Results 11 to 20 of about 5,007 (212)

Minimal Focal Spot Size Measured Based on Intensity and Power Flow

open access: yesSensors, 2021
It is shown, theoretically and numerically, that the distributions of the longitudinal energy flow for tightly focused light with circular and linear polarization are the same, and that the spot has circular symmetry.
Victor V. Kotlyar   +2 more
doaj   +1 more source

A Circularly Polarized Parallel Plate Waveguide Lens-Like Multiple-Beam Linear Array Antenna for Satcom Applications

open access: yesIEEE Access, 2023
This work presents a full metal circularly-polarized lens-like antenna for Satcom applications at Ka-band. The antenna is composed of two continuous parallel plate waveguide (PPW) quasi-optical beamformers (QOBF), feeding an array of septum polarizers to
Nicola Bartolomei   +7 more
doaj   +1 more source

3D Surface Reconstruction Method for Microsamples Based on Polarization Modulation Microscopy

open access: yesIEEE Photonics Journal, 2023
A novel microscopic Shape-From-Polarization (SFP) 3D shape reconstruction method is proposed, in which degree of polarization is calculated using Polarized Bidirectional Reflectance Distribution Function (PBRDF) to overcome azimuthal ambiguity for both ...
Yuxuan Mao   +5 more
doaj   +1 more source

Unraveling the CP phase of top-Higgs coupling in associated production at the LHC

open access: yesPhysics Letters B, 2016
We study the sensitivity of top polarization observables to the CP phase ζt in the top Yukawa coupling in the process pp→thj at the 14 TeV high-luminosity run of the Large Hadron Collider (HL-LHC).
Saurabh D. Rindani   +2 more
doaj   +1 more source

How to measure the linear polarization of gluons in unpolarized proton using the heavy-quark pair leptoproduction

open access: yesPhysics Letters B, 2018
We study the azimuthal cos⁡φ and cos⁡2φ asymmetries in heavy-quark pair leptoproduction, lN→l′QQ¯X, as probes of linearly polarized gluons inside unpolarized proton, where the azimuth φ is the angle between the lepton scattering plane (l,l′) and the ...
A.V. Efremov, N.Ya. Ivanov, O.V. Teryaev
doaj   +1 more source

Observations of the Horizontally Oriented Crystalline Particles with a Scanning Polarization Lidar [PDF]

open access: yesEPJ Web of Conferences, 2020
Scanning lidar LOSA-M3 makes it possible to measure the polarization characteristics of backscattering signals from aerosol and clouds at wavelength 532 and 1064 nm.
Kokhanenko Grigorii   +7 more
doaj   +1 more source

Polarization conversion when focusing cylindrically polarized vortex beams

open access: yesScientific Reports, 2016
Currently, cylindrical beams with radial or azimuthal polarization are being used successfully for the optical manipulation of micro- and nano-particles as well as in microscopy, lithography, nonlinear optics, materials processing, and telecommunication ...
Alexey P. Porfirev   +2 more
doaj   +1 more source

NuMagSANS: a GPU‐accelerated open‐source software package for the generic computation of nuclear and magnetic small‐angle neutron scattering observables of complex systems [PDF]

open access: yesJournal of Applied Crystallography, Volume 59, Issue 3, Page 943-959, June 2026.
NuMagSANS, a GPU‐accelerated software package for the computation of nuclear and magnetic small‐angle neutron scattering cross sections and correlation functions of complex systems, is presented.We present NuMagSANS, a GPU‐accelerated software package for calculating nuclear and magnetic small‐angle neutron scattering (SANS) cross sections and ...
Michael P. Adams, Andreas Michels
wiley   +2 more sources

Singularity index and orbital angular momentum of a beam with a hybrid polarization singularity

open access: yesКомпьютерная оптика
Alongside scalar optical vortex beams, which have a topological charge (TC), a spiral wave front and carry an orbital angular momentum (OAM) that can be transferred to microparticles and rotate them along circular trajectories, polarization optical ...
V.V. Kotlyar, A.A. Kovalev, S.S. Stafeev
doaj   +1 more source

Resolving the Cu(bdc) Conundrum: Identifying Non‐Porous Packing of Prototypical Coordination‐Network Thin Films Combining Advanced Diffraction Techniques and Computational Modelling

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐processed Cu(bdc) forms prototypical MOF thin films for which a multitude of not fully satisfactory structural models have been suggested. Combining rotating grazing‐incidence diffraction and X‐ray reflectivity on two complementary samples with density‐functional theory, we first discard the previously suggested models and then identify a non ...
Narges Taghizade   +7 more
wiley   +1 more source

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