High-harmonic generation (HHG) traditionally combines~ 100 near-infrared laser photons to
generate bright, phase-matched, extreme ultraviolet beams when the emission from many …

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 …

We generate angularly isolated beams of circularly polarized extreme ultraviolet light
through the first implementation of non-collinear high harmonic generation with circularly …

We demonstrate, to our knowledge, the first bright circularly polarized high-harmonic beams
in the soft X-ray region of the electromagnetic spectrum, and use them to implement X-ray …

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 …

High-harmonic generation driven by femtosecond lasers makes it possible to capture the
fastest dynamics in molecules and materials. However, thus far, the shortest isolated …

High-harmonic generation is a universal response of matter to strong femtosecond laser
fields, coherently upconverting light to much shorter wavelengths. Optimizing the conversion …

Vortex light beams are structures of the electromagnetic field with a spiral phase ramp
around a point-phase singularity. These vortices have many applications in the optical …

We present a theoretical study of high-order harmonic generation (HHG) and propagation
driven by an infrared field carrying orbital angular momentum (OAM). Our calculations unveil …

Symmetries and conservation laws of energy, linear momentum, and angular momentum
play a central role in nonlinear optics. Recently, paraxial light fields with nontrivial topology …