Results 41 to 50 of about 7,439 (300)

Evolution Behavior of Mixed Higher Order Optical Vortex–Edge Dislocations Propagating Through Atmospheric Turbulence

open access: yesIEEE Photonics Journal, 2018
We model the effect of the off-axis distance of edge dislocation on the transmission of mixed higher order optical vortex–edge dislocations in atmospheric turbulence.
Penghui Gao   +4 more
doaj   +1 more source

Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]

open access: yes, 2009
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C., Courtial, J.
core   +1 more source

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

Optical helicity, chirality, and spin of 3D-structured Laguerre-Gaussian optical vortices [PDF]

open access: yes, 2022
Optical fields possess energy, momentum, and helicity. For the plane waves and paraxial fields of standard, classical optics, the spin angular momentum and optical helicity are well understood, both being proportional to the degree of circular ...
Forbes, Kayn   +3 more
core   +1 more source

All-fiber SWAP-CNOT gate for optical vortices

open access: yesКомпьютерная оптика, 2021
We study the propagation of optical vortices in a system which consists of a tandem of a multi-helical and twisted anisotropic fiber. We show that at certain resonance regimes of the optical fibers such a system allows one to control sign flipping of the
E.V. Barshak   +5 more
doaj   +1 more source

Orbital angular momentum: origins, behavior and applications [PDF]

open access: yes, 2011
As they travel through space, some light beams rotate. Such light beams have angular momentum. There are two particularly important ways in which a light beam can rotate: if every polarization vector rotates, the light has spin; if the phase structure ...
Padgett, M.J.   +5 more
core   +1 more source

Generation of optical vortices imitating water vortices

open access: yes, 2022
In optics, we can generate vortex beams using specific methods such as spiral phase plates or computer generated holograms. While, in nature, it is worth noting that water can produce vortices by a circularly symmetrical hole. So, if a light beam can generate vortex when it is diffracted by an aperture? Here, we show that the light field in the Fresnel
Yao, Jun   +6 more
openaire   +2 more sources

Quadrupole absorption rate for atoms in circularly-polarized optical vortices

open access: yesResults in Physics, 2021
Twisted light beams, or optical vortices, have been used to drive the circular motion of microscopic particles in optical tweezers and have been shown to generate vortices in quantum gases.
Smail Bougouffa
doaj   +1 more source

Optical vortices and vortex solitons [PDF]

open access: yes, 2005
Optical vortices are phase singularities nested in electromagnetic waves that constitute a fascinating source of phenomena in the physics of light and display deep similarities to their close relatives, quantized vortices in superfluids and Bose-Einstein condensates.
Desyatnikov, Anton S   +2 more
openaire   +2 more sources

Vorticity and the birth of optical vortices

open access: yes, 2019
We exploit the vorticity, familiar from fluid mechanics and the theory of superfluids, as a tool to track the birth and subsequent development of optical vortices at a spiral phase plate.
Potoček, Václav   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy