractive waveplates with linearly changed optical anisotropy …

Orbital angular momentum (OAM) spectrum diagnosis is a fundamental building block for
diverse OAM-based systems. Among others, the simple on-axis interferometric …

This paper provides a technical review regarding the latest progress on orbital angular
momentum (OAM) based sensing technologies in many diverse applications. OAM has a …

Recently, orbital angular momentum (OAM) has been adopted to measure the shape of
static objects and the translation motion of moving objects in optical remote sensing. Most of …

Normally, intensity patterns of vortex beams are closed rings such as Laguerre–Gaussian
beams and Bessel–Gaussian beams. Recent studies showed that the vortex beams with …

In recent years, the orbital angular momentum (OAM) of light with a central phase singularity
composed of a specific topological charge has attracted increasing attentions. In addition to …