Laguerre–Gaussian (LG) beams are typical vortex beams with orbital angular momentum
(OAM), spiral wavefront phase, and donut-shaped intensity distribution. They are widely …

Structured light, also known as tailored light, shaped light, sculpted light, or custom light,
refers to a series of special light beams with spatially variant amplitudes and phases …

Light-carrying orbital angular momentum (OAM) has great potential in enhancing the
information channel capacity in both classical and quantum optical communications. Long …

The frequency sum of two laser beams carrying orbital angular momentum (OAM) in quasi-
phase matching crystals was reported. The situations in which one beam carried OAM, the …

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 …

Nonlinear optical processes of spatially structured light such as optical vortices and vector
optical fields have exhibited many interesting physical effects and found a variety of …

Nonlinear interaction between orbital angular momentum (OAM) modes has interesting
effects and tremendous applications in both classical and quantum realms. Here we …

Optical vortices are optical fields that possess a helical phase and orbital angular
momentum, which have found the application in micromanipulation, optical communication …

Coherent frequency conversion of structured light, ie the ability to manipulate the carrier
frequency of a wave front without distorting its spatial phase and intensity profile, provides …

The edge enhancement technique, as an effective method to represent the boundary of
objects, plays an important role in image processing. Among them, the vortex filtering, which …