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arXiv · 1601.07332

Experimental realization of a polariton beam amplifier

Dominik Niemietz·Johannes Schmutzler·Przemyslaw Lewandowski·Karol Winkler·Marc Aßmann·Stefan Schumacher·Sebastian Brodbeck·Martin Kamp·Christian Schneider·Sven Höfling·Manfred Bayer
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Abstract

In this report we demonstrate a novel concept for a planar cavity polariton beam amplifier using non-resonant excitation. In contrast to resonant excitation schemes, background carriers are injected which form excitons, providing both gain and a repulsive potential for a polariton condensate. Using an attractive potential environment induced by a locally elongated cavity layer, the repulsive potential of the injected background carriers is compensated and a significant amplification of polariton beams is achieved without beam distortion.

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Dominik Niemietz, Johannes Schmutzler, Przemyslaw Lewandowski, Karol Winkler, Marc Aßmann, Stefan Schumacher, Sebastian Brodbeck, Martin Kamp, Christian Schneider, Sven Höfling, Manfred Bayer. 2016-01-27. Experimental realization of a polariton beam amplifier. https://doi.org/10.1103/physrevb.93.235301

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