Results 51 to 60 of about 2,790,274 (339)

Interferometry with Vortices

open access: yesInternational Journal of Optics, 2012
Interference of optical beams with optical vortices is often encountered in singular optics. Since interferometry makes the phase observable by intensity measurement, it brings out a host of applications and helps to understand the optical vortex.
P. Senthilkumaran   +2 more
doaj   +1 more source

Superposition of Optical Vortex Beams for Polarization Measurement

open access: yesIEEE Photonics Journal, 2021
Polarization measurement has found applications in many fields ranging from quantum science to our daily life. However, traditional polarization measurement systems suffer from large volume and high cost.
Zhongqiang Zhang   +4 more
doaj   +1 more source

Evolution of an optical vortex with initial fractional topological charge [PDF]

open access: yesКомпьютерная оптика, 2021
In a number of theoretical (J. Opt. 6, 259 (2004)) and experimental (Opt Express 19, 5760 (2011)) works, an original fractional-TC optical vortex (with TC standing for topological charge) was shown to evolve into an integer optical vortex whose TC is ...
V.V. Kotlyar , A.G. Nalimov
doaj   +1 more source

Singular Optics: Optical Vortex Streets

open access: yesOptics and Photonics News, 2002
Peer ...
Gabriel Molina-Terriza   +2 more
openaire   +4 more sources

Divergence of optical vortex beams [PDF]

open access: yesApplied Optics, 2015
4 pages, 4 ...
Reddy, Salla Gangi   +5 more
openaire   +3 more sources

Modulation of orbital angular momentum of vortex beam based on ordered pinhole screens

open access: yesResults in Physics, 2023
Optical vortex phase beams have unique amplitudes and phase distributions, rendering them sensitive to the position and symmetry of modulating structures. This sensitivity can facilitate their applicability to optical communications.
Jinlong Zhang   +6 more
doaj   +1 more source

Vortex preserving statistical optical beams

open access: yesOptics Express, 2020
We establish a general form of the cross-spectral density of statistical sources that generate vortex preserving partially coherent beams on propagation through any linear ABCD optical system. We illustrate our results by introducing a class of partially coherent vortex beams with a closed form cross-spectral density at the source and demonstrating the
Zhiheng Xu   +5 more
openaire   +2 more sources

Integrated optical vortex beam receivers [PDF]

open access: yesOptics Express, 2016
A simple and ultra-compact integrated optical vortex beam receiver device is presented. The device is based on the coupling between the optical vortex modes and whispering gallery modes in a micro-ring resonator via embedded angular gratings, which provides the selective reception of optical vortex modes with definitive total angular momentum ...
Cicek, Kenan   +11 more
openaire   +6 more sources

Optical vortex torque measured with optically trapped microbarbells [PDF]

open access: yesApplied Optics, 2020
Optical vortex beams carry orbital angular momentum and thus exert torque on illuminated objects. A dielectric microtool–a microbarbell–is used in two-laser optical tweezers to measure the torque of a focused optical vortex. The tool was either freely rotating due to the applied torque or set into oscillations by the counteracting force. Four different
Weronika Lamperska   +3 more
openaire   +3 more sources

Generating Optical Vortex Array Laser Beams of Superimposing Hermite–Gaussian Beams with a Dual–Phase Modulation Digital Laser System

open access: yesPhotonics
This study presents an efficient and practical intra-cavity approach for selectively generating vortex array laser beams employing a dual-phase modulation digital laser system, which has not yet been completed in single-phase modulation digital laser ...
Ly Ly Nguyen Thi   +2 more
doaj   +1 more source

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