Progress in electron-beam spectroscopies has recently enabled the study of optical
excitations with combined space, energy and time resolution in the nanometre …

Vortex states of photons, electrons, and other particles are non-plane-wave solutions of the
corresponding wave equation with helicoidal wave fronts. These states possess an intrinsic …

Spatiotemporal sculpturing of light pulse with ultimately sophisticated structures represents a
major goal of the everlasting pursue of ultra-fast information transmission and processing as …

Structured waves are ubiquitous for all areas of wave physics, both classical and quantum,
where the wavefields are inhomogeneous and cannot be approximated by a single plane …

Vortices in fluids and gases have piqued the human interest for centuries. Development of
classical-wave physics and quantum mechanics highlighted wave vortices characterized by …

Recently, spatiotemporal optical vortex pulses carrying a purely transverse intrinsic orbital
angular momentum were generated experimentally [Optica 6, 1547 (2019) OPTIC8 2334 …

INTRODUCTION The science of light has undergone two major revolutions over the
previous two centuries. The first—by Grimaldi, Huygens, Fresnel, Young, and Maxwell …

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 …

The recent prediction and subsequent creation of electron vortex beams in a number of
laboratories occurred after almost 20 years had elapsed since the recognition of the physical …

Vortex-carrying matter waves, such as chiral electron beams, are of significant interest in
both applied and fundamental science. Continuous-wave electron vortex beams are …