Spin-wave frequency combs

We experimentally demonstrate the generation of spin-wave frequency combs based on the nonlinear interaction of propagating spin waves in a microstructured waveguide. By means of time and space-resolved Brillouin light scattering spectroscopy, we show that the simultaneous excitation of spin waves w...

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Bibliographic Details
Published in:arXiv.org 2022-03
Main Authors: Hula, Tobias, Schultheiss, Katrin, Trindade Goncalves, Francisco José, Körber, Lukas, Bejarano, Mauricio, Copus, Matthew, Flacke, Luis, Liensberger, Lukas, Buzdakov, Aleksandr, Kákay, Attila, Weiler, Mathias, Camley, Robert, Fassbender, Jürgen, Schultheiß, Helmut
Format: Article
Language:English
Subjects:
Light scattering
Magnons
Wave propagation
Waveguides
Online Access:Get full text
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Summary:We experimentally demonstrate the generation of spin-wave frequency combs based on the nonlinear interaction of propagating spin waves in a microstructured waveguide. By means of time and space-resolved Brillouin light scattering spectroscopy, we show that the simultaneous excitation of spin waves with different frequencies leads to a cascade of four-magnon scattering events which ultimately results in well-defined frequency combs. Their spectral weight can be tuned by the choice of amplitude and frequency of the input signals. Furthermore, we introduce a model for stimulated four-magnon scattering which describes the formation of spin-wave frequency combs in the frequency and time domain.
ISSN:2331-8422
DOI:10.48550/arxiv.2104.11491