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Controllable beam reshaping by mixing square-shaped and hexagonal optical vortex lattices.
Stoyanov, L; Maleshkov, G; Zhekova, M; Stefanov, I; Paulus, G G; Dreischuh, A.
Afiliación
  • Stoyanov L; Department of Quantum Electronics, Faculty of Physics, Sofia University, 5, J. Bourchier Blvd., Sofia, 1164, Bulgaria.
  • Maleshkov G; Department of Quantum Electronics, Faculty of Physics, Sofia University, 5, J. Bourchier Blvd., Sofia, 1164, Bulgaria.
  • Zhekova M; Department of Quantum Electronics, Faculty of Physics, Sofia University, 5, J. Bourchier Blvd., Sofia, 1164, Bulgaria.
  • Stefanov I; Department of Quantum Electronics, Faculty of Physics, Sofia University, 5, J. Bourchier Blvd., Sofia, 1164, Bulgaria.
  • Paulus GG; Institute of Optics and Quantum Electronics, Friedrich Schiller University, Max-Wien-Platz 1, D-07743, Jena, Germany.
  • Dreischuh A; Helmholtz Institute Jena, Helmholtzweg 4, D-07743, Jena, Germany.
Sci Rep ; 9(1): 2128, 2019 Feb 14.
Article en En | MEDLINE | ID: mdl-30765792
In the present work we show experimentally and by numerical calculations a substantial far-field beam reshaping by mixing square-shaped and hexagonal optical vortex (OV) lattices composed of vortices with alternatively changing topological charges. We show that the small-scale structure of the observed pattern results from the OV lattice with the larger array node spacing, whereas the large-scale structure stems from the OV lattice with the smaller array node spacing. In addition, we demonstrate that it is possible to host an OV, a one-dimensional, or a quasi-two-dimensional singular beam in each of the bright beams of the generated focal patterns. The detailed experimental data at different square-to-hexagonal vortex array node spacings shows that this quantity could be used as a control parameter for generating the desired focused structure. The experimental data are in excellent agreement with the numerical simulations.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2019 Tipo del documento: Article País de afiliación: Bulgaria Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2019 Tipo del documento: Article País de afiliación: Bulgaria Pais de publicación: Reino Unido