Fig. 4
From: Compact and ultra-efficient broadband plasmonic terahertz field detector
On-chip detector performance. a The modulation efficiency as a function of the nonlinear interaction length is presented for several devices (with a slot width of the PPS of 75 or 100 nm, respectively). For comparison, we show the modulation efficiency of the 3D antenna and a ZnTe crystal of 1 mm length. The rhombus shapes represent extrapolated values from the detection efficiency at 1 mm length. b The modulation efficiency per unit length of interaction distance is represented as a function of the nonlinear detection volume in the different platforms.
