Beam divergence has to do with your output aperture. The smaller the hole the laser light comes out of, the more it spreads. This is a big, several kilometer

Beam divergence has to do with your output aperture. The smaller the hole the laser light comes out of, the more it spreads. This is a big, several kilometer phased array, which has an effective hole size of a few kilometers. As a result, divergence is less.