Characteristics of exciton polaritons in a ZnO microcavity

被引：2
|
作者：
Kawase, Toshiki [1 ]
Komura, Shingo [1 ]
Miyazaki, Kenichi [1 ]
Kim, DaeGwi [1 ]
Nakayama, Masaaki [1 ]
机构：
[1] Osaka City Univ, Dept Appl Phys, Sumiyoshi Ku, Osaka 5588585, Japan
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2010年 / 42卷 / 10期
关键词：
ZnO; Microcavity; Exciton polariton; Rabi splitting;
D O I：
10.1016/j.physe.2009.12.058
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We have investigated the characteristics of exciton polaritons in a ZnO microcavity with HfO2/SiO2 distributed Bragg reflectors. The results of the angle-resolved reflectance spectra were analyzed by calculating the cavity polariton dispersions with a phenomenological Hamiltonian for the coupling between the cavity photon and three kinds of excitons labeled A, B, and C peculiar to ZnO. The vacuum-Rabi-splitting energy is estimated to be similar to 80 meV. The reflectance dips originating from the cavity polaritons shift to lower energy side with an increase in temperature. We discuss the temperature dependence of the cavity-polariton energies of the ZnO microcavity on the basis of the phenomenological Hamiltonian taking account of the temperature dependence of the exciton energies with Varshni's law. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：2567 / 2570
页数：4
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