Research / 2020 / Article / Fig 2

Research Article

Structuring Nonlinear Wavefront Emitted from Monolayer Transition-Metal Dichalcogenides

Figure 2

(a) Calculated transmission spectrum of a single Au rectangular nanohole under a CP excitation by using the FDTD method. The inset shows the calculated electric-field distribution at 810 nm. (b) Measured spectra of the emitted SH signals of the Au-WS2 interface (red curve), a bare WS2 monolayer (blue curve), and pure Au nanoholes (black curve). (c) Intensity of the emitted signal of the Au-WS2 interface increases linearly as the square of incident power.