Figure 1:

Sample and setup. (a) SEM micrograph (left) and schematic (right) of the sample. The arrays are fabricated out of a continuous SiC membrane of a varying thickness. (b) An experimental mid-IR transmittance spectrum of the sample for the design polarization (solid line) and the corresponding FDTD calculation (dashed line). The spectrum of the pump laser is superimposed (gray shaded area). The calculated local field distribution at a wavelength of 4,000 nm in the middle section of the meta-membrane is shown to provide a substantial field enhancement at the pump wavelength. (c) Schematic of the experimental FHG BFP imaging setup.