28 April 2016 InAs/GaAs excited state quantum-dot transmitters operating under long-delayed optical feedback
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Abstract
In this work, the sensitivity to external optical feedback of two different InAs/GaAs QD Fabry-Perot (FP) lasers is investigated under long cavity regime. The first, which has a 1.5 mm-long cavity, emits on the GS while the second one, which is 1 mm long, radiates solely on the ES transition. The results indicate that for the same bias level, the ES laser presents a larger sensitivity to external feedback, the critical level being under 1% versus above 9% for the GS laser. In particular, the ES laser exhibits a route to chaos such that the first destabilization occurs for a lower feedback strength than for the GS laser.
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Heming Huang, Kevin Schires, Frédéric Grillot, Dejan Arsenijević, Tagir Sadeev, Dieter Bimberg, "InAs/GaAs excited state quantum-dot transmitters operating under long-delayed optical feedback", Proc. SPIE 9892, Semiconductor Lasers and Laser Dynamics VII, 98920C (28 April 2016); doi: 10.1117/12.2227953; https://doi.org/10.1117/12.2227953
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