Observation of indirect parallel pumping of magneto-elastic modes in layered YIG/GGG structures

• Published in: Solid state communications Vol. 141; no. 1; pp. 33 - 37
• Main Authors: Ordóñez-Romero, C.L., Kolokoltsev, O.V., Grimalsky, V., Qureshi, N., Ortega, R.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2007; Elsevier
• Subjects: A. Ferrite film; A. Yttrium iron garnet; Condensed matter: electronic structure, electrical, magnetic, and optical properties; D. Magneto-elastic waves; D. Magneto-optics; Exact sciences and technology; Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures); Magnetic properties and materials; Magnetic properties of surface, thin films and multilayers; Magnetomechanical and magnetoelectric effects, magnetostriction; Physics; 43.35.Rw; 75.70.-i; D. Magneto-optics; 72.55.+s; 75.80.+q; 78.20.Ls; A. Ferrite film; D. Magneto-elastic waves; A. Yttrium iron garnet; Shear; Microwave radiation; Light scattering; Optical pumping; Elastic waves; Selection rules; YIG; Magnetoelastic effects; Non linear effect; Iron oxides; Yttrium oxides
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/j.ssc.2006.09.039

In this work we report new experimental results on nonlinear excitation of magnetoelastic (ME) modes in layered YIG/GGG waveguide structures at GHz frequencies, obtained by a guided-wave light scattering technique. It is shown that the fundamental spin-dipole wave (SDW) mode induces a secondary microwave field at double frequency that can efficiently excite shear elastic modes of the structure. The distinctive feature of a mechanism for ME coupling proposed is that it is free from the selection rules and provides continuous excitation of elastic modes within a wide frequency range by means of the standard microstripe line excitation system.