Results 71 to 80 of about 1,828,977 (180)

Experimental generation of scalar and vector vortex Pearcey–Gauss beams

JPhys Photonics
In this manuscript, we put forward two new types of structured light beams, the vortex Pearcey–Gauss (VPeG) beam, with a homogeneous polarisation distribution, and the vector VPeG (VVPeG) beam, with a non-homogeneous polarisation distribution. The latter
Valeria Rodríguez-Fajardo, Gabriela Flores-Cova, Carmelo Rosales-Guzmán, Benjamin Perez-Garcia   +3 more
doaj   +1 more source

Vector Vortex Beams: Theory, Generation, and Detection of Laguerre–Gaussian and Bessel–Gaussian Types

Photonics
A vector vortex beam (VVB) combines the phase singularity of a vortex beam (VB) with the anisotropic polarization of a vector beam, enabling the transmission of complex optical information and offering broad application prospects in optical sensing, high-
Xin Yan, Xin Tao, Minghao Guo, Chunliang Zhou, Jingzhao Chen, Guanyu Shang, Peng Li   +6 more
doaj   +1 more source

Resonance of vector vortex beams in a triangular optical cavity

Scientific Reports
Abstract We experimentally demonstrate resonance of first-order vector vortex beams (VVB) with a triangular optical cavity. We also show that, due to their symmetry properties, the VVBs commonly known as radial and azimuthal beams do not resonate at the same cavity length, which could be explored to use the triangular resonator as a ...
L. M. Rodrigues, L. Marques Fagundes, D. C. Salles, G. H. dos Santos, J. M. Kondo, P. H. Souto Ribeiro, A. Z. Khoury, R. Medeiros de Araújo   +7 more
openaire   +4 more sources

Vector beams encoded by diverse orthogonal polarization states and their generation based on metasurfaces

New Journal of Physics, 2023
Vector beams with spatially varying polarization states have wide application prospects. Convenient and feasible generation of compact vector beams become important for the applications in integrated optics and optical communication.
Zhiyuan Yue, Peiyao Lu, Jilian Xu, Zhong Li, Shuyun Teng   +4 more
doaj   +1 more source

All-dielectric Jones matrix metasurfaces for generating perfect vector vortex beams in polarization-resolved surface detection

Measurement: Sensors
Vector vortex beams (VVBs), which simultaneously carry spin angular momentum (SAM) and orbital angular momentum (OAM), exhibit spatially varying polarization distributions dependent on the azimuthal angle.
Zihan Zhang, Zhengtai Ma, Yiyang Xie
doaj   +1 more source

Energy backflow in a focal spot of the cylindrical vector beam [PDF]

Компьютерная оптика, 2018
Using Richards-Wolf formulae it is shown that a tightly focused azimuthally-radially polarized m-th order laser beam with an arbitrary apodization function produces a reverse energy flow in the focal plane (m=2).
Sergey Stafeev, Anton Nalimov, Victor Kotlyar   +2 more
doaj   +1 more source

Vortex and anti-vortex compositions of exact elegant Laguerre–Gaussian vector beams [PDF]

Applied Physics B, 2014
Reformulation of conventional beam definitions into their bidirectional versions and use of Hertz potentials make beam fields exact vector solutions to Maxwell's equations. This procedure is applied to higher-order elegant Laguerre-Gaussian beams of TM and TE polarization.
openaire   +2 more sources

Analysis of Hybrid Vector Beams Generated with a Detuned Q-Plate

Applied Sciences, 2020
We use a tunable commercial liquid-crystal device tuned to a quarter-wave retardance to study the generation and dynamics of different types of hybrid vector beams.
Julio César Quiceno-Moreno, David Marco, María del Mar Sánchez-López, Efraín Solarte, Ignacio Moreno   +4 more
doaj   +1 more source

Intensity correlations in scattered vector vortex beams for determining the topological charge

Results in Physics
We propose a novel scheme for measuring the topological charge (TC) of the vector vortex beam (VVB) using polarization speckles size of the 2D auto-correlation function of scattered vector vortices.
Patnala Vanitha, Do-Kyeong Ko
doaj   +1 more source

Examining the relationship between wind turbine blade performance and tip vortex behaviour in the wake [PDF]

, 1997
This paper details the results of laboratory tests on a model wind turbine rotor at the University of Edinburgh and examines tip vortex behaviour which questions the assumptions of current rotor performance prediction codes.
Whale, J.
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