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 …

Two simple and high-efficiency techniques for measuring the orbital angular momentum
(OAM) of paraxial laser beams are proposed and studied numerically and experimentally …

As an essential component of the vortex beam, the fractional vortex beam has significantly
advanced various applications, such as optical imaging, optical communication, and particle …

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 …

We find a two-parameter family of astigmatic elliptical Gaussian (AEG) optical vortices, which
are free space modes up to scale and rotation. We calculate total normalized orbital angular …

Optical vortex beams with fractional topological charges (TCs) are generated by the
diffraction of a Gaussian beam using computer generated holograms embedded with mixed …

A novel technique to measure the orbital angular momentum (OAM) spectrum of the beam
obscured by a complex random media is proposed and experimentally demonstrated. This …

Optical vortices carrying orbital angular momentum (OAM) have attracted extensive attention
in recent decades because of their interesting applications in optical trapping, optical …

This paper predicts the existence of stable fractional vortex soliton (FVS) featuring an
opening gap in the intensity ring with fractional angular momentum in defocusing cubic …

Here we demonstrate particle beams that spiral in free space devoid of external fields. The
beams consist of electrons in two lobes that twist around each other along the optical axis …