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PL (thick red arrow) originates from the radiative decay of polaritons at small in-plane momenta k ||. The heavy hole 1s exciton resonance (dashed curve) and the photonic mode (dotted curve) are replaced by the upper polariton branch and lower polariton branch (UPB and LPB, respectively solid curves). THz probing (blue curve) maps out the matter component of the polaritons, while photoluminesce (PL, red arrows) leaking through a Bragg mirror reveals the photonic component. Panel A: polaritons (pink spheres with blue halo) emerge from strong coupling between the excitonic resonance in a quantum well (transparent sheet) and the photonic mode of a GaAs/AlGaAs microcavity. Panel G: edge and interior phonon polaritons in a 40-nm-thick slab of hBN. Panels F: nanoinfrared images of edge phonon polaritons in the 25-nm-thick slab of hBN. Panel E: nanoinfrared image of edge plasmons in a square sample of graphene. White dashed lines mark the boundaries of the crosscut GNR. Panels B-D: nano-IR imaging of edge plasmons on graphene nanoribbons.
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Three types of plasmonic fringes are observed: (i) edge plasmon polaritons (dark spots at along the physical boundary of graphene crystal), (ii) interior plasmon polaritons (oscillating wave pattern emanating from the boundary of graphene on the left), and (iii) defect-launched plasmon polaritons forming circular patterns in the interior of the sample. Panel A: charge transfer plasmon polaritons at the interface of graphene and a-RuCl3 visualized by means of nanoinfrared methods (ω = 898 cm −1, T = 60 K). Interior and edge polaritons in van der Waals quantum materials.
![Kermis simulaties 2d environments](https://kumkoniak.com/10.jpg)