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  • Received: Aug. 13, 2019

    Accepted: --

    Posted: Nov. 4, 2020

    Published Online: Nov. 4, 2020

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    DOI: 10.7498/aps.69.20191225

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    Han Wu, Jing-Yu Wu, Zhuo Chen. Strong coupling between metasurface based Tamm plasmon microcavity and exciton[J]. Acta Physica Sinica, 2020, 69(1): 010201-1

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Acta Physica Sinica, Vol. 69, Issue 1, 010201-1 (2020)

Strong coupling between metasurface based Tamm plasmon microcavity and exciton

Wu Han, Wu Jing-Yu, and Chen Zhuo*

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    In this paper, the Tamm plasmon and its interaction with excitons in a plasmon microcavity consisting of metasurface, dielectric spacer, distributed Bragg reflector (DBR) are studied. The reflection phase of light on the surface can be controlled by changing the structure parameters in the metasurface. When the thickness of the dielectric spacer layer of the microcavity structure keeps unchanged, the resonance position of the Tamm plasmon mode supported by the microcavity structure can be adjusted by varying the structure parameters of the metasurface, and thus providing more degrees of freedom for regulating the Tamm plasmon mode. In addition, by comparing the traditional metal thin film-dielectric spacer-DBR structure, we find that the introduction of metasurface and its regulation of reflection phase can make the metasurface-dielectric spacer-DBR structure support the Tamm plasmon mode resonance at the same wavelength under a smaller thickness of spacer. And combining the local characteristics of the super-surface field, the model volume of Tamm plasmon can be reduced effectively. On this basis, we compare the interaction of traditional and metasurface-based Tamm plasmon with single-layer tungsten disulfide (WS2), and find that metasurface-based Tamm plasmon can produce stronger photon-exciton coupling and obtain larger Rabi splitting.


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