Phase-resolved optical characterization of nanoscale spin waves

We study theoretically and experimentally the process of Brillouin light scattering on an array of silicon disks on a thin Permalloy layer. We show that phase-resolved Brillouin light scattering microscopy performed on an array of weakly interacting dielectric nanoresonators can detect nanoscale wav...

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Bibliographic Details
Published inarXiv.org
Main Authors Wojewoda, Ondřej, Hrtoň, Martin, Dhankhar, Meena, Krčma, Jakub, Davídková, Kristýna, Klíma, Jan, Holobrádek, Jakub, Ligmajer, Filip, Šikola, Tomáš, Urbánek, Michal
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 09.03.2023
Subjects
Arrays
Dielectric strength
Disks
Ferrous alloys
Light scattering
Magnetic alloys
Magnons
Optical properties
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Summary:We study theoretically and experimentally the process of Brillouin light scattering on an array of silicon disks on a thin Permalloy layer. We show that phase-resolved Brillouin light scattering microscopy performed on an array of weakly interacting dielectric nanoresonators can detect nanoscale waves and measure their dispersion. In our experiment, we were able to map the evolution of the phase of the spin wave with a wavelength of 209 nm with a precision of 6 nm. These results demonstrate the feasibility of all-optical phase-resolved characterization of nanoscale spin waves.
ISSN:2331-8422