Oh dear, not another of these fraudulent kipkay videos. The two laser diodes shown in this video will not proiduce anything like their rated power output when powered from two AAA cells, because the current supply capability of said cells is far too low to provide the regulator board with enough current to properly power the diodes so they'll perform at anything like their rated output.
You need a couple of hundred milliwatts to power a single diode laser so that it'll light a match or burst a balloon. The typical current rating of even an alkaline AAA battery is 10mA for continuous discharge. 3 volts (1.5 + 1.5) at 10mA gives 30mW at 100% efficiency, and there are no boost converters that achieve 100% efficiency.

Those diodes might well be able to light matches and burst balloons, but they won't be able to do it when powered by two AAA batteries.