Figure 4
From: Hyperuniform disordered terahertz quantum cascade laser

Far-field analysis of the device driven in the same operating conditions of Fig. 3(a).
The far-fields (a) and (b) corresponds to a current of 155 mA and 197 mA flowing through the device, respectively. The intensity in the far-fields (a) and (c) have been averaged along the z-direction, in order to compare the measured far-field profiles (c) with the simulated ones (d).