Zobrazeno 1 - 10
of 761
pro vyhledávání: '"Volyar, A."'
Publikováno v:
Photonics, Vol 11, Iss 11, p 1095 (2024)
An analogy with the polarization Stokes parameters and symplectic methods of the second-order intensity moment matrix allowed us to develop a simple technique for measuring the orbital Stokes parameters followed by mapping the structured beam states
Externí odkaz:
https://doaj.org/article/0451e2fab198427081bc14ae0d548d7d
We have developed and implemented a new technique of parallel information transmission through a multimode graded-index fiber in real time based on the approach of intensity moments. To do this, it was necessary to measure the spectrum of the mode am
Externí odkaz:
http://arxiv.org/abs/2007.08828
We found that small perturbations of the optical vortex core in the Laguerre-Gaussian (LG) beams generate a fine structure of the Hermite-Gauss (HG) mode spectrum. Such perturbations can be easily simulated by weak variations of amplitudes and phases
Externí odkaz:
http://arxiv.org/abs/2007.04741
Akademický článek
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Publikováno v:
Компьютерная оптика, Vol 47, Iss 3, Pp 350-360 (2023)
The article investigated conditions for shaping astigmatic-invariant structured Laguerre-Gaussian (LG) beams in the case of simple astigmatism. We have theoretically and experimentally confirmed that the conditions of astigmatic invariance are that t
Externí odkaz:
https://doaj.org/article/fb0af2b84d68415da5f840ec7e914e55
Digital sorting perturbed laguerre-gaussian beams by radial numbers via high order intensity moments
Thus, the results of our studies lie in developing and implementing the basic principles of digital sorting the Laguerre-Gauss modes by radial numbers both for a non-degenerate and a degenerate state of a vortex beam subject to perturbations in the f
Externí odkaz:
http://arxiv.org/abs/1912.03658
We theoretically and experimentally investigated transformations of vortex beams subjected to sector perturbations in the form of hard-edged aperture. The transformations of the vortex spectra, the orbital angular momentum, and the informational entr
Externí odkaz:
http://arxiv.org/abs/1909.06651
Publikováno v:
Компьютерная оптика, Vol 46, Iss 6, Pp 853-863 (2022)
In general, a standard Laguerre–Gauss (LG) beam, whose state is given by two quantum numbers (n, 𝓁): the radial number n and the azimuthal number 𝓁 (or the topological charge (TС) of the vortex carried by the LG beam), is unstable with respe
Externí odkaz:
https://doaj.org/article/9203d686958046a9b9c13c2be0a57d01
Akademický článek
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Publikováno v:
Photonics, Vol 11, Iss 3, p 191 (2024)
We studied theoretically and experimentally the propagation of structured Laguerre–Gaussian (sLG) beams through an optical system with general astigmatism based on symplectic ABCD transforms involving geometry of the second-order intensity moments
Externí odkaz:
https://doaj.org/article/24bf7b42329c4fb9b9470c8665ae07bf