Figure 2 | Scientific Reports

Figure 2

From: Broadband terahertz absorber based on multi-band continuous plasmon resonances in geometrically gradient dielectric-loaded graphene plasmon structure

Figure 2

Broadband absorption based on multi-band continuous plasmon resonances. (a) The absorption spectrum under normal incident wave with the electric field parallel to x-axis. Typical distributions of the z component of the electric field at the distance 50 nm above the interface between the graphene and the elliptic dielectric cylinders at (b) 1.57 THz, (c) 1.67 THz, (d) 1.75 THz, (e) 1.80 THz, (f) 1.84 THz, (g) 1.95 THz, (h) 2.03 THz, (i) 2.08 THz, (j) 2.13 THz, (k) 2.32 THz, (l) 2.50 THz, (m) 2.60 THz, (n) 2.70 THz, (o) 2.89 THz, (p) 2.99 THz, (q) 3.07 THz, respectively. (r) Distribution of the z component of the electric field on the central cutting x-z plane at 3.07 THz.

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