1. Influence of the excitonic broadening on the strong light-matter coupling in bulk zinc oxide microcavities.
- Author
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Médard, F., Lagarde, D., Zúñiga-Pérez, J., Disseix, P., Mihailovic, M., Leymarie, J., Frayssinet, E., Moreno, J. C., Semond, F., Leroux, M., and Bouchoule, S.
- Subjects
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EXCITON theory , *REFLECTANCE , *PHOTOLUMINESCENCE , *LOW temperatures , *POLARITONS - Abstract
We present an experimental study of the influence of excitonic broadening on the strong-coupling regime in a bulk-ZnO microcavity. At room temperature, the strong coupling is highlighted using both angle-resolved reflectivity and photoluminescence measurements; a Rabi splitting value of 40 meV is determined. The polaritonic behavior is also evidenced at low temperature, even if a bulklike reflectivity signature is observed in the excitonic range. Using transfer-matrix calculations, this phenomenon is explained through the influence of the huge excitonic absorption whose contribution depends on the broadening value. Finally, we demonstrate that this effect should not prevent a lasing from the polaritons. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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