The scientific effort to control the interaction between light and matter has grown
exponentially in the last 2 decades. This growth has been aided by the development of …

Recent advances in wavefront sha** have enabled complex classes of Structured Light
which carry spin and orbital angular momentum, offering new tools for light-matter …

In 1832 Hamilton predicted that a collimated light beam propagating through a biaxial crystal
parallel to one of its optical axes refracts as a slanted cone within the crystal and emerges as …

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 …

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 …

The fundamental polarization singularities of monochromatic light are normally associated
with invariance under coordinated rotations: symmetry operations that rotate the spatial …

High-order harmonic generation stands as a unique nonlinear optical up-conversion
process, mediated by a laser-driven electron recollision mechanism, which has been shown …

We investigate theoretically the generation of extreme-ultraviolet (EUV) beams carrying
fractional orbital angular momentum. To this end, we drive high-order harmonic generation …

All elementary particles in nature can be classified as fermions with half-integer spin and
bosons with integer spin. Within quantum electrodynamics (QED), even though the spin of …

Atom optics demonstrates optical phenomena with coherent matter waves, providing a
foundational connection between light and matter. Significant advances in optics have …