Results 31 to 40 of about 1,176,513 (293)
Photonics, 2023 We investigate the interactions of in-phase Airy beams modulated by a fundamental Gaussian beam and fourth-order diffraction in Kerr nonlinear media. Directly numerical simulations show that normal (anomalous) fourth-order diffraction and an in-phase ...
Wenwen Zhao, Lijuan Ge, Ming Shen
doaj +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
All-optical mode conversion via spatially multimode four-wave mixing
New Journal of Physics, 2016 We experimentally demonstrate the conversion of a Gaussian beam to an approximate Bessel–Gauss mode by making use of a non-collinear four-wave mixing (4WM) process in hot atomic vapor.
Onur Danaci +2 more
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Heliyon, 2023 The beam spreading and evolution behavior of a partially coherent, Hermite-cosine-Gaussian (HcosG) rectangular multi-Gaussian correlated Schell-model beam propagating in oceanic turbulence is studied. Analytical expressions for the cross-spectral density
Xu Wu, Chuang Wang, Yuhui Kong, Kenan Wu
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Effect of terahertz irradiation on DNA damage repair in living cells
FEBS Open Bio, EarlyView.We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno +3 more
wiley +1 more source
Single kick approximations for beam-beam deflections
Physical Review Special Topics. Accelerators and Beams, 1999 A six-dimensional symplectic beam-beam interaction map using finite discrete slices of a strong beam is extended to infinitesimal slices. The new map is calculated under the assumption of a longitudinal Gaussian distribution with approximations.
Takahiko Koyama
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Advanced Engineering Materials, EarlyView.Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source
Nonparaxial Propagation of Vectorial Elliptical Gaussian Beams
International Journal of Optics, 2016 Based on the vectorial Rayleigh-Sommerfeld diffraction integral formulae, analytical expressions for a vectorial elliptical Gaussian beam’s nonparaxial propagating in free space are derived and used to investigate target beam’s propagation properties. As
Wang Xun +3 more
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Mode Gaussian beam tracing [PDF]
Computer Physics Communications, 2016 8 pages, 2 figures.
M. Yu. Trofimov +2 more
openaire +2 more sources
The PRIMA Thesaurus for Materials Science and Engineering
Advanced Engineering Materials, EarlyView.The PRIMA Thesaurus is a structured vocabulary designed to improve how materials science data is described and shared. Developed with input from multiple experts, it enables clear documentation of research workflows, data exchange, and reuse across platforms.
Rossella Aversa +8 more
wiley +1 more source