Tunable generation of vortex beams holds relevance in various fields, including
communications and sensing. In this paper, we demonstrate the feasibility of nonlinear spin …

Preparation, control, and measurement of optical vortices are increasingly important, as they
play essential roles in both fundamental science and optical technology applications. Spatial …

In this work we study the evolution of an optical vortex undergoing self-phase modulation
inside a nonlinear Kerr medium. The intensity-dependent phase evolution couples the …

We explore a degenerate four-wave mixing process induced by transversely structured light
beams in a rubidium vapor cell. In particular, we consider the nonlinear interaction driven by …

Stimulated-emission tomography (SET) is an excellent tool for characterizing the process of
spontaneous parametric down conversion (SPDC), which is commonly used to create pairs …

Nonlinear optics of structured light carrying orbital angular momentum (OAM) has recently
led to intriguing fundamental physical effects in light–matter interactions and advanced …

Developing a quantum light source that carries more than one bit per photon is pivotal for
expanding quantum information applications. Characterizing a high-dimensional multiple …

We propose a scheme that transfers the helical phase information of the orbital angular
momentum (OAM) light—via a graphene system—to the generated four-wave mixing (FWM) …

Ince–Gaussian (IG) beams, as eigenfunctions of the paraxial wave equation in elliptical
coordinates, are attracting increasing interest owing to their propagation-invariant and full …