Figure 3
From: Subwavelength InSb-based Slot wavguides for THz transport: concept and practical implementations

(a) Dependences of modal properties of fundamental SPPs mode at frequency of 1 THz for different width w and temperature T. Normalized electric field abs(Ey) profiles for (b) w = 5 μm and (c) w = 20 μm at frequency of 1 THz.