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50kW class laser.
Another source claims 1um wavelength with individual 1.5kW lasers in a hex pattern — unclear if it’s a phased array (would be awesome) or just trained on the same target (source mentions they are “combined using a mirror” so probably the latter).
Sounds like maybe high power YAG?
It’s on https://www.thefarside.com/ today as one of the “Selections of classic The Far Side comics.” Comic says ©1984, but doesn’t give a specific date (an image on reddit suggests 4/6/84).