Results 1 to 10 of about 8,052 (102)

Optical Force Effects of Rayleigh Particles by Cylindrical Vector Beams [PDF]

open access: yesNanomaterials
High-order cylindrical vector beams possess flexible spatial polarization and exhibit new effects and phenomena that can expand the functionality and enhance the capability of optical systems.
Yuting Zhao   +4 more
doaj   +2 more sources

Studies of B s 2 ∗ ( 5840 ) 0 and B s 1 ( 5830 ) 0 mesons including the observation of the B s 2 ∗ ( 5840 ) 0 → B 0 K S 0 decay in proton-proton collisions at s = 8 TeV. [PDF]

open access: yesEur Phys J C Part Fields, 2018
Measurements of Bs2∗(5840)0 and Bs1(5830)0 mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of , collected with the CMS detector at the LHC at a centre-of-mass energy of 8TeV .
Sirunyan AM   +2304 more
europepmc   +3 more sources

Measuring of Transverse Energy Flows in a Focus of an Aluminum Lens

open access: yesPhotonics, 2022
In this study, we theoretically and experimentally investigate the propagation of a second-order cylindrical vector beam through an aluminum lens which forms a tight focus at the distance of the wavelength. Simulation by the finite-difference time-domain
Elena Kozlova   +5 more
doaj   +1 more source

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

open access: yesКомпьютерная 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   +2 more
doaj   +1 more source

Vortex energy flow in the tight focus of a non-vortex field with circular polarization [PDF]

open access: yesКомпьютерная оптика, 2020
Using Richards-Wolf formulas, we show that an axisymmetric circularly polarized vortex-free field can be focused into a sharp subwavelength focal spot, around which there is a region where the light energy flow propagates along a spiral. This effect can
Victor Kotlyar   +2 more
doaj   +1 more source

Longitudinal component of the Poynting vector of a tightly focused optical vortex with circular polarization [PDF]

open access: yesКомпьютерная оптика, 2018
We numerically investigated the focusing of optical vortices with the wavelength λ = 532 nm and right-hand circular polarization by using a diffractive lens with the numerical aperture NA = 0.95.
Sergey Stafeev, Anton Nalimov
doaj   +1 more source

The near-axis backflow of energy in a tightly focused optical vortex with circular polarization [PDF]

open access: yesКомпьютерная оптика, 2018
Using the Richards-Wolf formulae for a diffractive lens, we show that in the focal plane of a sharply focused left-hand circularly polarized optical vortex with the topological charge 2 there is an on-axis backflow of energy (as testified by the negative
Victor Kotlyar   +2 more
doaj   +1 more source

Formation of an elongated region of energy backflow using ring apertures [PDF]

open access: yesКомпьютерная оптика, 2019
In this paper, we have investigated the focusing of a second-order cylindrical vector beam by using a high numerical aperture (NA) lens limited by a ring aperture using the Richards-Wolf formulae.
Sergey Stafeev, Victor Kotlyar
doaj   +1 more source

Toroidal polarization vortices in tightly focused beams with singularity

open access: yesКомпьютерная оптика, 2020
In this paper, we numerically investigated tight focusing of cylindrical vector beams of the sec-ond order using Richards-Wolf formulae. It was shown that intensity rings where the Poynting vector was equal to zero appeared not only in the focal plane ...
S.S. Stafeev, V.V. Kotlyar
doaj   +1 more source

Formation of the reverse flow of energy in a sharp focus [PDF]

open access: yesКомпьютерная оптика, 2019
It was theoretically shown that in the interference pattern of four plane waves with specially selected directions of linear polarization it is formed a reverse flow of energy.
Victor Kotlyar   +3 more
doaj   +1 more source

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