Cluster synchronization in a semiconductor laser

Autor: Dmitry Kazakov, Nikola Opačak, Florian Pilat, Yongrui Wang, Alexey Belyanin, Benedikt Schwarz, Federico Capasso
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: APL Photonics, Vol 9, Iss 2, Pp 026104-026104-6 (2024)
Druh dokumentu: article
ISSN: 2378-0967
DOI: 10.1063/5.0187078
Popis: Cluster synchronization is a general phenomenon in a network of non-locally coupled oscillators. Here, we show that cluster synchronization occurs in semiconductor lasers, where the beat notes between the pairs of adjacent longitudinal modes of the laser cavity constitute a collection of coupled phase oscillators. Non-local coupling arises from the standing-wave nature of the cavity with finite mirror reflectivities, which we can actively control. Varying the coupling, we can bring the laser into a state of cluster synchronization where the two beat note families oscillate at two distinct collective frequencies. Using a coherent beat note detection technique, we show that the beat notes within the two families are synchronized in the opposite configurations—in-phase and antiphase.
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