Fig. 5
From: Ultra-broadband actively tunable terahertz modulator based on multi-stacked metamaterial
(a) Electric field distributions at four frequencies: F1 = 0.24 THz, F2 = 1.05 THz, F3 = 1.34 THz, and F4 = 1.90 THz. (b) Cross-sectional plane of the field distribution (along the x–z plane cutting through the edge of the resonators). (c–f) Side view of the MM and field distributions of the excited resonators at the four frequencies, illustrating coupling between the resonators.
