Abstract:
Multisoliton complexes have been generated in an active ring resonator with an L-shaped magnonic microwaveguide and a saturated amplifier. It has been shown that an irregular microwaveguide simultaneously supports both the propagation of magnetostatic spin waves with different (normal and anomalous) dispersion and competition between three- and four-wave spin-wave interactions. Generated multisoliton complexes consist of quasiperiodic sequences of two dark parametric pulses containing “soliton trains” consisting of three dark ultrashort four-wave envelope solitons. It has been found that quasiperiodic sequences of multisoliton complexes generated by the active ring resonator with a regular magnonic microwaveguide consist of one dark parametric pulse, which also contains three dark four-wave solitons. However, in contrast to the preceding case, four-wave solitons, having a longer duration, do not form soliton trains inside a dark parametric pulse.
Citation:
A. S. Bir, S. V. Grishin, “Generation of dark multisoliton complexes in a magnonic ring resonator with dispersion management and competing nonlinear spin-wave interactions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 110:5 (2019), 348–353; JETP Letters, 110:5 (2019), 364–369
A. V. Kozhevnikov, G. M. Dudko, Y. V. Khivintsev, V. K. Sakharov, S. L. Vysotskii, Y. V. Nikulin, E. S. Pavlov, A. G. Khitun, Y. A. Filimonov, Izv. Vyss. Uchebn. Zaved.-Prikl. Nelineynaya Din., 28:2 (2020), 168–185