Figure 6 | Light: Science & Applications

Figure 6

From: Plasmonic enhancement and polarization dependence of nonlinear upconversion emissions from single gold nanorod@SiO2@CaF2:Yb3+,Er3+ hybrid core–shell–satellite nanostructures

Figure 6

Calculated electric field intensity enhancement under a 980-nm excitation polarized parallel to (a) the long axis and (b) short axis of a single GNR@SiO2 nanostructure. The enhancement factors are logarithmically scaled. (c) 3D diagram of GNR@SiO2 with a dipole source placed at the two intersections of the silica surface with the coordinate axes Y and Z, indicated as positions T and L, respectively. (d) Polar plots of normalized calculated emission intensities of dipole sources with green (540 nm) and red (660 nm) emissions located at positions L and T.

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