Abstract
The spectra of exciton-polariton photoluminescence from cylindrical microcavities under optical excitation below and above the polariton lasing threshold under conditions of strong exciton–photon coupling are studied. Under relatively weak optical excitation, modes of lateral quantization of polaritons and whispering gallery modes were detected. Spectral distribution of these modes and spatial dependence of their wave functions in the plane of the cavity were observed. With an increase in the excitation intensity and a transition to the polariton lasing mode, only one, the longest-wavelength lasing line remained in the spectrum. It is suggested that, under strong optical excitation, the spectrum contains not only exciton-polariton, but also trion-polariton radiation.
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Funding
The work of V.P. Kochereshko and L.V. Kotova was supported by the Russian Foundation for Basic Research (grant no. 19-02-00237). The work of P.G. Savvidis was supported by the Westlake University Foundation and the program 2018R01002 supported by Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang.
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Translated by E. Chernokozhin
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Kotova, L.V., Savvidis, P.G., Besombes, L. et al. Polariton Modes in a Cylindrical Microcavity in the Polariton Lasing Regime. Phys. Solid State 63, 722–727 (2021). https://doi.org/10.1134/S1063783421050103
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DOI: https://doi.org/10.1134/S1063783421050103