Spin-wave frequency combs
Mesoscale and Nanoscale Physics
2023-08-31 v2 Optics
Abstract
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.
Cite
@article{arxiv.2104.11491,
title = {Spin-wave frequency combs},
author = {Tobias Hula and Katrin Schultheiss and Francisco José Trindade Goncalves and Lukas Körber and Mauricio Bejarano and Matthew Copus and Luis Flacke and Lukas Liensberger and Aleksandr Buzdakov and Attila Kákay and Mathias Weiler and Robert Camley and Jürgen Fassbender and Helmut Schultheiß},
journal= {arXiv preprint arXiv:2104.11491},
year = {2023}
}
Comments
5 pages, 4 figures