Extreme events in forced oscillatory media in zero, one and two dimensions

Barland, S.; Brambilla, Michele; Columbo, L.; Garbin, Bruno; Gibson, C.; Giudici, M.; Gustave, F.; Masoller, Cristina; Oppo, Gian Luca; Prati, Franco; Rimoldi, Cristina; Rios, Joey; Tredicce, J. R.; Tissoni, G.; Walczak, Piotr; Yao, Aihuan; Zamora-Munt, Jordi

doi:10.1088/978-0-7503-1460-2ch1

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“…While the dynamical description illustrated in Fig. 6 is reminiscent of the results in [22], obtained by the authors for a semiconductor ring laser with optical injection and one spatial dimension along propagation, the main difference with the present case consists in the specific role played by the electric field phase [34]. In particular, in [22] high-peak events would rise from the interplay between positive and negative chiral charges, that is ±2π phase rotations, which developed in the cavity due to the simultaneous presence of three fixed points: an unstable focus in the lower branch (point C in Fig.…”

Section: Discussionmentioning

confidence: 55%

Abnormal chiral events in a semiconductor laser with coherent injection

et al. 2017

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We study experimentally and theoretically the dynamics of a spatially extended (along the propagation direction) oscillatory medium with coherent forcing. We observe abnormally high events, responsible for a different statistics of intensity and pulse height, in a regime where solitons and roll patterns are unstable. We focus on the formation of these high-peak events and their connection to the phase dynamics. Each abnormal event can be associated with a change in the slope of the phase time trace. Furthermore, the coexistence of ±2π phase rotations inside the cavity can be associated to the observation of abnormal events, similarly to recent predictions in bidimensional vortex turbulence.

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Section: Discussionmentioning

confidence: 55%