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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: Raman Mapping Analysis of Graphene-Integrated Silicon Micro-Ring Resonators

Fig. 3

Representative graphene G (left) and 2D (right) averaged (n = 3) Raman scattering peaks (633-nm excitation) OFF (top) and ON (bottom) the underlying silicon MRR waveguide structure. Lines represent either double (G peak) or single (2D peak) Lorentzian fits to the data. The asymmetry in the G peak as a result of the lowering of the degeneracy of the in-plane E 2g optical phonon leads to distinct scattering modes, labelled G+ and G (in keeping with the convention used for carbon nanotubes)

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