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Collective dynamics of evanescently coupled excitable lasers with saturable absorber

  • Marco LampertiEmail author
  • Auro M. Perego
Regular Article
Part of the following topical collections:
  1. Topical issue: Non-Linear and Complex Dynamics in Semiconductors and Related Materials

Abstract

We present a numerical study of the collective dynamics in a population of coupled excitable lasers with saturable absorber. At variance with previous studies where real-valued (lossy) coupling was considered, we focus here on the purely imaginary coupling (evanescent wave coupling). We show that evanescently coupled excitable lasers exhibit synchronization like the lossy coupled ones. Furthermore, we show that out-of-diagonal disorder-induced localization of excitability takes place for imaginary coupling too, but it can be frustrated by nonvanishing linewidth enhancement factor.

Graphical abstract

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Copyright information

© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Politecnico di Milano, Department of Physics and IFN-CNRLeccoItaly
  2. 2.Aston Institute of Photonic Technologies, Aston UniversityBirminghamUK

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