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Relaxation oscillations and ultrafast emission pulses in a disordered expanding polariton condensate
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dc.contributor.author | Pieczarka, Maciej | |
dc.contributor.author | Syperek, Marcin | |
dc.contributor.author | Dusanowski, Łukasz | |
dc.contributor.author | Opala, Andrzej | |
dc.contributor.author | Langer, Fabian | |
dc.contributor.author | Schneider, Christian | |
dc.contributor.author | Höfling, Sven | |
dc.contributor.author | Sȩk, Grzegorz | |
dc.date.accessioned | 2017-08-14T09:30:10Z | |
dc.date.available | 2017-08-14T09:30:10Z | |
dc.date.issued | 2017-12-01 | |
dc.identifier | 250754890 | |
dc.identifier | 9652c364-850b-43ad-b301-c06350362b97 | |
dc.identifier | 85026821396 | |
dc.identifier | 000406815600007 | |
dc.identifier.citation | Pieczarka , M , Syperek , M , Dusanowski , Ł , Opala , A , Langer , F , Schneider , C , Höfling , S & Sȩk , G 2017 , ' Relaxation oscillations and ultrafast emission pulses in a disordered expanding polariton condensate ' , Scientific Reports , vol. 7 , no. 1 , 7470 . https://doi.org/10.1038/s41598-017-07470-8 | en |
dc.identifier.issn | 2045-2322 | |
dc.identifier.uri | https://hdl.handle.net/10023/11439 | |
dc.description.abstract | Semiconductor microcavities are often influenced by structural imperfections, which can disturb the flow and dynamics of exciton-polariton condensates. Additionally, in exciton-polariton condensates there is a variety of dynamical scenarios and instabilities, owing to the properties of the incoherent excitonic reservoir. We investigate the dynamics of an exciton-polariton condensate which emerges in semiconductor microcavity subject to disorder, which determines its spatial and temporal behaviour. Our experimental data revealed complex burst-like time evolution under non-resonant optical pulsed excitation. The temporal patterns of the condensate emission result from the intrinsic disorder and are driven by properties of the excitonic reservoir, which decay in time much slower with respect to the polariton condensate lifetime. This feature entails a relaxation oscillation in polariton condensate formation, resulting in ultrafast emission pulses of coherent polariton field. The experimental data can be well reproduced by numerical simulations, where the condensate is coupled to the excitonic reservoir described by a set of rate equations. Theory suggests the existence of slow reservoir temporarily emptied by stimulated scattering to the condensate, generating ultrashort pulses of the condensate emission. | |
dc.format.extent | 8 | |
dc.format.extent | 2260682 | |
dc.language.iso | eng | |
dc.relation.ispartof | Scientific Reports | en |
dc.subject | QC Physics | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.title | Relaxation oscillations and ultrafast emission pulses in a disordered expanding polariton condensate | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1038/s41598-017-07470-8 | |
dc.description.status | Peer reviewed | en |
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