We present a detailed overview of the physics and applications of optical dark solitons:
localized nonlinear waves (orholes') existing on a stable continuous wave (or extended finite …

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 …

This article reviews recent progress leading to the generation of optical vortex beams. After
introducing the basics of optical vortex beams and their promising applications, we …

What is singular optics? This new branch of modern physical optics deals with a wide class
of effects associated with phase singularities in wave fields, as well as with the topology of …

We explain that, unlike the spin angular momentum of a light beam which is always intrinsic,
the orbital angular momentum may be either extrinsic or intrinsic. Numerical calculations of …

Space-time wave packets (STWPs) constitute a broad class of pulsed optical fields that are
rigidly transported in linear media without diffraction or dispersion, and are therefore …

Möbius strips are three-dimensional geometrical structures, fascinating for their peculiar
property of being surfaces with only one “side”—or, more technically, being “nonorientable” …

We analyze the properties of light beams carrying phase singularities, or optical vortices.
The transformations of topological charge during free-space propagation of a light wave …

We describe the fabrication and characterization of a high-quality spiral phase plate as a
device to generate optical vortices of low (3–5) specified charge at visible wavelengths. The …

In recent years, metamaterials and metasurfaces have prospered in many fields of “science
and technology,” covering the entire electromagnetic spectrum. Metasurface devices …