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 …

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

We generated a 2.3-cycle, 5.9-fs, 56-μJ ultrashort optical-vortex pulse (ranging from∼ 650
to∼ 950 nm) in few-cycle regime, by optical parametric amplification. It was performed even …

We report on the direct generation of passively mode-locked vortex lasers in the visible
spectral region, for the first time to the best of our knowledge, using a Pr: LiYF_4 (Pr: YLF) …

Advances in manipulating the structure of optical beams enable the study of interaction
between structured light and low-dimensional semiconductor systems. We explore the …

It is shown that the electron coupling to photons in field-dressed nanostructures can result in
the ground electron-photon state with a nonzero electric current. Since the current is …

We consider circular currents driven by voltage bias in molecular wires with loop
substructures studied within simple tight-binding models. Previous studies of this issue have …

While mesoscopic conducting loops are sensitive to external magnetic fields, as is
pronouncedly exemplified by observations of the Aharonov-Bohm (AB) effect in such …

The coherent dynamics of the exciton center-of-mass motion in bulk GaN are studied using
degenerate four-wave-mixing (FWM) spectroscopy with Laguerre-Gaussian (LG) mode …

Twisted light is light carrying orbital angular momentum. The profile of such a beam is a
ringlike structure with a node at the beam axis, where a phase singularity exists. Due to the …