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Turbulent chimeras in large semiconductor laser arrays.

J Shena^1,2,3, J Hizanidis¹, V Kovanis²

¹Crete Center for Quantum Complexity and Nanotechnology, Department of Physics, University of Crete, 71003 Heraklion, Greece.

Scientific Reports

|February 7, 2017

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Researchers discovered novel chimera states in semiconductor laser arrays. These arrays exhibit complex behavior with both synchronized and unsynchronized emitters, a first for quantum well gain media.

Area of Science:

Physics
Nonlinear Dynamics
Quantum Optics

Background:

Semiconductor laser arrays have been studied for decades, focusing on coherence.
Complex collective behaviors in such systems remain an active research area.

Purpose of the Study:

To investigate the existence and characteristics of chimera states in large semiconductor diode laser arrays.
To identify key parameters influencing chimera state formation and dynamics.

Main Methods:

Experimental and theoretical investigation of diode laser arrays with nearest-neighbor interactions.
Utilizing a figure of merit to classify and quantify chimera states.
Analysis of parameters including evanescent coupling strength and optical frequency detuning.

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Last Updated: Mar 7, 2026

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Main Results:

Demonstrated the first observation of chimera states in large diode laser arrays with quantum well gain media.
Identified evanescent coupling strength and frequency detuning as critical parameters.
Classified the observed chimera states as turbulent based on irregular temporal dynamics.

Conclusions:

Chimera states are achievable in large-scale semiconductor laser arrays.
The findings offer new insights into complex dynamics in coupled nonlinear systems.
This work opens avenues for controlling and utilizing complex collective behaviors in laser arrays.