Fig. 5: Experimental validation of the linear and nonlinear optical response of multilayer metasurfaces.
From: Bilayer optical metasurfaces with multiple broken symmetries for nonlinear wavelength generation
Simulated (blue) and measured transmission spectra (red) obtained from a white-light spectroscopy setup for a the single-layer and b aligned bilayer structures. c Measured transmission spectra for four samples with different horizontal displacements of \(\Delta \approx \left[0,\,100,150,\,250\right]\). d Measured THG signal of single-layer (black dots), aligned bilayer metasurface (red dots), and bare silicon film (blue dots) with pumping wavelength ranging from 1200 nm to 1400 nm. e Measured THG signal at the GMR resonance wavelength for the multilayer structure with different horizontal displacements, with pumping wavelength varying from 1050 nm to 1125 nm.
