Anyone knows how the laser lighting works on stage. The effect looks like the light beam has a start/end and can move, similar to a lightsaber. e.g. around -44m

Anyone knows how the laser lighting works on stage. The effect looks like the light beam has a start/end and can move, similar to a lightsaber. e.g. around -44minutes https://www.youtube.com/watch?v=OZbVixSkgu0 https://www.youtube.com/watch?v=OZbVixSkgu0