22 February 2017 Increasing stability by two-state lasing in quantum-dot lasers with optical injection
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Abstract
A quantum dot (QD) laser capable of two-state lasing in certain parameter regions is studied under external optical injection. Our modeling approach is based on microscopically based rate equations, which include carrier dependent index shifts obtained from a full Bloch-equation approach. Our results show an increase of the dynamical stability of the two-state QD laser under optical perturbations if compared to a single-state QD laser, e.g. to a QD laser with high losses in the excited state. Chaotic dynamics predicted for single-state QD lasers under strong and detuned injection completely vanishes if excited state lasing is possible. This suggests a general trend for semiconductor lasers to yield an improved stability against optical perturbations with more dynamical degrees of freedom.
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Stefan Meinecke, Stefan Meinecke, Benjamin Lingnau, Benjamin Lingnau, Kathy Lüdge, Kathy Lüdge, "Increasing stability by two-state lasing in quantum-dot lasers with optical injection", Proc. SPIE 10098, Physics and Simulation of Optoelectronic Devices XXV, 100980J (22 February 2017); doi: 10.1117/12.2251791; https://doi.org/10.1117/12.2251791
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