Extending the scope of the self-imaging phenomenon, traditionally associated with linear optics, to the domain of magnonics, this study presents the experimental demonstration and numerical analysis of spin-wave (SW) self-imaging in an in-plane magnetized yttrium iron garnet film. We explore this phenomenon using a setup in which a plane SW passes through a diffraction grating, and the resulting interference pattern is detected using Brillouin light scattering. We have varied the frequencies of the source dynamic magnetic field to discern the influence of the anisotropic dispersion relation and the caustic effect on the analyzed phenomenon. We found that at low frequencies and diffraction fields, the caustics determine the interference pattern. However, at large distances from the grating, when the waves of high diffraction order and number of slits contribute to the interference pattern, the self-imaging phenomenon and Talbot-like patterns are formed. This methodological approach not only sheds light on the behavior of SW interference under different conditions but also enhances our understanding of the SW self-imaging process in both isotropic and anisotropic media.
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6 May 2024
Research Article|
May 09 2024
Spin-wave self-imaging: Experimental and numerical demonstration of caustic and Talbot-like diffraction patterns
Special Collection:
Magnonics
Uladzislau Makartsou
;
Uladzislau Makartsou
a)
(Conceptualization, Data curation, Formal analysis, Methodology, Software, Validation, Visualization, Writing – original draft)
1
Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University
, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
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Mateusz Gołębiewski
;
Mateusz Gołębiewski
a)
(Conceptualization, Methodology, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University
, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
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Urszula Guzowska
;
Urszula Guzowska
(Data curation, Validation, Visualization, Writing – review & editing)
2
Department of Physics of Magnetism, Faculty of Physics, University of Białystok
, Konstantego Ciołkowskiego 1L, 15-245 Białystok, Poland
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Alexander Stognij
;
Alexander Stognij
b)
(Data curation, Resources)
3
Scientific-Practical Materials Research Center at National Academy of Sciences of Belarus
, Pietrusia Broŭki 19, 220072 Minsk, Belarus
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Ryszard Gieniusz
;
Ryszard Gieniusz
(Conceptualization, Data curation, Writing – review & editing)
2
Department of Physics of Magnetism, Faculty of Physics, University of Białystok
, Konstantego Ciołkowskiego 1L, 15-245 Białystok, Poland
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Maciej Krawczyk
Maciej Krawczyk
(Conceptualization, Formal analysis, Funding acquisition, Methodology, Supervision, Writing – original draft, Writing – review & editing)
1
Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University
, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
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b)
Deceased.
Appl. Phys. Lett. 124, 192406 (2024)
Article history
Received:
December 30 2023
Accepted:
April 29 2024
Citation
Uladzislau Makartsou, Mateusz Gołębiewski, Urszula Guzowska, Alexander Stognij, Ryszard Gieniusz, Maciej Krawczyk; Spin-wave self-imaging: Experimental and numerical demonstration of caustic and Talbot-like diffraction patterns. Appl. Phys. Lett. 6 May 2024; 124 (19): 192406. https://doi.org/10.1063/5.0195099
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