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arXiv · 1804.06832

Generation of Anti-Stokes Fluorescence in a Strongly Coupled Organic Semiconductor Microcavity

Kyriacos Georgiou·Rahul Jayaprakash·Alexis Askitopoulos·David M. Coles·Pavlos G. Lagoudakis·David G. Lidzey
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Abstract

We explore the generation of anti-Stokes fluorescence from strongly coupled organic dye microcavities following resonant ground-state excitation. We observe polariton emission along the lower polariton branch, with our results indicating that this process involves a return to the exciton reservoir and the absorption of thermal energy from molecules in a vibrationally excited ground-state. We speculate that the generation of a population of "hot" polaritons is enhanced by the fact that the cavity supresses the emission of Stokes-shifted fluorescence, as it is located energetically below the cut-off frequency of the cavity.

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Kyriacos Georgiou, Rahul Jayaprakash, Alexis Askitopoulos, David M. Coles, Pavlos G. Lagoudakis, David G. Lidzey. 2018-04-18. Generation of Anti-Stokes Fluorescence in a Strongly Coupled Organic Semiconductor Microcavity. https://doi.org/10.1021/acsphotonics.8b00552

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