Thirty years ago, Coullet et al. proposed that a special optical field exists in laser cavities
bearing some analogy with the superfluid vortex. Since then, optical vortices have been …

The interest in tailoring light in all its degrees of freedom is steadily gaining traction, driven
by the tremendous developments in the toolkit for the creation, control and detection of what …

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 …

Interest in the multiple facets of optical vortices has flourished in the last three decades. This
review examines the basic research and applications of the interplay between optical …

As they travel through space, some light beams rotate. Such light beams have angular
momentum. There are two particularly important ways in which a light beam can rotate: if …

Light with spatiotemporal orbital angular momentum (ST-OAM) is a recently discovered type
of structured and localized electromagnetic field. This field carries characteristic space–time …

Publisher Summary This chapter discusses the orbital angular momentum of light, outlines
the theoretical basis for the orbital angular momentum of beams within the paraxial …

Publisher Summary The widespread availability of spatially and temporally coherent laser
sources makes the production of optical vortices inevitable in any experiment involving …

A beam with an angular-dependant phase Φ= ℓ ϕ about the beam axis carries an orbital
angular momentum of ℓ ℏ per photon. Such beams are exploited to provide superresolution …

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 …