Fig. 7
Measurement results for optimized responsivity and corresponding NEP across 0.1–1.0 THz for two incidence angles at a 0° and b 45°, and two polarizations (Eθ and Eφ). The figure shows 8.9 and 4.5 times reduction in NEP at 0.86 THz and at 0.99 THz for broadside incidence and 6.2 times reduction in NEP for 45° incidence at 0.87 THz. The green line represents the sensor performance as it is optimized for each incident frequency. The red line represents the performance across frequency for a fixed optimal configuration at 0.4 THz. The 2D color plots represent the contribution of power incident absorbed across the detector array across the optimized states between 0.1-1.0 THz. The figure also shows four examples of optimized states for the incident field impinging at two angles of incidence at 0.26 THz and 0.9 THz
