Spectral Signatures of Exceptional Points and Bifurcations in the Fundamental Active Photonic Dimer

Abstract

The fundamental active photonic dimer consisting of two coupled quantum well lasers is investigated in the context of the rate equation model. Spectral transition properties and exceptional points are shown to occur under general conditions, not restricted by PT-symmetry as in coupled mode models, suggesting a paradigm shift in the field of non-Hermitian photonics. The optical spectral signatures of system bifurcations and exceptional points are manifested in terms of self-termination effects and observable drastic variations of the spectral line shape that can be controlled in terms of optical detuning and inhomogeneous pumping.

arXiv comment13 pages, 5 figures

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• Rate equation analysis and non-Hermiticity in coupled semiconductor laser arrays
• Nonlinear exceptional-point lasing with ab-initio Maxwell-Bloch theory
• Radically Tunable Ultrafast Photonic Oscillators via Differential Pumping
• Spatial Control of Localized Oscillations in Arrays of Coupled Laser Dimers
• Simulating the spectral gap with polariton graphs
• Antiresonances and Ultrafast Resonances in a Twin Photonic Oscillator
• Routes to chaos in a class-B laser coupled to a neutral resonator