Coupling Schemes in Terahertz Planar Metamaterials

Figure 1

Optical microscope images of the fabricated metamaterial samples. (a) In the unit cell with symmetric gap-to-gap coupled SRRs, the separation is either (a) 10 μm (MM1) or (b) 2 μm (MM2). (c) The asymmetric SRRs with one gap displaced from the center (MM3) and (d) the SRR array where both gaps are displaced in the opposite direction from the center (MM4). The dimensions of the unit cells and their features are indicated in the figure. The unit cell periodicity for all the metamaterial samples is identical.