Results 11 to 20 of about 21,769 (310)

Λ polarization in an exact fluid dynamical model for heavy-ion collisions [PDF]

open access: yesEPJ Web of Conferences, 2016
Λ polarization is calculated in an exact analytical, rotating model based on parameters from a high resolution (3+1)D Particle-in-Cell Relativistic hydrodynamics calculation.
Xie Yilong
doaj   +2 more sources

Radial bound states in the continuum for polarization-invariant nanophotonics

open access: yes, 2022
All-dielectric nanophotonics underpinned by the physics of bound states in the continuum (BICs) have demonstrated breakthrough applications in nanoscale light manipulation, frequency conversion and optical sensing.
Juan Wang (115708)   +7 more
core   +2 more sources

High-power thin-disk lasers emitting beams with axially-symmetric polarizations

open access: yesNanophotonics, 2021
We present the intracavity generation of beams with radial polarization at an average output power of 750 W and an optical efficiency of 43% from a continuous wave thin-disk laser. Circular grating waveguide output couplers (GWOC) were used to select the
Abdou Ahmed Marwan   +12 more
doaj   +1 more source

Laguerre-Gaussian modes generated vector beam via nonlinear magneto-optical rotation

open access: yesScientific Reports, 2021
Laguerre-Gaussian (LG) beams contain a helical phase front with a doughnut-like intensity profile. We use the LG beam to introduce a rather simple method for generation of a vector beam (VB), a beam with spatially-dependent polarization in the beam cross
Mohsen Ghaderi Goran Abad   +1 more
doaj   +1 more source

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

Radial Polarization Interferometer

open access: yesFrontiers in Optics 2010/Laser Science XXVI, 2009
We propose and demonstrate a new interferometric approach in which a uniform phase difference between the arms of the interferometer manifests itself as spatially varying intensity distribution. The approach is based on interfering two orthogonal spatially varying vector fields, the radially and azimuthally polarized beams, and measuring the projection
Gilad M, Lerman, Uriel, Levy
openaire   +2 more sources

Polarization in the GG Tau Ring—Confronting Dust Self-scattering, Dust Mechanical and Magnetic Alignment, Spirals, and Dust Grain Drift

open access: yesThe Astrophysical Journal Letters, 2023
We report Atacama Large Millimeter/submillimeter Array (ALMA) polarization observations at 3 and 0.9 mm toward the GG Tau A system. In the ring, the percentage is relatively homogeneous at 3 mm, being 1.2%, while it exhibits a clear radial variation at 0.
Ya-Wen Tang   +9 more
doaj   +1 more source

Spin Hall Effect in the Paraxial Light Beams with Multiple Polarization Singularities

open access: yesMicromachines, 2023
Elements of micromachines can be driven by light, including structured light with phase and/or polarization singularities. We investigate a paraxial vectorial Gaussian beam with multiple polarization singularities residing on a circle.
Alexey A. Kovalev   +2 more
doaj   +1 more source

Polarization-selective gratingmirrors used in the generation of radial polarization [PDF]

open access: yes, 2005
International audienceTwo novel methods to control the polarization of laser radiation are presented. The discrimination between different polarization distributions isperformed with a corrugation grating in the top high-index layer of a multilayer ...
Pigeon, Florent   +11 more
core   +1 more source

The high-albedo, low polarization disk around HD 114082 that harbors a Jupiter-sized transiting planet: Constraints from VLT/SPHERE completed with TESS, Gaia, and radial velocities [PDF]

open access: yes, 2023
Aims. We present new optical and near-infrared images of the debris disk around the F-type star HD 114082 in the Scorpius-Centaurus OB association. We obtained direct imaging observations and analyzed the TESS photometric time series data of this target ...
Vigan, A.   +10 more
core   +1 more source

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