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Mode selection and stability of a semiconductor laser with weak optical feedback

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2 Author(s)
Binder, J.O. ; Alberta Telecommun. Res. Centre, Edmonton, Alta., Canada ; Cormack, G.D.

The authors present measurements that show that a semiconductor laser with weak optical feedback oscillates in the external-cavity mode with the narrowest linewidth rather than the mode with minimum threshold gain. A frequency fluctuation model that explains this narrowest linewidth operation is proposed. This model also correctly predicts mode-hopping frequencies. It is shown that the frequency span of the external-cavity modes determines the critical feedback level that causes coherence collapse

Published in:

Quantum Electronics, IEEE Journal of  (Volume:25 ,  Issue: 11 )