Results 11 to 20 of about 54,944 (266)

Focus shaping using cylindrical vector beams

open access: yesOptics Express, 2002
We report a focus shaping technique using generalized cylindrical vector beams. A generalized cylindrical vector beam can be decomposed into radially polarized and azimuthally polarized components. Such a generalized cylindrical beam can be generated from a radially polarized or an azimuthally polarized light using a two-half-wave-plate polarization ...
Qiwen, Zhan, James, Leger
openaire   +4 more sources

Focusing of high numerical aperture cylindrical-vector beams

open access: yesOptics Express, 2000
Cylindrical-vector beams are of increasing recent interest for their role in novel laser resonators and their applications to electron acceleration and scanning microscopy. In this paper, we calculate cylindrical-vector fields, near the focal region of an aplanatic lens, and briefly discuss some applications.
K, Youngworth, T, Brown
openaire   +4 more sources

Cylindrical vector beams for rapid polarization-dependent measurements in atomic systems

open access: yesOptics Express, 2011
We demonstrate the use of cylindrical vector beams - beams with spatially varying polarization - for detecting and preparing the spin of a warm rubidium vapor in a spatially dependent manner.
Arimondo   +26 more
core   +3 more sources

Integral transformation solution of free-space cylindrical vector beams and prediction of modified-Bessel-Gaussian vector beams

open access: yesOptics Letters, 2007
A unified description of the free-space cylindrical vector beams is presented, which is an integral transformation solution to the vector Helmholtz equation and the transversality condition.
Ashkin   +20 more
core   +3 more sources

An interference scheme for generating inhomogeneously polarized laser radiation using a spatial light modulator [PDF]

open access: yesКомпьютерная оптика, 2020
An optical system for converting linearly polarized laser beams into cylindrical vector beams is developed and experimentally investigated. The scheme is based on the coherent addition of mode beams using a Mach-Zehnder interferometer. The simplicity and
Sergei Karpeev   +2 more
doaj   +1 more source

Singularities in cylindrical vector beams [PDF]

open access: yesJournal of Modern Optics, 2015
Cylindrical vector beams with azimuthal and radial polarization distributions are studied for singularities. It is shown experimentally that these beams have screw dislocation as well as edge dislocation at the same time. The relation between phase and polarization of light beam is the key to understand this fact.
Manish Verma   +5 more
openaire   +1 more source

Spin-Hall Effect of Cylindrical Vector Vortex Beams

open access: yesPhotonics, 2023
Spin-Hall effect (SHE) of light is one of the main manifestations of the spin-orbit interaction of photons, and has been extensively studied for optical beams with homogeneous polarization.
Xuyao Zhang   +4 more
doaj   +1 more source

Polar POLICRYPS diffractive structures generate cylindrical vector beams [PDF]

open access: yesApplied Physics Letters, 2015
Local shaping of the polarization state of a light beam is appealing for a number of applications. This can be achieved by employing devices containing birefringent materials. In this article, we present one such enables converting a uniformly circularly polarized beam into a cylindrical vector beam (CVB).
Alj D   +4 more
openaire   +6 more sources

Discrete Cylindrical Vector Beam Generation from an Array of Optical Fibers [PDF]

open access: yes, 2009
A novel method is presented for the beam shaping of far field intensity distributions of coherently combined fiber arrays. The fibers are arranged uniformly on the perimeter of a circle, and the linearly polarized beams of equal shape are superimposed ...
Armstrong   +34 more
core   +1 more source

Effect of the azimuthal gradient of the thermal load on the depolarization of cylindrical vector beams propagating in a side non-uniformly pumped isotropic medium

open access: yesResults in Physics, 2019
The theoretical and experimental investigations of the depolarization of cylindrical vector beams when they propagate into a side non-uniformly pumped isotropic laser medium.
Ce Yang   +4 more
doaj   +1 more source

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