Any coherent interaction of light and atoms needs to conserve energy, linear momentum and
angular momentum. What happens to an atom's angular momentum if it encounters light that …

Laguerre-Gauss beams, and more generally the orbital angular momentum of light (OAM)
provide valuable research tools for optical manipulation, processing, imaging and …

Studying the conversion between transverse light modes via four-wave mixing in a heated
rubidium vapor, we demonstrate and explain a transfer between azimuthal and radial mode …

Orbital angular momentum (OAM) light is nowadays an intriguing resource in classical and
quantum optics due to the richness of physical properties it shows in interaction with matter …

We present a general, Gaussian spatial-mode propagation formalism for describing the
generation of higher-order multi-spatial-mode beams generated during nonlinear …

We present experimental measurements showing the combination of the orbital angular
momentum (OAM) content of incident light beams in two distinct processes of degenerate …

Nonlinear processes of laser beams carrying orbital angular momentum (OAM) offer a
means to generate new wavelengths and to manipulate OAM charge numbers. We …

The parametric four-wave mixing (4WM) process responsible for the generation of coherent
blue light in alkali vapors is a self-seeded process which starts by population inversion and …

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 …

We investigate the spatial and quantum intensity correlations between the probe and Stokes
optical fields produced via four-wave mixing in a double-Λ configuration, when both …