Experimental observation of strong light-matter coupling in ZnO microcavities: influence of large excitonic absorption

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Médard, François
Zúñiga-Pérez, Jesús
Disseix, Pierre
Mihailovic, Martine
Leymarie, Joel
Vasson, A.
Semond, Fabrice
Frayssinet, Eric
Moreno, Jean-Christophe
Leroux, Mathieu
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Abstract
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We present experimental observation of the strong light-matter coupling regime in ZnO bulk microcavities grown on silicon. Angle resolved reflectivity measurements, corroborated by transfer-matrix simulations, show that Rabi splittings in the order of 70 meV are achieved even for low finesse cavities. The impact of the large excitonic absorption, which enables a ZnO bulk-like behavior to be observed even in the strong coupling regime, is illustrated both experimentally and theoretically by considering cavities with increasing thickness.
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Condensed Matter - Other Condensed Matter
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