Controlling Terahertz Surface Plasmon Properties on a Periodically Structured Silicon Surface

Figure 3

Amplitude transmission across the silicon substrate patterned with subwavelength scale vertical rectangular structures. (a) Measured and numerically simulated frequency domain spectra for the parameters: length “” = 300 µm, width “” = 200 µm, lattice constant “” = “” = 400 µm, and height “” = 100 µm. (b) Frequency domain spectra correspond to the parameters: “” = 300 µm, “” = 200 µm, “” = “” = 400 µm, and height “” = 300 µm.

(a)

(b)