Results 11 to 20 of about 68,410 (312)
Extended Beam Approximation for High-Frequency Wave Propagation
IEEE Access, 2018 The author presents an extension of the Airy beam, referred to as the Gaussian Airy beam, to simulate high-frequency wave propagation in inhomogeneous media.
Xingguo Huang
doaj +1 more source
Scientific Reports, 2021 In this paper, we study the optical trapping of anti-reflection core-shell microspheres by regular Gaussian beam and several structured beams including radially polarized Gaussian, petal, and hard-aperture-truncated circular Airy beams.
Vahid Shahabadi +2 more
doaj +1 more source
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
Results in Physics, 2019 By analyzing the construction features of a Lommel Gaussian-Schell beam and the beam wander for Gaussian beams, we derive the closed-from approximations expression for the wander of Lommel Gaussian-Schell beam through unstable stratification and weak ...
Qiyong Liang, Yun Zhu, Yixin Zhang
doaj +1 more source
The breaking of transience inertio-gravity waves in a shear flow using the Gaussian beam approximation. [PDF]
, 2014 The propagation of transient inertio-gravity waves in a shear flow is examined using the Gaussian beam formulation. This formulation assumes Gaussian wavepackets in the spectral space and uses a second-order Taylor expansion of the phase of the wave ...
Pulido, Manuel Arturo +1 more
core +1 more source
Free space optical system performance for a Gaussian beam propagating through non Kolmogorov weak turbulence [PDF]
, 2009 Atmospheric turbulence has been described for many years by Kolmogorov's power spectral density model because of its simplicity. Unfortunately several experiments have been reported recently that show Kolmogorov theory is sometimes incomplete to describe
LARRY C. ANDREWS +6 more
core +1 more source
Generation of Perfect Vortex Beams with Complete Control over the Ring Radius and Ring Width
Photonics, 2023 We have experimentally created perfect vortex beams (PVBs) by Fourier transformation of Bessel–Gaussian vortex beams, which are generated by modulating the fundamental Gaussian beam with the spiral phase plates and the axicons, respectively. Although the
Xin Tao +5 more
doaj +1 more source
Results in Physics, 2018 In this paper, the evolution dynamics of astigmatic four-petal Gaussian beams in isotropic nonlocal nonlinear media is investigated. A series of analytical expressions are derived to describe the beam evolution, the beam width, and the critical power ...
Zhen-Jun Yang +4 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
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