Vortex states of photons, electrons, and other particles are non-plane-wave solutions of the
corresponding wave equation with helicoidal wave fronts. These states possess an intrinsic …

Major advances in X-ray sources including the development of circularly polarized and
orbital angular momentum pulses make it possible to probe matter chirality at …

Abstract Magneto-optical (MO) effects, viz. magnetically induced changes in light intensity or
polarization upon reflection from or transmission through a magnetic sample, were …

Since the second half of the 20th century, ideas to develop methods for the formation of
optical vortices (OVs) or OV beams–regions of circular motion of energy flow in an …

Light's capacity to carry angular momentum is integral to our knowledge of physics and
ability to probe matter. In addition to spin, photons can occupy free-space orbital angular …

We report on the experimental evidence of magnetic helicoidal dichroism, observed in the
interaction of an extreme ultraviolet vortex beam carrying orbital angular momentum with a …

Recent developments of high harmonic generation (HHG) have enabled the production of
structured extreme-ultraviolet (EUV) ultrafast laser beams with orbital angular momentum …

Electromagnetic waves possessing orbital angular momentum (OAM) are powerful tools for
applications in optical communications, quantum technologies, and optical tweezers …

Light beams with helical phase-fronts are known to carry orbital angular momentum (OAM)
and provide an additional degree of freedom to beams of coherent light. While OAM beams …

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 …