Fig. 8: Weighting potentials.
From: The emergence of macroscopic currents in photoconductive sampling of optical fields

a Ramo–Shockley weighting potentials for an electrode distance D = 100 μm and different ratios of the distance D to the electrode radius R for cylindrical electrodes A (blue) and B (red). b Radially-resolved weighting potential for the left electrode for D/R = 6.