光学微腔中WSe<sub>2</sub>激子与光子耦合效应的研究

梁爽; 钟义驰; 谢微

doi:10.3969/j.issn.1000-5641.202022003

光学微腔中WSe₂激子与光子耦合效应的研究

doi: 10.3969/j.issn.1000-5641.202022003

华东师范大学物理与电子科学学院, 上海　200241

基金项目: 国家自然科学基金(11674097)

详细信息

通讯作者:
谢　微, 男, 研究员, 博士生导师, 研究方向为固态环境中光-物质相互作用及其调控.E-mail: wxie@phy.ecnu.edu.cn

中图分类号: O472.3
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- 被引次数: 0
出版历程
- 收稿日期: 2020-03-06
- 刊出日期: 2021-01-27

Coupling behavior of WSe₂ exciton and photon in an optical microcavity

School of Physics and Electronic Science, East China Normal University, Shanghai　200241, China

摘要

摘要: 研究了300 K下, 自制的法布里-珀罗(Fabry–Pérot, F-P)半导体微腔中, 光场与WSe₂单分子薄膜激子之间的强弱耦合作用. 利用集成角分辨功能的显微荧光/白光反射光谱系统研究了样品的光学性质, 并在强耦合区间内看到了激子极化激元的形成, 对应的拉比分裂能量为46.7 meV. 理论拟合结果跟实验现象吻合, 为激子极化激元相干特性的进一步研究奠定了基础, 也为未来的工业光电器件应用提供了思路.
- 半导体微腔 /
- 单分子层薄膜 /
- 强耦合 /
- 激子极化激元
Abstract: In this paper, we study the strong and weak coupling between excitons of a WSe₂ monomolecular thin film and a light field in a self-made Fabry–Pérot semiconductor microcavity at 300 K. The optical properties of the sample were studied using a micro-fluorescence / white light reflection spectroscopy system with integrated angular resolution; the formation of exciton polaritons was observed in the strong coupling region, corresponding to a Rabi splitting energy of 46.7 meV. The theoretical fitting results agree with the experimental phenomena. This lays the foundation for further research on the coherent properties of exciton polaritons, and the study also provide ideas for the application of industrial optoelectronic devices in the future..
- semiconductor microcavity /
- monomolecular thin film /
- strong coupling /
- polariton

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图 1 样品结构示意图

Fig. 1 Diagram of a sample structure

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图 2 微腔A中强耦合现象及光路配置

Fig. 2 Strong coupling in microcavity A and optical path configuration

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图 3 微腔B中弱耦合现象

Fig. 3 Weak coupling in microcavity B

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