Instabilities and waves of coherence in 1D diode laser arrays

Anatoly P. Napartovich; Boris V. Dobrov; Vladimir V. Likhanskii

doi:10.1117/12.239014

1 May 1996 Instabilities and waves of coherence in 1D diode laser arrays

Anatoly P. Napartovich, Boris V. Dobrov, Vladimir V. Likhanskii

Proceedings Volume 2693, Physics and Simulation of Optoelectronic Devices IV; (1996) https://doi.org/10.1117/12.239014
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Theory and numerical simulation of the stability and dynamic behavior of a diode laser array with nearest-neighbor coupling are discussed. The coupling coefficient is assumed to be the complex number. The linewidth enhancement factor plays the crucial role in instability development and wave field dynamics. In dependence on the values of the amplitude and phase of the coupling coefficient and of the linewidth enhancement factor the stable phase- locked operation, waves of the laser field distribution, regular oscillations, and chaotic dynamics can be observed. For different above threshold conditions as phase as amplitude chaos could be realized. The steady state and dynamic operation for a linear and ring arrays are compared. The linear stability analysis of nonlinear array modes for ring configuration is developed. Along with the wave field amplitudes the discrete Fourier spectrum was calculated. Results of simulations demonstrate that the active medium inertia plays an important role in the evolution of wave fields in the array, particularly when the characteristic variation time is on the order of the period of the relaxation oscillation for a sole laser. In the near-to-resonance conditions the increase in the intensity modulation depth took place, and the cooperative nature of oscillations became more pronounced.

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Anatoly P. Napartovich, Boris V. Dobrov, and Vladimir V. Likhanskii "Instabilities and waves of coherence in 1D diode laser arrays", Proc. SPIE 2693, Physics and Simulation of Optoelectronic Devices IV, (1 May 1996); https://doi.org/10.1117/12.239014

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KEYWORDS

Semiconductor lasers

Numerical simulations

Complex systems

Diodes

Laser optics

Chaos

Laser damage threshold

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