Journal
PHYSICAL REVIEW E
Volume 88, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.88.032907
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Funding
- Fond National de la Recherche Scientifique (Belgium)
- Interuniversity Attraction Poles program of the Belgian Science Policy Office [IAP P7-35]
- AFOSR Electromagnetics Portfolio of Dr. Arje Nachman
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The stability properties of an injected quantum cascade laser are investigated analytically on the basis of current estimates of the laser parameters. We show that in addition to stable locking, Hopf bifurcations leading to pulsating intensities are possible. We discuss the stability diagrams in terms of the detuning and the injection rate for different values of the linewidth enhancement factor. The analysis indicates domains of coexistence between two stable steady states (bistability) or between a stable steady state and stable periodic oscillations. All predictions are verified numerically by determining bifurcation diagrams from the laser rate equations.
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