Results 31 to 40 of about 15,035 (306)
Results in Physics, 2022 In order to reduce the loss of communication system based on orbital angular momentum (OAM), an Er3+-doped photonic crystal fiber (PCF) amplifier which can support amplification for 30 OAM modes is proposed.
Lijuan Zhao +3 more
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Thermal lens effect with light’s orbital angular momentum
Optics Express, 2022 Thermal lens effect has been well developed and exploited for decades by using the Gaussian intensity distribution of a laser beam. In this paper, a new thermal lens effect by using a laser beam with Orbital Angular Momentum (OAM) is proposed. We find that the dynamic process for the formation of the OAM-thermal lens has reda rapid change towards the ...
Yuan Li, Wuhong Zhang, Lixiang Chen
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Atoms in a spin dependent optical potential: ground state topology and magnetization
New Journal of Physics, 2022 We investigate a Bose–Einstein condensate of F = 1 ^87 Rb atoms in a 2D spin-dependent optical lattice generated by intersecting laser beams with a superposition of polarizations.
Piotr Szulim +4 more
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Large-scale integrated reconfigurable orbital angular momentum mode multiplexer
, 2020 Recent experiments in orbital angular momentum multiplexing have demonstrated its potential for improving the link capacity in optical interconnection networks. Meanwhile, compact photonic integrated orbital angular momentum (de-)multiplexing devices are
Ning Zhang (23771) +10 more
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Sorting full angular momentum states with Pancharatnam-Berry metasurfaces based on spiral transformation [PDF]
, 2020 Full angular momentum states constitute a complete and higher state space of a photon, which are significant not only for fundamental study of light but also for practical applications utilizing cylindrical optics such as optical fibers.
Wen, Yuanhui +4 more
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Quantum oscillations of the j=3/2 Fermi surface in the topological semimetal YPtBi
Physical Review Research, 2022 The bismuth-based half-Heusler materials host a nontrivial topological band structure, unconventional superconductivity, and large spin-orbit coupling in a system with very low electron density.
Hyunsoo Kim +5 more
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On the reversibility of the Meissner effect and the angular momentum puzzle [PDF]
Annals of Physics, 2016 It is generally believed that the laws of thermodynamics govern superconductivity as an equilibrium state of matter. Here we point out that within the conventional BCS-London description of the normal-superconductor transition in the presence of a magnetic field, the transition cannot be reversible, in contradiction with the thermodynamic description ...
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Energy, momentum, and angular momentum transfer between electrons and nuclei
, 2022 The recently developed exact factorization approach condenses all electronic effects on the nuclear subsystem into scalar and vector potentials that appear in an effective time dependent Schrödinger equation.
Li, C. +3 more
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ANGULAR MOMENTUM EVOULUTION OF INTERACTING BINARY STAR SYSTEMS [PDF]
, 2005 The orbital angular momentum distribution of interacting binary star systems and the important role of mass loss and the Alfven radius in effective spin down and orbital shrinkage (and thus in the orbital angular momentum evolution) of these systems are ...
Demircan, Osman
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Causality and universality in low-energy scattering
EPJ Web of Conferences, 2010 We discuss the generalization of Wigner’s causality bounds and Bethe’s integral formula for the effective range parameter to arbitrary dimension and arbitrary angular momentum.
Hammer H.-W., Lee D.
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