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Parametric interaction of a propagating dipolar spin wave envelope soliton (carrier frequency ₒ, duration ₒ, and velocity ₒ) with electromagnetic pumping (frequency 0ex{0ex}=0ex{0ex}2ₒ), localized in a spatial region of width L, has been observed in magnetic films for the first time. The necessary frequency bandwidth of interaction was guaranteed by choosing L<|ₒ|ₒ. The interaction results in soliton amplification if the soliton arrives at the pumping region not more than 1 after the pumping has been switched on. Otherwise, the soliton is scattered by short-exchange-dominated spin waves of frequency ₒ parametrically excited by the localized pumping.
Bagada et al. (Mon,) studied this question.