title: Electro-optical switching between polariton and cavity lasing in an InGaAs quantum well microcavity.
abstract: We report on the condensation of microcavity exciton polaritons under optical excitation in a microcavity with four embedded InGaAs quantum wells. The polariton laser is characterized by a distinct non-linearity in the input-output-characteristics, which is accompanied by a drop of the emission linewidth indicating temporal coherence and a characteristic persisting emission blueshift with increased particle density. The temporal coherence of the device at threshold is underlined by a characteristic drop of the second order coherence function to a value close to 1. Furthermore an external electric field is used to switch between polariton regime, polariton condensate and photon lasing.
authors.forename: Matthias
authors.initials: M
authors.lastname: Amthor
authors.forename: Sebastian
authors.initials: S
authors.lastname: Weißenseel
authors.forename: Julian
authors.initials: J
authors.lastname: Fischer
authors.forename: Martin
authors.initials: M
authors.lastname: Kamp
authors.forename: Christian
authors.initials: C
authors.lastname: Schneider
authors.forename: Sven
authors.initials: S
authors.lastname: Höfling