Figure 4

(a) The estimated and measured optical reflectivities of the plasmonic nanoantennas as a function of the wavelength. (b) The estimated optical absorption in the top GaAs layer and the measured photocurrent in the terahertz source prototype.

(a) The estimated and measured optical reflectivities of the plasmonic nanoantennas as a function of the wavelength. (b) The estimated optical absorption in the top GaAs layer and the measured photocurrent in the terahertz source prototype.