Fig. 8
Measured sensor beam programming with subwavelength reconfiguration. This is measured with varying angles of incidence for two polarizations across 0.1–1.0 THz. a Measured optimized performance as the incidence angle is varied for two polarizations across 0.10–1.0 THz. For both Eθ and Eφ, the sensitivity can be enhanced significantly by 5–12 times across 0.10–1.0 THz. The horizontal plane shows the instantaneous beam configuration when optimized for reception across the various angles of incidence (45°, 0° and −45°). As can be seen, the reprogramming of the detector states redistributes the surface current to effectively tilt the beam toward the desired angles of incidence. The vertical plane shows the overall responsivitiy enhancement as a result of the reconfiguration when compared against the optimal normal incident state. b This is also shown in the significant enhancement with reprogramming as the polarization is switched across Eθ to Eφ across the range
