Nonequilibrium polariton dynamics in organic microcavities

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Lupton, John Mark
Other Author Schouwink, P.; von Berlepsch, H.; Dähne, L.; Mahrt, R. F.
Title Nonequilibrium polariton dynamics in organic microcavities
Date 2002-08
Description Microcavities containing a J-aggregate forming organic dye were prepared in the strong-coupling regime. Changing the position of the neat organic films within the microcavity allows a tuning of the giant Rabi splitting observed. We set the Rabi splitting to 25 meV and study the thermal activation of the higher-energy polariton emission under excitation off resonance. This is found to exhibit an Arrhenius activation with an energy corresponding to the polariton branch splitting. A constant offset to the upper polariton is observed at low temperature. Microsecond gated spectroscopy reveals that thermalization of the system occurs on the time scale of milliseconds, which contrasts with the polariton lifetime in the range of picoseconds. Bulk sample heating cannot fully account for the slow polariton thermalization observed in steady-state experiments, suggesting that long-lived macroscopic polariton coherence influences the polariton relaxation.
Type Text
Publisher American Physical Society
Journal Title Physical Review B
Volume 66
Issue 8
DOI 10.1103/PhysRevB.66.081203
citatation_issn 0163-1829
Subject Nonequilibrium polariton dynamics; Organic microcavities; Optical microcavities; Rabi splitting; Light-matter interactions; Arrhenius activation
Subject LCSH Polaritons; Thin films -- Optical properties
Language eng
Bibliographic Citation Schouwink, P., Lupton, J. M., von Berlepsch, H., Dähne, L., & Mahrt, R. F. (2002). Nonequilibrium polariton dynamics in organic microcavities. Physical Review B: Rapid Communications, 66(8), 081203.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevB.66.081203
Format Medium application/pdf
Format Extent 88,570 bytes
Identifier ir-main,11904
ARK ark:/87278/s6s47980
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Reference URL https://collections.lib.utah.edu/ark:/87278/s6s47980