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Orbital Angular Momentum Microlaser [PDF]
Conference on Lasers and Electro-Optics, 2016 Microlasers with a twist Structured light, in the form of helical wavefronts, provides an additional degree of freedom to encode information for optical communications. Creating light beams with the desired amount of optical angular momentum, or twist, has usually been achieved with bulk optic devices. Miao et al.
Pei, Miao +6 more
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More on Difference between Angular Momentum and Pseudo-Angular Momentum
, 2023 We extend the discussion on the difference between angular momentum and pseudo-angular momentum in field theory. We show that the often quoted expressions in [Phys.Rev.B 103, L100409 (2021)] only apply to a non-linear system, and derive the correct rotation symmetry and the corresponding angular momentum for a linear elastic system governed by Navier ...
Dai, Qi +3 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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Transverse spin sum rule of the proton
Physics Letters B, 2020 The transversely-polarized state of a proton with arbitrary momentum is not an eigenstate of transverse angular momentum operator. The latter does not commute with the QCD Hamiltonian.
Xiangdong Ji, Feng Yuan
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Spin current driven by ultrafast magnetization of FeRh
Nature Communications, 2023 Laser-induced ultrafast demagnetization is an important phenomenon that probes arguably the ultimate limits of the angular momentum dynamics in solid. Unfortunately, many aspects of the dynamics remain unclear except that the demagnetization transfers ...
Kyuhwe Kang +7 more
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Interaction of spin-orbit angular momentum in the tight focusing of structured light
Frontiers 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
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Parallel axis theorem for free-space electron wavefunctions
New Journal of Physics, 2015 We consider the orbital angular momentum of a free electron vortex moving in a uniform magnetic field. We identify three contributions to this angular momentum: the canonical orbital angular momentum associated with the vortex, the angular momentum of ...
Colin R Greenshields +2 more
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Applied Sciences, 2019 It is well-known now that angular momentum carried by elementary particles can be categorized as spin angular momentum (SAM) and orbital angular momentum (OAM) [...]
Yang Yue +4 more
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International Journal of Instrumentation and Control Systems, 2018 An angular momentum spinner includes two or more rotating arms loaded with an adjustable sliding block for each arm and laid symmetrically about a rotating center. Each sliding block is controlled to move along the corresponding rotating arm. Such a spinner can display the conservation of angular momentum vividly and intuitively, and can also serve as ...
Yizong He, Lijuan You
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