Photon lasers have been around for a while, but they used to be ginormous. The first ones filled the whole screen and were made chiefly of fan panels and uranium.
plead-for-destruction actually i made one that burns quite well using 17 pixels (10 of those pixels are life pixels to heat cuz you cant have them as one pixel, so just a pointing laser would be 7 pixels
P.S. this small laser is very weak(can't have things shoot back(unless its not a on off thing, then it'll be strong))