Large vacuum Rabi splitting in ZnO-based hybrid microcavities observed at room temperature

被引：32

作者：

Chen, Jun-Rong ^{[1
,2
]}

Lu, Tien-Chang ^{[1
,2
]}

Wu, Yung-Chi ^{[1
,2
]}

Lin, Shiang-Chi ^{[1
,2
]}

Liu, Wei-Rein ^{[1
,2
]}

Hsieh, Wen-Feng ^{[1
,2
]}

Kuo, Chien-Cheng ^{[3
]}

Lee, Cheng-Chung ^{[4
]}

机构：

[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 300, Taiwan

[2] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 300, Taiwan

[3] Natl Cent Univ, Thin Film Technol Ctr, Jhongli 320, Taiwan

[4] Natl Cent Univ, Dept Opt & Photon, Jhongli 320, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期

关键词：

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; SPECTROSCOPY;

D O I：

10.1063/1.3079398

中图分类号：

O59 [应用物理学];

学科分类号：

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 SiO2/HfO2 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.

引用

页数：3

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