Results 21 to 30 of about 9,264 (254)
Spin angular momentum of Gaussian beams with several polarization singularities
Компьютерная оптика, 2023 We study a paraxial vector Gaussian beam with several polarization singularities located on a circle. Such a beam is superposition of a cylindrically polarized Laguerre-Gaussian beam and a linearly polarized Gaussian beam.
A.A. Kovalev, V.V. Kotlyar
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Spin and orbital angular momentum of coherent photons in a waveguide
Frontiers in Physics, 2023 Spin angular momentum of a photon corresponds to a polarisation degree of freedom of lights, and such that various polarisation properties are coming from macroscopic manifestation of quantum-mechanical properties of lights.
Shinichi Saito
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Conversion of a beam carrying fractionnal angular momentum in High-Harmonics Generation [PDF]
EPJ Web of Conferences, 2023 Exotic light fields combining non-trivial spin and angular momentum may not be eigenstates of either the spin or orbital angular momenta operators. For these fields, it is relevant to define a Generalized Angular Momentum operator of which they are ...
Guer Matthieu +7 more
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Pseudogauge freedom and the SO(3) algebra of spin operators
Physics Letters B, 2023 The energy-momentum and spin tensors for a given theory can be replaced by alternative expressions that obey the same conservation laws for the energy, linear momentum, as well as angular momentum but, however, differ by the local redistribution of such ...
Sourav Dey +3 more
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Quantum field theory for spin operator of the photon
Physical Review Research, 2022 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 the Dirac particle is well defined, there exist open questions on the ...
Li-Ping Yang +2 more
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Spin Hall Effect of Double-Index Cylindrical Vector Beams in a Tight Focus
Micromachines, 2023 We investigate the spin angular momentum (SAM) of double-index cylindrical vector beams in tight focus. Such a set of beams is a generalization of the conventional cylindrical vector beams since the polarization order is different for the different ...
Alexey A. Kovalev, Victor V. Kotlyar
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Compton effect in terms of spintronic
Results in Physics, 2016 Compton effect with spin effect is studied. Although the incoming wave has been taken into account in the current loop model the final result is the same as before.
Ziya Saglam +2 more
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Physics Letters B, 2018 The expression for the total angular momentum carried by a laser optical vortex beam, splits, in the paraxial approximation, into two terms which seem to represent orbital and spin angular momentum respectively.
Elliot Leader
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Photonics, 2023 We theoretically investigated the effect of a new type of twisting phase on the polarization dynamics and spin–orbital angular momentum conversion of tightly focused scalar and vector beams.
Shu-Dan Wu +2 more
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Mapping the transverse spin sum rule in position space
Physics Letters BWe discuss in detail the relativistic spatial distribution of transverse angular momentum, including both orbital and intrinsic spin contributions. Using the quantum phase-space formalism, we begin with the definition of the three-dimensional spatial ...
Cédric Lorcé +3 more
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