2000 character limit reached
Experimental realization of a polariton beam amplifier (1601.07332v1)
Published 27 Jan 2016 in cond-mat.mes-hall and cond-mat.quant-gas
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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