Multi-spot focal pattern formation and beam reshaping by mixing square-shaped and hexagonal vortex lattices
Stoyanov L, Maleshkov G, Zhekova M, Stefanov I, Paulus GG, Dreischuh A (2019)
Publication Type: Conference contribution
Publication year: 2019
Journal
Publisher: SPIE
Book Volume: 11332
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: Sofia, BGR
ISBN: 9781510634312
DOI: 10.1117/12.2554013
Abstract
Here we will present a reliable (experimentally and numerically proved) technique for multi-spot pattern formation in the focus of a lens (i.e. in the artificial far field). This was done using large square-shaped and/or hexagonal optical vortex (OV) lattices generated by spatial light modulators. Experimental and numerical results showing a controllable far-field beam reshaping when such lattices are generated in the Fourier plane will be discussed. Even more interesting bright structures can be obtained by combining OV lattices (of any type) with different node spacings. We show that the small-scale structure of the observed patterns 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. The orientation of the mixed far-field structures is proven to rotate by 180° when all TCs are inverted.
Involved external institutions
Friedrich-Schiller-Universität Jena
Germany (DE)
Sofia University "St. Kliment Ohridski" / Софийски университет "Св. Климент Охридски"
Bulgaria (BG)
Germany (DE)
Sofia University "St. Kliment Ohridski" / Софийски университет "Св. Климент Охридски"
Bulgaria (BG)
How to cite
APA:
Stoyanov, L., Maleshkov, G., Zhekova, M., Stefanov, I., Paulus, G.G., & Dreischuh, A. (2019). Multi-spot focal pattern formation and beam reshaping by mixing square-shaped and hexagonal vortex lattices. In Alexander A. Dreischuh, Tony Spassov, Isabelle Staude, Dragomir N. Neshev (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. Sofia, BGR: SPIE.
MLA:
Stoyanov, Lyubomir, et al. "Multi-spot focal pattern formation and beam reshaping by mixing square-shaped and hexagonal vortex lattices." Proceedings of the International Conference on Quantum, Nonlinear, and Nanophotonics 2019, ICQNN 2019, Sofia, BGR Ed. Alexander A. Dreischuh, Tony Spassov, Isabelle Staude, Dragomir N. Neshev, SPIE, 2019.
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