Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Alexey, Porfirev"'
Publikováno v:
Opto-Electronic Science, Vol 2, Iss 7, Pp 1-19 (2023)
Hall effect of light is a result of symmetry breaking in spin and/or orbital angular momentum (OAM) possessing optical system and is caused by e.g. refractive index gradient/interface between media or focusing of a spatially asymmetrical beam, simila
Externí odkaz:
https://doaj.org/article/3a2e826faa534ef9a7a7b23516e1ed12
Autor:
Alexey Porfirev, Svetlana Khonina, Nikolay Ivliev, Alexei Meshalkin, Elena Achimova, Andrew Forbes
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract It is well known that azobenzene-containing polymers (azopolymers) are sensitive to the polarization orientation of the illuminating radiation, with the resulting photoisomerization inducing material transfer at both the meso- and macroscale
Externí odkaz:
https://doaj.org/article/8a47036b591e428bbebdf3500d5df949
Publikováno v:
Компьютерная оптика, Vol 43, Iss 6, Pp 917-925 (2019)
Here, we theoretically demonstrate that if a Gaussian optical vortex is distorted by a random phase screen (diffuser) then the average intensity distribution in the focus of a spherical lens has a form of a ring with a nonzero value on the optical ax
Externí odkaz:
https://doaj.org/article/124648e1782b4f1c9dcba9739724c469
Publikováno v:
Компьютерная оптика, Vol 43, Iss 1, Pp 42-53 (2019)
We propose and study numerically and experimentally two methods for determining the orbital angular momentum (OAM) of paraxial laser beams. One method is based on registering the intensity in the Fresnel zone, numerically averaging this intensity ove
Externí odkaz:
https://doaj.org/article/5169331c9990491585e2e36e5db8af06
Publikováno v:
Компьютерная оптика, Vol 42, Iss 5, Pp 727-735 (2018)
A two-parameter family of astigmatic elliptical Gaussian (AEG) optical vortices is found, which are free space modes up to scale and rotation. We calculate the total normalized orbital angular momentum of AEG vortices, which can be integer, fractiona
Externí odkaz:
https://doaj.org/article/e456cec16fe74c5e9fa17d0524fadab8
Publikováno v:
Компьютерная оптика, Vol 42, Iss 4, Pp 550-556 (2018)
We study an optical “angular tractor” effect, at which the energy flow in the cross-section of a rotationally symmetric vortex laser beam with the positive/negative topological charge and left-/right-handed circular polarization rotates in differ
Externí odkaz:
https://doaj.org/article/448abd01fef24407a4e19f58820ee03d
Publikováno v:
Компьютерная оптика, Vol 42, Iss 1, Pp 13-21 (2018)
An explicit formula for the normalized orbital angular momentum (OAM) of an elliptical Hermite-Gaussian (HG) beam of orders (0, n) focused by a cylindrical lens is obtained. In modulus, this OAM can be both greater and smaller than n. If the cylindri
Externí odkaz:
https://doaj.org/article/ae8272f5e4d34499871077323586e194
Autor:
Alexey Porfirev, Svetlana Khonina, Nikolay Ivliev, Alexei Meshalkin, Elena Achimova, Andrew Forbes
It is well known that azobenzene-containing polymers (azopolymers) are sensitive to the polarization orientation of the illuminating radiation, with the resulting photoisomerization inducing material transfer at both the meso-and macroscale. As a res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0fc7b3682022f1835365a361b004209
https://doi.org/10.21203/rs.3.rs-1159718/v1
https://doi.org/10.21203/rs.3.rs-1159718/v1
Autor:
Alexey Porfirev
Publikováno v:
Computer Optics. 41:661-669
We conduct a comparative numerical study of the formation of closely located light spots in the focal plane of diffraction gratings and binary optical elements matched with Hermite-Gaussian modes and specular Airy beams. It is shown that while gratin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea01c576e2d3b4db349b88d8eded172f
https://doi.org/10.18287/2412-6179-2017-41-5-661-669
https://doi.org/10.18287/2412-6179-2017-41-5-661-669