## Direct observation of two-dimensional self-focusing and initial stages of a wave collapse for spin waves inmagnetic films

• The first observation of self-focusing of dipolar spin waves in garnet film media is reported. In particular, we show that the quasi-stationary diffraction of a finite-aperture spin wave beam in a focusing medium leads to the concentration of the wave power in one focal point rather than along a certain line (channel). The obtained results demonstrate the wide applicability of non-linear spin wave media to study non-linear wave phenomena using an advanced combined microwave-Brillouin light scattering technique for a two-dimensional mapping of the spin wave amplitudes.

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Author: Martin Bauer, Christoph Mathieu, Serguei Demokritov, Burkhard Hillebrands, P.A. Kolodin, S. Sure, H. Dötsch, A. N. Slavin urn:nbn:de:hbz:386-kluedo-8725 Article English 1997 1997 Technische Universität Kaiserslautern 1997/01/01 Fachbereich Physik 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik Standard gemäß KLUEDO-Leitlinien vor dem 27.05.2011

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