Results 11 to 20 of about 19,397 (259)

Orbital angular momentum: origins, behavior and applications [PDF]

open access: yes, 2011
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 every polarization vector rotates, the light has spin; if the phase structure ...
Padgett, M.J.   +5 more
core   +1 more source

Interaction of spin-orbit angular momentum in the tight focusing of structured light

open access: yesFrontiers in Physics, 2022
As an intrinsic property of light, angular momentum has always been an important research object of light field. In the past few years, the interactions between spin angular momentum and orbital angular momentum in tightly focused structured light have ...
Ji-Xiang Guo   +7 more
doaj   +1 more source

Dynamical processes of vortex electrons in intense laser field

open access: yes上海师范大学学报. 自然科学版, 2023
In this paper, the dynamic processes of strong vortex electrons with inherent orbital angular momentum in intense laser are studied. The evolution of the intrinsic orbital and spin angular momentum of a vortex electron in a chirped laser field is studied
CHEN Jiading, CHEN Yueyue
doaj   +1 more source

Determining the dimensionality of bipartite orbital-angular-momentum entanglement using multi-sector phase masks [PDF]

open access: yes, 2012
The Shannon dimensionality of orbital-angular-momentum (OAM) entanglement produced in spontaneous parametric down-conversion can be probed by using multi-sector phase analysers [1].
Padgett, M.J.   +10 more
core   +1 more source

Spin-constrained orbital-angular-momentum control in high-harmonic generation

open access: yesPhysical Review Research, 2019
The interplay between spin and orbital angular momentum in the up-conversion process allows us to control the macroscopic wave front of high harmonics by manipulating the microscopic polarizations of the driving field.
F. Kong   +10 more
doaj   +1 more source

Dual-wavelength laser with topological charge

open access: yesAIP Advances, 2013
We demonstrate the simultaneous oscillation of different photons with equal orbital angular momentum in solid-state lasers for the first time to our knowledge.
Haohai Yu   +7 more
doaj   +1 more source

Super-resolution orbital angular momentum holography

open access: yesNature Communications, 2023
The resolution of orbital angular momentum holography is limited by a fundamental sampling criterion. Here, the authors break the resolution barrier by temporal multiplexing of binary holograms and enhance the resolution and capacity by several times.
Zijian Shi   +5 more
doaj   +1 more source

Classification of magnetic vortices by angular momentum conservation

open access: yesPhysical Review Research, 2021
Superfluid vortices are quantum excitations carrying a quantized amount of orbital angular momentum in a phase where global symmetry is spontaneously broken.
Kenji Fukushima   +2 more
doaj   +1 more source

Nested SU(2) symmetry of photonic orbital angular momentum

open access: yesFrontiers in Physics, 2023
The polarization state is described by a quantum mechanical two-level system, which is known as special unitary group of degree 2 [SU(2)]. Polarization is attributed to an internal spin degree of freedom inherent to photons, while photons also possess an
Shinichi Saito
doaj   +1 more source

Rotation of electromagnetic fields and the nature of optical angular momentum [PDF]

open access: yes, 2010
The association of spin and orbital angular momenta of light with its polarization and helical phase fronts is now well established. The problems in linking this with electromagnetic theory, as expressed in Maxwell's equations, are rather less well known.
Stephen M. Barnetta B   +2 more
core   +1 more source

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