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- W2974782022 abstract "GaN-based resonators supporting whispering gallery modes are suggested as a promising approach for fabrication of efficient nanophotonic applications. A modification of excitonic emission due to coupling with cavity modes is observed experimentally in the GaN planar hexagonal microcavities grown by a selective area metal-organic vapor phase epitaxy. Low temperature cathodoluminescence spectra measured in-situ scanning electron microscope show two or three emission peaks split by 100 meV or 160 meV for the resonators formed by double- and single-wall micro-nuts, respectively. The results are compared with numerical calculations of the cavity mode energies, their Q-factors and the spatial distribution of the modes intensities. Although most modes are characterized by a small Purcell coefficient, there are a limited number of isolated cavity modes with a large Purcell factor. Such modes can efficiently interact with the bulk exciton in GaN. The results are also analyzed by diagonalization of Hamiltanion describing the system of interacting exciton and cavity modes. Theoretically, it is shown that a strong coupling between the exciton and the cavity modes is possible in such micro-resonators." @default.
- W2974782022 created "2019-09-26" @default.
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- W2974782022 date "2019-09-20" @default.
- W2974782022 modified "2023-10-03" @default.
- W2974782022 title "Modification of Excitonic Emission in GaN Microcavities Formed by Planar Hexagonal Micro-Nuts Grown by Selective Area Epitaxy" @default.
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