Optical probing of the Coulomb interactions of an electrically pumped polariton condensate
Abstract
We report on optical probing of the Coulomb interactions in an electrically driven exciton-polariton laser. By positioning a weak non-resonant Gaussian continuous wave-beam with a diameter of 2 μm inside an electrical condensate excited in a 20 μm diameter micropillar, we study a repulsion effect which is characteristic of the part-excitonic nature of the microcavity system in strong coupling. It manifests itself in a modified real space distribution of the emission pattern. Furthermore, polariton repulsion results in a continuous blueshift of the emission with increased power of the probe beam. A Gross-Pitaevskii equation approach based on modeling the electrical and optical potentials explains our experimental data.
Citation
Klaas , M , Mandal , S , Liew , T C H , Amthor , M , Klembt , S , Worschech , L , Schneider , C & Höfling , S 2017 , ' Optical probing of the Coulomb interactions of an electrically pumped polariton condensate ' , Applied Physics Letters , vol. 110 , no. 15 , 151103 . https://doi.org/10.1063/1.4979836
Publication
Applied Physics Letters
Status
Peer reviewed
ISSN
0003-6951Type
Journal article
Description
The authors would like to thank the State of Bavaria for financial support. SM and TL were supported by the NAP Start-Up grant M4081630 and MOE AcRF Tier 1 grant 2016-T1-001-084.Collections
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