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Computer Optics, 2020, Volume 44, Issue 4, Pages 501–509
DOI: https://doi.org/10.18287/2412-6179-CO-747 (Mi co814) 		 
This article is cited in 17 scientific papers (total in 17 papers)

OPTO-IT

Digital sorting of Hermite-Gauss beams: mode spectra and topological charge of a perturbed Laguerre-Gauss beam

A. V. Volyara, E. G. Abramochkinb, Yu. A. Egorova, M. V. Bretskoa, Ya. E. Akimovaa

a Physics and Technology Institute of V.I. Vernadsky Crimean Federal University, Simferopol, Republic of Crimea, Russia
b Samara Branch of P.N. Lebedev Physical Institute of Russian Academy of Sciences, Samara, Russia
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DOI: https://doi.org/10.18287/2412-6179-CO-747
Abstract: We developed and implemented an intensity moments technique for measuring amplitude and initial phase spectra, the topological charge (TC) and orbital angular momentum (OAM) of the Laguerre-Gauss (LG) beams decomposed into the basis of Hermite-Gaussian (HG) modes. A rigorous theoretical justification is given for measuring the TC of unperturbed LG beams with different values of radial and azimuthal numbers by means of an astigmatic transformation on a cylindrical lens. We have shown that the measured amplitude and phase spectra of the HG modes make it possible to find the orbital OAM and TC, as well as digitally sorting the HG modes and then restoring the initial singular beam.
Keywords: diffraction optics, orbital angular momentum, intensity moments technique.
Funding agency Grant number
Russian Foundation for Basic Research 19-29-01233 а
The work was funded by the Russian Foundation for Basic Research under RFBR research project No. 19-29-01233.
Received: 28.04.2020
Accepted: 13.05.2020
Document Type: Article
Language: Russian
Citation: A. V. Volyar, E. G. Abramochkin, Yu. A. Egorov, M. V. Bretsko, Ya. E. Akimova, “Digital sorting of Hermite-Gauss beams: mode spectra and topological charge of a perturbed Laguerre-Gauss beam”, Computer Optics, 44:4 (2020), 501–509
Citation in format AMSBIB
\Bibitem{VolAbrEgo20}
\by A.~V.~Volyar, E.~G.~Abramochkin, Yu.~A.~Egorov, M.~V.~Bretsko, Ya.~E.~Akimova
\paper Digital sorting of Hermite-Gauss beams: mode spectra and topological charge of a perturbed Laguerre-Gauss beam
\jour Computer Optics
\yr 2020
\vol 44
\issue 4
\pages 501--509
\mathnet{http://mi.mathnet.ru/co814}
\crossref{https://doi.org/10.18287/2412-6179-CO-747}
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    • This publication is cited in the following 17 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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