Results 1 to 10 of about 374,046 (194)

Mutually guided light and particle beam propagation [PDF]

open access: yesScientific Reports, 2022
The polarizability of atoms and molecules gives rise to optical forces that trap particles and a refractive index that guides light beams, potentially leading to a self-guided laser and particle beam propagation.
Andres M. Castillo   +3 more
doaj   +2 more sources

Development of a beam propagation method to simulate the point spread function degradation in scattering media. [PDF]

open access: yesOpt Lett, 2019
Scattering is one of the main issues that limit the imaging depth in deep tissue optical imaging. To characterize the role of scattering, we have developed a forward model based on the beam propagation method and established the link between the ...
Cheng X   +6 more
europepmc   +2 more sources

Beam Propagation Factor of a Cosh-Airy Beam

open access: yesApplied Sciences, 2019
Based on the second-order moments, the analytical expression of the beam propagation factor of a cosh-Airy beam has been derived. The beam propagation factor was determined by the decay factor and the cosh parameter.
Yimin Zhou, Yiqing Xu, Guoquan Zhou
doaj   +3 more sources

New method for nonparaxial beam propagation [PDF]

open access: yesJournal of the Optical Society of America A, 2004
A new method for solving the wave equation is presented that is nonparaxial and can be applied to wide-angle beam propagation. It shows very good stability characteristics in the sense that relatively larger step sizes can be taken.
Anurag Sharma   +19 more
core   +5 more sources

Bessel beam propagation using radial beam propagation method at different propagation scales

open access: yesOptics Express
This paper is devoted to studying the Bessel beam propagation in cylindrical coordinates using the Hankel transform beam propagation method (HT-BPM) and their behavior in different scenarios in the microscale and meter scale of propagation distances.
Chia-Yuan Chang, Yu-Lung Lo
exaly   +3 more sources

Experimental investigation of LG beam propagating in actual atmospheric turbulence

open access: yesResults in Physics, 2022
The propagation properties of Laguerre-Gaussian (LG) beam are investigated experimentally in an actual turbulent atmosphere, including beam propagation, phase change, and singularity perturbation.
Yan Zhang   +3 more
doaj   +1 more source

Analytical Study on the Steady-State Thermal Blooming of Incoherent Combining Beam

open access: yesAtmosphere, 2022
The incoherent combined beam of lasers has many important applications due to its simple technology and excellent expansibility. Thermal blooming is one factor that will seriously affect the propagation of the combined beam in the atmosphere.
Ke Zhang, Quan Sun, Xiuxiang Chu
doaj   +1 more source

Parametric characterization of vortex cosine-hyperbolic-Gaussian beams

open access: yesResults in Optics, 2021
Based on the moments method, the analytical expressions for the beam propagation factor, the kurtosis parameter and the orbital angular momentum density distribution of a vortex cosh-Gaussian beam (vChGB) propagating in free space are derived.
Zoubir Hricha   +3 more
doaj   +1 more source

Comparison between the Propagation Properties of Bessel–Gauss and Generalized Laguerre–Gauss Beams

open access: yesPhotonics, 2023
The connections between Laguerre–Gauss and Bessel–Gauss beams, and between Hermite–Gauss and cosine-Gauss beams are investigated. We review different asymptotic expressions for generalized Laguerre and Hermite polynomials of large radial/transverse order.
Colin J. R. Sheppard, Miguel A. Porras
doaj   +1 more source

Average Intensity of SLVGB for Slant Path Propagation in Atmospheric Turbulent

open access: yesResults in Optics, 2021
The physical meaning of propagation characteristics of an (SLVGB) Super Lorentz vortex Gauss beam in a turbulent atmosphere is studied and analyzed. To use the method of Huygens-Fresnel integral. Likewise, to apply the ITU-R turbulence structure constant
Hussein Thary Khamees
doaj   +1 more source

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