200 W pulse power from a distributed Bragg reflector broad area laser with multiple active regions for LiDAR applications

We present broad area distributed Bragg reflector lasers with up to five active regions epitaxially stacked in a common waveguide emitting nanosecond pulses around 905nm for LIDAR. Optimized for pulsed operation and implementation of a surface Bragg grating, the diode laser emits in a higher order vertical mode. 2mm long diode lasers with five active regions and a 200µm wide current aperture integrated in an inhouse high pulse current electronic driver provide pulse powers >200W at slightly >100A in 10ns long pulses. The emission spectrum features a spectral bandwidth of <0.3nm and a temperature-related shift of <70pm/K.