BACKGROUND Optical vortices provide one of the promising solutions for enhancing the
capacity of data multiplexing to meet an unprecedented growth in big data and internet traffic …

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 …

Advances in attosecond science have led to a wealth of important discoveries in atomic,
molecular, and solid-state physics and are progressively directing their footsteps toward …

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 …

Surface plasmons (SPs) are electromagnetic surface waves that propagate at the interface
between a conductor and a dielectric. Due to their unique ability to concentrate light on two …

Optical interactions are governed by both spin and angular momentum conservation laws,
which serve as a tool for controlling light–matter interactions or elucidating electron …

A spatiotemporal optical vortex (STOV) is an intrinsic optical orbital angular momentum
(OAM) structure in which the OAM vector is orthogonal to the propagation direction [Optica6 …

Microscopy with extreme ultraviolet (EUV) radiation holds promise for high-resolution
imaging with excellent material contrast, due to the short wavelength and numerous element …

INTRODUCTION Light beams carry both energy and momentum, which can exert a small
but detectable pressure on objects they illuminate. In 1992, it was realized that light can also …