Fig. 3: Mode scaling and detected power.
From: Topological quantum cascade laser with Dirac-scaled valley edge modes
a–c Simulated normalized E-field of VH mode in devices with DDirac = 0, 3 and 6. The fabricated device of the respective simulation is positioned on the right with a zoom-in diagrams showing details of a section of its waveguide. d Experimentally measured LIV of the respective device. The peak output power is not high because our THz QCL wafer is not of high performance (see Supplementary Fig. 10 in Supplementary Materials). Here, devices with different DDirac are plotted in their respective color, as denoted by the inset. e Comparison of peak power detected from the respective devices in part d of the figure with the power detected from DDirac = 0 normalized as 1.
