Results 41 to 50 of about 1,176,513 (293)

Beam shaping using Gaussian beam modes [PDF]

, 2010
A beam shaping method is presented where a diffractive optical element (DOE) is designed by optimizing the complex mode coefficient weights of a set of Gaussian beam modes.
O'Sullivan, Créidhe, Lavelle, John
core   +2 more sources

Incoherent beam combination of higher-order Gaussian beam in atmospheric turbulence

Results in Optics
In this article, an incoherent beam combination of higher-order Gaussian beams through atmospheric turbulence is studied. An analytical expression of the combined intensity and spot size of higher-order Gaussian beams such as Hermite Gaussian (HG ...
Mukesh Kumar, Azeemuddin Syed, Arpit Khandelwal, Jagannath Nayak   +3 more
doaj   +1 more source

Spin to orbital angular momentum transfer in frequency up-conversion

Nanophotonics, 2021
We demonstrate the spin to orbital angular momentum transfer in frequency upconversion with structured light beams. A vector vortex is coupled to a circularly polarized Gaussian beam in noncollinear second harmonic generation under type-II phase match ...
Pinheiro da Silva Braian, Buono Wagner T., Pereira Leonardo J., Tasca Daniel S., Dechoum Kaled, Khoury Antonio Z.   +5 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Gaussian process model based predictive control [PDF]

, 2004
Gaussian process models provide a probabilistic non-parametric modelling approach for black-box identification of non-linear dynamic systems. The Gaussian processes can highlight areas of the input space where prediction quality is poor, due to the lack ...
Rasmussen, C.E., Kocijan, J., Girard, A., Murray-Smith, R.   +3 more
core   +4 more sources

Self-accelerating and self-healing of Ince-Gaussian-like beams

Results in Physics, 2022
The propagation of a new type of Ince-Gaussian-like beam along a predesigned parabolic trajectory in the free space is investigated numerically and experimentally.
Haobin Yang, You Wu, Zejia Lin, Junjie Jiang, Haiqi Huang, Danlin Xu, Zhenwu Mo, Ziyu Wang, Yidan Sun, Lingling Shui, Dongmei Deng   +10 more
doaj   +1 more source

Spectral anomalies by superposition of polychromatic Gaussian beam and Gaussian vortex beam

Optics Express, 2014
We study the spectral property of a composite field superposed by a polychromatic Gaussian beam and a polychromatic Gaussian beam with an embedded mth-order vortex. It is shown that, in the overall spectral shift distribution, there exist m small areas where sharp spectral anomaly takes place, similarly and respectively, which are related with the ...
Panfeng, Ding, Jixiong, Pu, Junhong, Weng, Pin, Han   +3 more
openaire   +2 more sources

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Spin-orbit interaction in quasi-monochromatic singular beams

Компьютерная оптика
It is shown that the magnitude of the spin-orbit coupling is the energy efficiency of energy transfer between orthogonally polarized beam components. The energy efficiency changes as the Gaussian beam propagates through the anisotropic crystal.
Y.A. Egorov, A.F. Rubass
doaj   +1 more source

Transverse beam tails due to inelastic scattering

Physical Review Special Topics. Accelerators and Beams, 2000
Non-Gaussian beam tails producing low beam lifetimes and background to the experimental detectors can be a serious performance limitation in colliding beam facilities. We describe simulations and measurements of non-Gaussian beam tails performed on the e^
H. Burkhardt, I. Reichel, G. Roy
doaj   +1 more source