Zobrazeno 1 - 10
of 38
pro vyhledávání: '"A. M. Telegin"'
Publikováno v:
Applied Sciences, Vol 14, Iss 14, p 6305 (2024)
It is shown in this work that, with strong focusing of a beam with optical vortex and circular polarization, three energy flows take place in the focal plane: direct longitudinal, reverse longitudinal and azimuthal transverse flows. Calculations are
Externí odkaz:
https://doaj.org/article/960c2339be2241c1a74a01cd59f3f576
Publikováno v:
Photonics, Vol 11, Iss 5, p 430 (2024)
We analyze the tight focusing of a generalized Poincaré beam using a Richards–Wolf formalism. Conventional Poincaré beams are superpositions of two Laguerre–Gaussian beams with orthogonal polarization, while the generalized Poincaré beams are
Externí odkaz:
https://doaj.org/article/bb50434b81f84d50b9d22b7024d5561b
Autor:
Victor V. Kotlyar, Alexey A. Kovalev, Alexey M. Telegin, Elena S. Kozlova, Sergey S. Stafeev, Alexander Kireev, Kai Guo, Zhongyi Guo
Publikováno v:
Applied Sciences, Vol 14, Iss 9, p 3926 (2024)
In this work, using a Richards-Wolf formalism, we derive explicit analytical relationships to describe vectors of the major and minor axes of polarization ellipses centered in the focal plane when focusing a cylindrical vector beam of integer order n
Externí odkaz:
https://doaj.org/article/48fed45add034d038cc347350c310b24
Publikováno v:
Photonics, Vol 11, Iss 4, p 330 (2024)
In this paper, tight focusing of a superposition of a vortex laser beam with topological charge n with linear polarization and a plane wave with the same linear polarization directed along the horizontal axis is considered. Using the Richards–Wolf
Externí odkaz:
https://doaj.org/article/200ec203cc5041288266530be6508334
Publikováno v:
Photonics, Vol 10, Iss 11, p 1247 (2023)
The Richards–Wolf formulas not only adequately describe a light field at a tight focus, but also make it possible to describe a light field immediately behind an ideal spherical lens, that is, on a converging spherical wave front. Knowing all proje
Externí odkaz:
https://doaj.org/article/c0a0bc6dc6f44956b9ba2889a1f7b789
Publikováno v:
Photonics, Vol 10, Iss 10, p 1093 (2023)
We have shown how the spin Hall effect is formed in a tight focus for two light fields with initial linear polarization. We have demonstrated that an even number of local subwavelength regions appear in which the sign of the longitudinal projection o
Externí odkaz:
https://doaj.org/article/1a00f2d61c1d46e1b887f102d87465a2
Autor:
Victor V. Kotlyar, Sergey S. Stafeev, Vladislav D. Zaitsev, Alexey M. Telegin, Elena S. Kozlova
Publikováno v:
Applied Sciences, Vol 13, Iss 14, p 8361 (2023)
In the framework of the Richards–Wolf formalism, the spin–orbit conversion upon tight focusing of an optical vortex with circular polarization is studied. We obtain exact formulas which show what part of the total (averaged over the beam cross-se
Externí odkaz:
https://doaj.org/article/516983379bf141bda2f4e2cef86018a2
Publikováno v:
Photonics, Vol 10, Iss 7, p 719 (2023)
Using the Richards–Wolf formalism, we obtain explicit analytical expressions for the optical helicity density at the tight focus of four different light beams: a linearly polarized optical vortex, an optical vortex with right-handed circular polari
Externí odkaz:
https://doaj.org/article/c2e560c99e3f4c7b9d96ebae2d15165f
Publikováno v:
Micromachines, Vol 14, Iss 4, p 788 (2023)
The tight focusing of an optical vortex with an integer topological charge (TC) and linear polarization was considered. We showed that the longitudinal components of the spin angular momentum (SAM) (it was equal to zero) and orbital angular momentum
Externí odkaz:
https://doaj.org/article/7dce68a4b0c9404596b8b5d39159e4cb
Publikováno v:
Photonics, Vol 10, Iss 2, p 160 (2023)
Based on the Richards-Wolf (RW) formalism, we obtain two different exact expressions for the angular momentum (AM) density of light in the focus of an optical vortex with a topological charge n and right circular polarization. One expression for the
Externí odkaz:
https://doaj.org/article/00d34505e8c64fa4bc846a6327f960ee