標題: Large vacuum Rabi splitting in ZnO-based hybrid microcavities observed at room temperature
作者: Chen, Jun-Rong
Lu, Tien-Chang
Wu, Yung-Chi
Lin, Shiang-Chi
Liu, Wei-Rein
Hsieh, Wen-Feng
Kuo, Chien-Cheng
Lee, Cheng-Chung
光電工程學系
Department of Photonics
關鍵字: aluminium compounds;binding energy;distributed Bragg reflectors;epitaxial growth;excitons;gallium compounds;hafnium compounds;III-V semiconductors;II-VI semiconductors;integrated optics;microcavities;oscillator strengths;polaritons;semiconductor growth;silicon compounds;spin-orbit interactions;wide band gap semiconductors;zinc compounds
公開日期: 9-二月-2009
摘要: Wide-band gap ZnO semiconductors are attractive materials for the investigation of microcavity exciton polaritons due to the large exciton binding energy and oscillator strength. We report the growth and characterization of bulk ZnO-based hybrid microcavity. The phenomenon of strong exciton-photon coupling at room temperature has been observed in the ZnO-based hybrid microcavity structure, which consists of 30 pair epitaxially grown AlN/AlGaN distributed Bragg reflector (DBR) on the bottom side of the 3/2 lambda thick ZnO cavity and 9 pair SiO(2)/HfO(2) DBR as the top mirror. The cavity quality factor is about 221. The experimental results show good agreement with theoretically calculated exciton-polariton dispersion curves based on transfer matrix method. From the theoretical and experimental exciton-polariton dispersion curves with two different cavity-exciton detuning values, the large vacuum Rabi splitting is estimated to be about 58 meV in the ZnO-based hybrid microcavity.
URI: http://dx.doi.org/10.1063/1.3079398
http://hdl.handle.net/11536/7639
ISSN: 0003-6951
DOI: 10.1063/1.3079398
期刊: APPLIED PHYSICS LETTERS
Volume: 94
Issue: 6
結束頁: 
顯示於類別:期刊論文


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