Dresden 2017 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 43: Nonlinear Dynamics, Synchronizsation and Chaos

DY 43.1: Talk

Thursday, March 23, 2017, 09:30–09:45, ZEU 118

Optical injection in quantum dot micropillar lasers — •Xavier Porte¹, Elisabeth Schlottmann¹, Steffen Holzinger¹, Benjamin Lingnau², Kathy Lüdge², Christian Schneider³, Martin Kamp³, Sven Höfling³, Janik Wolters^1,4, and Stephan Reitzenstein¹ — ¹Institut für Feskörperphysik, Technische Universität Berlin, Germany — ²Institut für Theoretische Physik, Technische Universität Berlin, Germany — ³Technische Physik, Julius-Maximilians-Universität Würzburg, Germany — ⁴Present address: Department of Physics, University of Basel, Switzerland

Semiconductor lasers are well known to exhibit highly nonlinear behavior when subject to external optical injection and coupling. Particularly interesting nowadays is the case of microlasers, where such nonlinearities can be studied at the edge of cavity quantum electrodynamics (cQED). In the present work, we explore the phenomenon of optical injection applied to quantum dot micropillar lasers. These lasers are based on high-quality micropillar cavities containing a single layer of quantum dots as active medium. In contrast to the classical scenario of optical injection, high-β microlasers can oscillate simultaneously in a state which is synchronized to the external signal and at its solitary natural frequency, a phenomenon that we refer as partial injection locking (Schlottmann, E. et al, Phys. Rev. Applied 6, 044023 (2016)). We extensively investigate the influence of optical injection on the output power, polarization behavior, photon statistics and coherence times of the lasing modes. Our results enable the external control and tailoring of the emission of microlasers in the cQED regime.