1. Exciton–polaritons of hBN/WS2 heterostructure in cavity observed at room temperature.
- Author
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Zhao, Xinchao, Cui, Zhuangzhuang, Ge, Anping, Lu, Xinle, Guan, Xueyu, Zhang, Jian, Zhen, Honglou, Sun, Liaoxin, Wang, Shaowei, and Lu, Wei
- Subjects
POLARITONS ,OPTICAL pumping ,TRANSITION metals ,TEMPERATURE ,HETEROSTRUCTURES ,PHOTONS - Abstract
The layer-by-layer buildup of a two-dimensional transition metal dichalcogenide monolayer to form a stack is an important development for these materials, which performs many remarkable properties in the light–matter interaction. Herein, we find clear evidence of exciton–polaritons emerging from WS
2 /hBN/WS2 heterostructures embedded in a dielectric microcavity under optical pumping. A large Rabi splitting of 15 meV is observed at room temperature, which increases to 25 meV at 5 K. An all-dielectric Fabry–Pérot microcavity provides a simple but effective way to study the room temperature strong coupling between cavity photons and excitons. Our results pave the way for room-temperature polaritonic devices based on quantum-well van der Waals heterostructures. [ABSTRACT FROM AUTHOR]- Published
- 2022
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