The LIDAR illuminator includes a plurality of laser sources, each laser source including an electrical input that receives a modulated drive signal causing each of the plurality of laser sources to generate an optical beam. The controller has a plurality of electrical outputs, each of the plurality of electrical outputs is connected to an electrical input of each laser source of the plurality of laser sources, and the controller is configured to: a plurality of optical beams in which the plurality of laser sources form a combined optical beam Generates a plurality of driving modulated signals for generating The peak optical energy of the combined optical beam within the measurement aperture at the measurement distance is less than the desired value.
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