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 …

Structured light is derived from the ability to tailor light, usually referring to the spatial control
of its amplitude, phase, and polarization. Although a venerable topic that dates back to the …

Structured light recently highlighted the higher-dimensional control with many tailored
degrees of freedom (DoFs) such as amplitude, wavelength, polarization, and orbital angular …

Vector beams, non-separable in spatial mode and polarisation, have emerged as enabling
tools in many diverse applications, from communication to imaging. This applicability has …

Metasurfaces have found broad applicability in free-space optics, while its potential to tailor
guided waves remains barely explored. By synergizing the Jones matrix model with …

In light of pending capacity crunch in information era, orbital-angular-momenta-carrying
vortex beams are gaining traction thanks to enlarged transmission capability. However, high …

Structured-light lasers are highly topical due to not only their ability to tailor customized
distribution of intensity, phase, orbital angular momentum (OAM), and other optical …

Non-Hermitian exceptional points (EPs) represent a special type of degeneracy where not
only the eigenvalues coalesce, but also the eigenstates tend to collapse on each other …

We report on optical vortex lattices (OVL) beams with phase-singularity arrays from a large-
aperture diode-pumped Yb: CALGO laser. A distinct transverse-mode-locking (TML) effect is …

The generation of optical vortex beams with user-configurable topological charge and
spatial profile is a topic of intense research due to the numerous potential applications for …