Regensburg 2010 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 31: Poster I: Devices, Quantum Dots and Quantum Wires

HL 31.2: Poster

Tuesday, March 23, 2010, 18:30–20:30, Poster D1

Small and large signal analysis of quantum dot lasers — •Roland Aust¹, Christian Otto¹, Joshua Horowitz², Kathy Lüdge¹, and Eckehard Schöll¹ — ¹Institut f. Theoretische Physik, Sekr. EW 7-1, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin — ²Massachusetts Institute of Technology, Cambridge

In this work a quantum dot laser with an external cavity is modeled using a rate equation system treating electron and hole dynamics separately and including microscopically calculated carrier-carrier scattering rates. We show under which conditions the model reproduces the dynamics of an experimental setup perfectly, and, which additional effects are observed by introducing the external cavity. The laser’s small signal response is discussed in detail as well as a large signal analysis in terms of eye diagrams.