As an indispensable complement to an integer vortex beam, the fractional vortex beam has
unique physical properties such as radially notched intensity distribution, complex phase …

We theoretically show that optical vortices conserve the integer topological charge (TC)
when passing through an arbitrary aperture or shifted from the optical axis of an arbitrary …

In the general case, upon free-space propagation of a paraxial optical vortex (OV) its
topological charge (TC) is not conserved, unlike the orbital angular momentum (OAM) …

This book is devoted to the consideration of unusual laser beams–vortex or singular beams.
It contains many numerical examples, which clearly show how the phase of optical vortices …

A new kind of partially coherent vector beam, named a partially coherent radially polarized
fractional vortex (PCRPFV) beam, is introduced as a natural extension of the recently …

A general analytical formula for the propagation of the new kind of power-exponent-phase
vortex beam through a paraxial ABCD optical system is derived. With two different …

Orbital angular momentum (OAM) is a new physical dimension that has revolutionized
optical communication. This paper presents the common vortex beams (VBs) and the state …

The generation, propagation, and applications of different types of integer vector beams
have been extensively investigated. However, little attention focuses on the photophysical …

A new type of spatially structured light field carrying orbital angular momentum (OAM) mode
with any non-integer topological order, referred to as the spiral fractional vortex beam, is …

In this paper, the circular Airy derivative beams carrying rotationally-symmetric power-
exponent-phase vortices are proposed for the first time, whose evolutionary properties are …