Direct detection of magnetostatic wave excitations in magnetostatic wave device structures by Brillouin light scattering
- 1 October 1985
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 47 (7) , 759-761
- https://doi.org/10.1063/1.96030
Abstract
The technique of Brillouin light scattering has been used to detect magnetostatic wave (MSW) excitations in MSW microwave device structures. The present results are for a signal‐to‐noise enhancer consisting of a microstrip transmission line in contact with a yttrium iron garnet film with the applied magnetic field parallel to the microstrip line. At low input microwave power levels, the MSW spectra at 4 GHz consisted of surface excitations with wave numbers from about 80 to 470 cm−1, with the propagation direction perpendicular to the microstrip line. At high power levels, parametric half‐frequency MSW excitations were observed, accompanied by a decrease in the scattering of the surface MSW excitations at the pump frequency.Keywords
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