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 …

As they travel through space, some light beams rotate. Such light beams have angular
momentum. There are two particularly important ways in which a light beam can rotate: if …

After the discovery of zero viscosity in liquid helium, other fundamental properties of the
superfluidity phenomenon have been revealed. One of them, irrotational flow, gives rise to …

Abstract Twisted Laguerre–Gaussian lasers, with orbital angular momentum and
characterized by doughnut-shaped intensity profiles, provide a transformative set of tools …

The unique properties of optical vortex beams, in particular their spiral wavefront, have
resulted in the emergence of a wide range of unique applications for this type of laser output …

We investigate the nonlinear mixing of orbital angular momentum in type-II second-harmonic
generation with arbitrary topological charges imprinted on two orthogonally polarized …

We present a high beam quality, mid-infrared, wavelength tunable, idler-resonant optical
vortex parametric oscillator based on a single-grating MgO-doped periodically poled lithium …

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 report on the generation of an off-axis vortex with tunable non-integer orbital angular
momentum (OAM), generated using an idler-resonant mid-infrared optical parametric …

We report the first experimental characterization of the first-order continuous variable orbital
angular momentum states. Using a spatially nondegenerate optical parametric oscillator …