Figure 2
From: Volume Fabrication of Quantum Cascade Lasers on 200 mm-CMOS pilot line

Current density thresholds: (a) average and standard deviation values with the length and the width (225 dies per geometry) for one typical 200 mm-wafer at 7.4 µm emission – (b) average and standard deviation values with width (orange circles: wafer 1, blue circles: wafer 2) – (c) average and standard deviation values as a function of length for the two silicon wafers (orange circles) and for lasers made on InP (green stars).