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  • Received: Dec. 12, 2018

    Accepted: Jan. 10, 2019

    Posted: Feb. 14, 2019

    Published Online: Feb. 14, 2019

    The Author Email: Weili Zhang (wl_zhang@uestc.edu.cn)

    DOI: 10.3788/COL201917.020014

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    Mahnoor Shahzadi, Weili Zhang, M. T. Khan. Exciton-polariton in WS2 microcavity in the presence of the optical Stark effect[J]. Chinese Optics Letters, 2019, 17(2): 020014

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Exciton energy and dispersion of polaritons for different values of an OS pulse. a, Energy shift of excitons as a function of E2Δ. b, Dispersion of polaritons. c, Shift of the polariton dispersion. d, Changes of the excitonic and photonic fraction. In b–d, Δ=0.2 meV, and E0 is 75, 100, 125, 150 MV, respectively (from down to up or from inside to outside).

Fig. 1. Exciton energy and dispersion of polaritons for different values of an OS pulse. a, Energy shift of excitons as a function of E2Δ. b, Dispersion of polaritons. c, Shift of the polariton dispersion. d, Changes of the excitonic and photonic fraction. In b–d, Δ=0.2meV, and E0 is 75, 100, 125, 150 MV, respectively (from down to up or from inside to outside).

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Difference between UP and LP branches at various values of k, i.e., at k=0,1,2 (a, b, and c, respectively).

Fig. 2. Difference between UP and LP branches at various values of k, i.e., at k=0,1,2 (a, b, and c, respectively).

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Dynamic analysis of the Stark effect on the energy shift of the polaritonic field. a, Waveform in the time domain. b, Fast Fourier transform of the waveform. In the calculation, k=0, t0=500, and a=0.5 ps.

Fig. 3. Dynamic analysis of the Stark effect on the energy shift of the polaritonic field. a, Waveform in the time domain. b, Fast Fourier transform of the waveform. In the calculation, k=0, t0=500, and a=0.5ps.

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Polarization degree versus E2Δ (simulation Ein=0.5 is considered).

Fig. 4. Polarization degree versus E2Δ (simulation Ein=0.5 is considered).

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