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Berlin 2015 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 25: Quantum dots: Microcavities and microlaser

HL 25.6: Vortrag

Dienstag, 17. März 2015, 10:45–11:00, EW 203

Influence of optical feedback on the characteristics of quantum dot micropillar lasers — •Steffen Holzinger1, Elisabeth Schlottmann1, Sören Kreinberg1, Micha Strauß2, Christian Schneider2, Sven Höfling2,3, Janik Wolters1, Martin Kamp2, and Stephan Reitzenstein11Technische Universität Berlin, Germany — 2Universität Würzburg, Germany — 3Present address: University of St Andrews, United Kingdom

The chaotic behavior of feedback-coupled semiconductor lasers has been so far mainly experimentally studied in the classical regime. Electrically pumped quantum dot micropillar lasers constitute an advantageous platform for the realization of feedback experiments in the quantum regime, when single photon and single emitter effects become prominent. In these structures two linear, orthogonally polarized lasing modes compete using a common gain medium, resulting in a significant difference between the output power characteristics, especially above the lasing threshold. Using an external cavity, we investigate the influence of the feedback strength and polarization on the output power, photon statistics and coherence times of the lasing modes.

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DPG-Physik > DPG-Verhandlungen > 2015 > Berlin