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Stacking of multiple laser junctions within one device structure enables significantly higher output powers per mm2 device size than in conventional diode lasers. This technology makes edge emitting lasers (EEL) and VCSEL favorable for LiDAR applications. In this paper, we show our current performance of multi-junction EEL and VCSEL for industrial and automotive LiDAR applications. We demonstrate output power densities exceeding 1.2 kW/mm2 from a VCSEL array as well as output powers of 285 W from an EEL with a footprint of only 400x600 μm2. In addition, we propose a solution for the spectral shift in EEL using a wavelength stabilization technology achieving 0.04 nm/K on average in a temperature range of -35°C to 105°C.
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