Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 27: Poster: Quantum Optics and Photonics II
Q 27.21: Poster
Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof
Mode switching in bimodal lasers by varying the pump power — •Daniel Vorberg1, Heinrich A.M. Leymann2, Thomas Lettau2, Caspar Hopfmann3, Anna Musiał3, Christian Schneider5, Martin Kamp5, Sven Höfling5, Roland Ketzmerick1,4, Jan Wiersig2, Stephan Reitzenstein3, and André Eckardt1 — 1Max-Planck-Institut für Physik komplexer Systeme, Dresden — 2Otto-von-Guericke-Universität Magdeburg, Institut für Theoretische Physik — 3Technische Universität Berlin, Institut für Festkörperphysik — 4Technische Universität Dresden, Institut für Theoretische Physik — 5Universität Würzburg, Technische Physik
We investigate the switching of the lasing mode occurring in bimodal lasers when varying the pump power. Starting from a birth-death model we derive an analytic theory describing how many and which modes are lasing and how strong the lasing modes are occupied. This can be understood in the framework similar to that of the Bose selection [PRL 111, 240405 (2013)] and gives a new perspectives on multimode lasing. Fitting the model to experimental data for quantum-dot-based microlasers allows us to extract system parameters such as the mode-coupling rates or the ratio of the two emission rates into the cavity modes. Moreover, on the basis of the full photon statistics obtained numerically within the birth-death model, we show that the non-lasing modes exhibit strong (super-thermal) intensity fluctuations gii2(0)>2 and anti-correlations g122(0)<1 emerge whenever a mode starts or stops lasing.