Results 21 to 30 of about 3,312 (180)

Focusing fractional-order cylindrical vector beams

open access: yesКомпьютерная оптика, 2021
By numerically simulating the sharp focusing of fractional-order vector beams (0≤m≤1, with azimuthal polarization at m=1 and linear polarization at m=0), it is shown that the shape of the intensity distribution in the focal spot changes from elliptical ...
S.S. Stafeev, V.D. Zaitsev
doaj   +2 more sources

Optical trapping and optical binding using cylindrical vector beams

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
We report on the use of cylindrical vector beams for optical manipulation of micron and sub-micron sized particles using the methods of a single-beam gradient force trap (optical tweezers) and an evanescent-field surface trap (optical binding).
S. E. Skelton   +5 more
doaj   +2 more sources

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
exaly   +3 more sources

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   +2 more sources

Optical Communication Performance of Cylindrical Vector Partially Coherent Laguerre–Gaussian Beams in Atmospheric Turbulence

open access: yesPhotonics
The optical communication performance of cylindrical vector partially coherent Laguerre–Gaussian (PCLG) beams in different atmospheric turbulence models are investigated.
Meng Liu   +6 more
doaj   +2 more sources

Sagnac Interferometer Based Generation of Controllable Cylindrical Vector Beams [PDF]

open access: yesInternational Journal of Optics, 2016
We report on a novel experimental geometry to generate cylindrical vector beams in a very robust manner. Continuous control of beams’ properties is obtained using an optically addressable spatial light modulator incorporated into a Sagnac interferometer.
Cristian Acevedo   +3 more
doaj   +2 more sources

Structured beam-driven multipolar mode control in nanoparticles [PDF]

open access: yesNanophotonics
Due to their unique tight focusing properties, structured light beams, such as cylindrical vector beams, offer unique opportunities for tailoring light–matter interaction at the nanoscale.
Fallah Asma, Otte Eileen
doaj   +2 more sources

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   +7 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.
Thomas G Brown
exaly   +3 more sources

Monolayer Chiral Metasurface for Generation of Arbitrary Cylindrical Vector Beams

open access: yesPhotonics
The cylindrical vector beam (CVB) has been widely studied and applied in recent years. However, many CVB generation methods suffer from complex systems, and large-size devices are required. Here, we propose a monolayer chiral metasurface composed of spin-
Qian Chen   +6 more
doaj   +2 more sources

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