Results 21 to 30 of about 1,176,513 (293)
Multipole expansion of Bessel and Gaussian beams for Mie scattering calculations [PDF]
, 2009 Multipole expansions of Bessel and Gaussian beams, suitable for use in Mie scattering calculations, are derived. These results allow Mie scattering calculations to be carried out considerably faster than existing methods, something that is of particular ...
Love, G.D +3 more
core +1 more source
Applied Sciences, 2020 The expressions of wave structure function (WSF) and long-exposure modulation transfer function (MTF) for laser beam propagation through non-Kolmogorov turbulence were derived in our previous work. In this paper, based on anisotropic maritime atmospheric
Bing Guan +3 more
doaj +1 more source
Sinusoidal Gaussian optical vortex as a superposition of two hypergeometric beams
Компьютерная оптика, 2022 We analyze the propagation of hypergeometric beams with a parabolic initial wavefront in a homogeneous medium. While hypergeomentric beams have a central amplitude singularity in the initial plane and are of infinite energy, superposition of two such ...
V.V. Kotlyar, A.A. Kovalev
doaj +1 more source
Orbital angular momentum of an astigmatic Hermite-Gaussian beam [PDF]
Компьютерная оптика, 2018 An explicit formula for the normalized orbital angular momentum (OAM) of an elliptical Hermite-Gaussian (HG) beam of orders (0, n) focused by a cylindrical lens is obtained. In modulus, this OAM can be both greater and smaller than n.
Victor Kotlyar +2 more
doaj +1 more source
Designing a self-accelerating beam by Wigner transform
Results in Physics, 2022 Based on the Wigner transform, a method for designing a self-accelerating beam is proposed. As an example, a beam traveling along an arbitrary path has been studied by modulating the phase of an optical field.
Wei Wen +4 more
doaj +1 more source
Results in Physics, 2019 We propose a theoretical model for a rotating elliptical Gaussian optical coherence lattice (REGOCL) in oceanic turbulence. It is found that every sub-beam in the REGOCL maintains a controllable rotation within a certain distance, which plays a ...
Feng Ye +4 more
doaj +1 more source
IEEE Photonics Journal, 2020 By developing the complex phase perturbation for vortex pulsed beams in asymmetric oceanic turbulence and the spatiotemporal orthogonal basis for Lommel-Gaussian pulsed beam, we establish the received probability model of orbital angular momentum (OAM ...
Ye Li, Yixin Zhang, Yun Zhu
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Photonics, 2023 We investigate the evolution properties of a partially coherent Laguerre–Gaussian vector vortex (LGVV) beam through inhomogeneous atmospheric turbulence. Analytical formulae for the elements of a cross-spectral density matrix of a partially coherent LGVV
Kai Huang, Yonggen Xu, Yuqiang Li
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Journal of Manufacturing and Materials Processing, 2023 The commonly used Gaussian intensity distribution during the laser-based processing of metals can negatively affect melt pool stability, which might lead to defects such as porosity, hot cracking, or poor surface quality.
Florian Nahr +3 more
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Radial phased-locked Laguerre-Gaussian correlated schell-model beam array
Heliyon, 2022 A new beam array called radial phased-locked Laguerre-Gaussian correlated Schell-model (LGCSM) beam array is presented, the beamlet of this beam array is partially coherent beam with Laguerre Gaussian-Schell model correlation.
Yaotian Yan +5 more
doaj +1 more source