Coherence and synchronization in diode-laser arrays with delayed global coupling

Abstract

The dynamics of a semiconductor-laser array whose individual elements are coupled in a global way through an external mirror is numerically analysed. A coherent in-phase solution is seen to be preferred by the system at intermediate values of the feedback coupling strength. At low values of this parameter, a strong amplification of the spontaneous emission noise is observed. A tendency towards chaos synchronization is also observed at large values of the feedback strength.

8 pages, LaTeX, 6 PS figures, to appear in International Journal of Bifurcation and Chaos

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