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Bistability by induced waveguiding in coupled semiconductor lasers

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4 Author(s)
Heffernan, D. ; Dublin Institute of Technology, Dublin, Ireland and Dublin Institute of Advanced Studies, Dublin, Ireland ; McInerney, J. ; Reekie, L. ; Bradley, D.J.

Recently, McInerney, Reekie, and Bradley observed bistability in twin diode GaAs/GaAlAs injection lasers in an external cavity when both diodes were above threshold. We show that this bistability may be explained by a form of self-focusing which is produced by induced waveguiding in the wide stripe lasers. A detailed analysis is performed on a standard model of these diodes in an external cavity. We have found very good agreement between theory and experiment.

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Quantum Electronics, IEEE Journal of  (Volume:21 ,  Issue: 9 )