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Published on: August 12, 2013
Parametric generation of forward and phase-conjugated spin-wave bullets in magnetic films
A A Serga1, B Hillebrands, S O Demokritov
1Fachbereich Physik, Technische Universität Kaiserslautern, Kaiserslautern, Germany.
Abstract:
We show experimentally as well as by numerical simulation that interaction of a linear two-dimensional spin-wave packet with quasiuniform pulsed pumping leads to the formation of strongly self-focused nonlinear spin-wave bullets propagating in both forward and reversed directions. The focusing of the reversed, phase-conjugated wave bullet is stronger than that of the forward one, because not only the nonlinear four-wave self-focusing effect but also linear focusing due to two-dimensional phase conjugation contributes to the focusing of the reversed bullet.
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