Results 11 to 20 of about 3,148 (267)
IEEE Photonics Journal, 2018 The effects of asymmetry atmospheric eddies on the beam spreading and wander of Bessel–Gaussian (BG) beams in anisotropic turbulence are studied. Results show that turbulence anisotropy leads to the declines in both beam spreading and wander of BG
Mingjian Cheng +5 more
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IEEE Photonics Journal, 2023 This study investigates the propagation characteristics of rectangular Hermite-Gaussian array beams (RHGABs) through the oceanic and atmospheric turbulence considering ocean waves.
Hao Du +7 more
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Heliyon, 2023 The beam spreading, spectral degree of coherence and evolution behavior of the intensity profile of partially coherent Lorentz-Gaussian elliptical multi-Gaussian correlation Schell-Model beam propagating in anisotropic atmospheric turbulence are studied.
Xu Wu, Xiaolong Mao, Kenan Wu
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Subcritical turbulence spreading and avalanche birth [PDF]
Physics of Plasmas, 2019 In confined plasmas, a localized fluctuation in a marginal or weakly damped region will propagate and generate an avalanche if it exceeds a threshold. In this letter, a new model for turbulence spreading based on subcritical instability in the turbulence intensity is introduced.
R. A. Heinonen, P. H. Diamond
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When does turbulence spreading matter? [PDF]
Physics of Plasmas, 2020 Few, if any, of the many papers on turbulence spreading address the key question of how turbulence spreading actually affects the profile structure. Here, we are using a reduced model to answer that question. Turbulence spreading is most relevant near regions where the profiles support a strong intensity gradient ∇I.
Rameswar Singh, P. H. Diamond
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Frontiers in Marine Science, 2023 Ship-related energy pollution has received increasing attention but almost exclusively regarding radiated underwater noise, while the effect of ship-induced turbulence is lacking in the literature.
Amanda T. Nylund +7 more
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Physics of turbulence spreading and explicit nonlocality
Plasma Physics and Controlled Fusion, 2021 Abstract In this paper, we systematically derive a model for turbulence spreading from the basic kinetic equation. The model contains explicit nonlocal nonlinear diffusion and nonlocal growth. When the nonlocality scale parameter δ b
Qinghao Yan, P H Diamond
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Occurrence of fluctuations in the amplitude and phase of the radio signal in a turbulent atmosphere
Физика волновых процессов и радиотехнические системы, 2023 Interaction of an electromagnetic wave, as the determined wave process spreading in an atmosphere and atmospheric turbulence, as stationary stochastic wave process is considered.
Dmitriy S. Klyuev +5 more
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Origin and turbulence spreading of plasma blobs [PDF]
Physics of Plasmas, 2015 The formation of plasma blobs is studied by analyzing their trajectories in a gyrofluid simulation in the vicinity of the separatrix. Most blobs arise at the maximum radial electric field outside the separatrix. In general, blob generation is not bound to one particular radial position or instability.
Manz, P. +9 more
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Effects of Anisotropic Turbulent Ocean on Propagation of Asymmetric Bessel-Gaussian Beam
IEEE Photonics JournalAiming at the propagation of asymmetric vortex beam, we investigate the spreading and wander characteristics of asymmetric Bessel-Gaussian beam in oceanic turbulence. Based on the cross-spectral density and Wigner distribution function of beam field, the
Lin Yu +3 more
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