Abstract
A quasi-periodic sequence of pulses in a self-oscillating ring system with a resonant amplifier and a ferromagnetic film has been generated upon three-wave parametric interaction of spin waves. It is established that the generated pulses are analogs of dissipative bright solitons, which are formed as a result of competition between amplification and loss, as well as between time dispersion and nonlinearity. To describe the mechanism of formation of these structures, we have proposed a model in the form of three parametrically coupled differential equations with amplification and a differential equation of linear oscillator. Under certain assumptions, this model has analytical solutions in time in the form of structures with a profile similar to that of bright solitons.
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Original Russian Text © S.V. Grishin, V.N. Skorokhodov, Yu.P. Sharaevskii, 2014, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 40, No. 9, pp. 32–40.
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Grishin, S.V., Skorokhodov, V.N. & Sharaevskii, Y.P. Generation of dissipative structures in self-oscillating ring systems upon parametric interaction of spin waves. Tech. Phys. Lett. 40, 378–381 (2014). https://doi.org/10.1134/S1063785014050083
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DOI: https://doi.org/10.1134/S1063785014050083