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 …

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 …

Orbital angular momentum (OAM) has recently gained much interest in high‐speed optical
communication due to its spatial orthogonality. However, complex spatial phase distributions …

We obtain analytical expressions for the complex amplitudes of optical vortices deformed by
astigmatic transforms, ie, passed either through a cylindrical lens or through an inclined …

The review covers publications concerned with propagation of laser beams through
turbulent media described by the Kolmogorov theory and generalizations thereof to describe …

We deduce and study an analytical expression for Fresnel diffraction of a plane wave by a
spiral phase plate (SPP) that imparts an arbitrary-order phase singularity on the light field …

We report an atmospheric multichannel data transmission system with channel separation
by vortex beams of various orders, including half-integer values. For the demultiplexing of …

This book deals with theoretical bases of the modern optics division concerned with
coherent light fields with singularities characterized by phase uncertainty. Singular light …

We report on the high-quality holographic generation of higher-order Laguerre–Gaussian
(LG) beams using a liquid-crystal-on-silicon spatial light modulator. The effects of the input …

We report an approach to the increase of signal channels in free-space optical
communication based on composed optical vortices (OVs). In the encoding process …