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Figure 1

From: Dual-Wavelength Terahertz Metasurfaces with Independent Phase and Amplitude Control at Each Wavelength

Figure 1

(a) Schematic of a building block in the designed dual-wavelength achromatic metasurface. It is composed of a top layer (CSRR) and a bottom ground layer (MCCSRR) separated by a polyimide spacer; (b,c) represent the CCSRR with a circular hole in the middle (MCCSRR) and CSRR, respectively. The opening angle, width, orientation with respect to x-axis and outer radius of CSRR (CCSRR) are α (α1), w (w1), θ (θ1) and r (r1), respectively. The radius for the circular hole in (b) is rc = r + w + rp. In the simulations, θ and θ1 are set as either 45° or −45°.

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