Observation of Exciton Polaritons in a ZnO Microcavity with HfO_2/SiO_2 Distributed Bragg Reflectors(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

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概要

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• We have investigated the characteristics of the exciton polaritons in a ZnO microcavity. The microcavity consists of an effective one-wavelength thick ZnO active layer and HfO_2/SiO_2 distributed Bragg reflectors (DBRs) at the bottom and top. We adopted rf magnetron sputtering and pulsed laser deposition for the preparation of the DBR and ZnO layer, respectively. Angle-resolved reflectance and photoluminescence spectra demonstrate the formation of the cavity polaritons. The cavity polariton dispersions are analyzed using a phenomenological Hamiltonian for the coupling between the cavity photon and three kinds of fundamental excitons labeled A, B, and C. The vacuum Rabi splitting energy is estimated to be〜80meV. The giant Rabi splitting energy reflects the large exciton oscillator strength of ZnO.

• 社団法人日本物理学会の論文
• 2008-09-15

著者

• Nakayama Masaaki

  Department Of Applied Physics Faculty Of Engineering Osaka City University

• Nakayama Masaaki

  Department Of Applied Physics Graduate School Of Engineering Osaka City University

• Kim Daegwi

  Department Of Physics Ajou University

• Komura Shingo

  Department Of Applied Physics Graduate School Of Engineering Osaka City University

• KAWASE Toshiki

  Department of Applied Physics, Graduate School of Engineering, Osaka City University

• Kawase Toshiki

  Department Of Applied Physics Graduate School Of Engineering Osaka City University

• Kim DaeGwi

  Department of Applied Physics, Graduate School of Engineering, Osaka City University

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