Dispersion of exciton-polariton based on ZnO/MgZnO quantum wells at room temperature  

作　　者：Huying Zheng Zhiyang Chen Hai Zhu Ziying Tang Yaqi Wang Haiyuan Wei Chongxin Shan 郑湖颖;陈智阳;朱海;汤梓荧;王亚琪;韦海园;单崇新(State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,Sun Yat-Sen University,Guangzhou 510275,China;Key Laboratory of Materials Physics of Ministry of Education,School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450052,China)

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,Sun Yat-Sen University,Guangzhou 510275,China [2]Key Laboratory of Materials Physics of Ministry of Education,School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450052,China

出　　处：《Chinese Physics B》2020年第9期181-185,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11974433,91833301,and 11974122);the Guangdong Natural Science Fund for Distinguished Young Scholars,China(Grant No.2016A030306044);the Science and Technology Program of Guangzhou,China(Grant No.201707020014).

摘　　要：We report observation of dispersion for coupled exciton-polariton in a plate microcavity combining with ZnO/MgZnO multi-quantum well (QW) at room temperature. Benefited from the large exciton binding energy and giant oscillator strength, the room-temperature Rabi splitting energy can be enhanced to be as large as 60 meV. The results of excitonic polariton dispersion can be well described using the coupling wave model. It is demonstrated that mode modification between polariton branches allowing, just by controlling the pumping location, to tune the photonic fraction in the different detuning can be investigated comprehensively. Our results present a direct observation of the exciton-polariton dispersions based on two-dimensional oxide semiconductor quantum wells, thus provide a feasible road for coupling of exciton with photon and pave the way for realizing novel polariton-type optoelectronic devices.

关 键 词：quantum wells EXCITON POLARITON MICROCAVITY 

分 类 号：O471.1[理学—半导体物理]