File Name : figure_s1.tiff

Caption : fig. s1. transmittance of the four selected groups of resonances: (a) 10.4 mm, (b) 11.2 mm, (c) 11.43 mm, and (d) 12.3 mm. the blue vertical axis on the left indicates the frequency and the red vertical axis is the corresponding wavelength in μm. the white dashed boxes mark the high transmittance regions () that are used in our design.

File Name : figure_s2.tiff

Caption : fig. s2. cross section of the optimized metasurface with 4 layers of meta-atoms. the diameters of the meta-atoms are varied along the direction. from the top layer #1 to the bottom layer #4, the resonance wavelengths of meta-atoms at each layer are tuned around 12.3 mm, 11.43 mm, 11.2 mm, and 10.4 mm, respectively. the total length of the simulated region, lms, is 210 μm.