“…Gain switched diode lasers integrated with tailored electronic drivers, generating high pulse power with a few nanoseconds long current pulses with amplitudes up to 1 kA, are ideal candidates for such Li-DAR systems [3,4]. The commercialization of these diode lasers necessitates a further increase in detection range and, thus, higher pulse power and a minimization of the required pulse current amplitudes, which can be achieved by epitaxially stacking multiple active regions, separated by tunnel junctions [5][6][7][8][9]. In this way, a nearly N-fold increase of optical power at constant current has been reported, where N is the number of stacked active regions.…”