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Optical study of bulk ZnO for strong coupling observation in ZnO-based microcavities
Institution:1. LASMEA, UMR 6602 UBP/CNRS, 24 Avenue des Landais, 63177 Aubière Cedex, France;2. CRHEA, CNRS, Rue B. Gregory, Sophia Antipolis, 06560 Valbonne, France;3. GES, CNRS/Université Montpellier II, Case courrier 074, 34095 Montpellier Cedex 5, France;1. School of Chemical Engineering, Kunming University of Science and Technology, Chenggong Campus, Kunming, Yunan 650504, China;2. Faculty of Science, Kunming University of Science and Technology, Chenggong Campus, Kunming, Yunan 650504, China;1. Province Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, People''s Republic of China;2. Department of Physics, and Institute for Interdisciplinary Research, Jianghan University, Wuhan 430056, People''s Republic of China;1. CNRS – CRHEA, Rue Bernard Grégory, 06560 Valbonne, France;2. CEA – LETI, MINATEC Campus, 17 Rue Des Martyrs, 38054 Grenoble Cedex 9, France
Abstract:We report an experimental study of the excitonic properties of bulk ZnO and the strong coupling observation in hybrid ZnO-based microcavities. The strong coupling is highlighted with a Rabi splitting value of about 70 meV. The influence of the excitonic and band-to-band absorptions on the observation of this strong light-matter coupling regime is analysed through the evolution of the reflectivity spectra obtained on microcavities with different active layer thicknesses.
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