Results 41 to 50 of about 145,179 (287)

Photoionization with orbital angular momentum beams

Optics Express, 2010
Intense laser ionization expands Einstein's photoelectric effect rules giving a wealth of phenomena widely studied over the last decades. In all cases, so far, photons were assumed to carry one unit of angular momentum. However it is now clear that photons can possess extra angular momentum, the orbital angular momentum (OAM), related to their spatial ...
Picón, A., Mompart, J., de Aldana, J. R. Vázquez, Plaja, L., Calvo, G. F., Roso, L.   +5 more
openaire   +3 more sources

Angular Momentum Decomposition for an Electron

, 2008
We calculate the orbital angular momentum of the `quark' in the scalar diquark model as well as that of the electron in QED (to order $\alpha$). We compare the orbital angular momentum obtained from the Jaffe-Manohar decomposition to that obtained from ...
D. Brommel, D. B. Renner, Hikmat BC, Matthias Burkardt   +3 more
core   +1 more source

Dimensionality-enhanced mid-infrared light vortex detection based on multilayer graphene

Light: Science & Applications
Recent conceptual demonstrations of direct photocurrent readout of light vortices have enabled the development of light orbital angular momentum-sensitive focal plane arrays and on-chip integration of orbital angular momentum detection.
Dehong Yang, Jiawei Lai, Zipu Fan, Shiyu Wang, Kainan Chang, Lili Meng, Jinluo Cheng, Dong Sun   +7 more
doaj   +1 more source

Acoustic orbital angular momentum transfer to matter by chiral scattering

New Journal of Physics, 2015
We report on orbital angular momentum exchange between sound and matter mediated by a non-dissipative chiral scattering process. An experimental demonstration is made possible by irradiating a three-dimensional printed, spiral-shaped chiral object with ...
Régis Wunenburger, Juan Israel Vazquez Lozano, Etienne Brasselet   +2 more
doaj   +1 more source

Orbital angular momentum of the spiral beams [PDF]

Компьютерная оптика, 2019
At first sight, any rotation generates some angular momentum (it is true for a solid body). But these characteristics (rotation and orbital angular momentum) are rather different for optics and mechanics.
Vladimir Volostnikov
doaj   +1 more source

Spin-orbit coupling and the conservation of angular momentum

, 2012
In nonrelativistic quantum mechanics, the total (i.e. orbital plus spin) angular momentum of a charged particle with spin that moves in a Coulomb plus spin-orbit-coupling potential is conserved.
Al-Jaber S M, Barut A O, Berestetskii V B, Grassberger P, Hnizdo V, Jackson J D, Landau L D, Lush D C, Lush D C, Panofsky W K H, Schrödinger E, Skagerstam B S, Ternov I M, Thomas L H, V Hnizdo   +14 more
core   +1 more source

A plasma solenoid driven by an Orbital Angular Momentum laser beam [PDF]

, 2018
A tens of Tesla quasi-static axial magnetic field can be produced in the interaction of a short intense laser beam carrying an Orbital Angular Momentum with an underdense plasma.
Korneev, Ph., Nuter, R., Thiele, I., Tikhonchuk, V.   +3 more
core   +2 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Tunable Orbital Angular Momentum Radiation from Angular-Momentum-Biased Microcavities

Physical Review Letters, 2018
Lasers and light emitters do not typically radiate fields with orbital angular momentum (OAM). Here we show that a suitable scheme of spatiotemporal modulation of a microring cavity laser can impart a synthetic angular momentum, resulting in beams with well-defined OAM. The phenomenon relies on a traveling wave modulation of the refractive index of the
Adam, Mock, Dimitrios, Sounas, Andrea, Alù   +2 more
openaire   +3 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source