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Collective dynamics of evanescently coupled excitable lasers with saturable absorber

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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.

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Authors and Affiliations

  1. Politecnico di Milano, Department of Physics and IFN-CNR, Via G. Previati 1/C, 23900, Lecco, Italy

    Marco Lamperti

  2. Aston Institute of Photonic Technologies, Aston University, Aston Street, Birmingham, B4 7ET, UK

    Auro M. Perego

Authors
  1. Marco Lamperti
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  2. Auro M. Perego
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Correspondence to Marco Lamperti.

Additional information

Contribution to the Topical Issue “Non-Linear and Complex Dynamics in Semiconductors and Related Materials”, edited by Kathy Lüdge.

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Lamperti, M., Perego, A.M. Collective dynamics of evanescently coupled excitable lasers with saturable absorber. Eur. Phys. J. B 92, 117 (2019). https://doi.org/10.1140/epjb/e2019-90634-8

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  • DOI: https://doi.org/10.1140/epjb/e2019-90634-8

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