Figure 5: Redirecting second harmonic generation (SHG) from a Ag-coated CdS nanowire (NW) (S-NW) to another NW (W-NW). | Nature Communications

Figure 5: Redirecting second harmonic generation (SHG) from a Ag-coated CdS nanowire (NW) (S-NW) to another NW (W-NW).

From: Enhanced second-harmonic generation from metal-integrated semiconductor nanowires via highly confined whispering gallery modes

Figure 5

(a) Scanning electron microscope image of a T-type structure formed by S-NW and W-NW. The excitation is polarized along the long axis of W-NW. J (R) stands for the junction (reference point) on the S-NW. Scale bar, 2 μm. (b,c) Optical image of symmetrical SHG signal emanating from the reference point (R) of S-NW in the bright (b) and dark (c) field mode. (d,e) SHG from the junction (J) of S-NW launched into W-NW in the bright (d) and dark (e) field mode. Here label 1 (or 2) represents the junction (or output port of W-NW). (f,g) SHG signal collected from 1 (f) and 2 (g). The data from 1 is normalized by the maximum of that obtained from 2.

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