@Jasonsith
How many properties have ectoplasm worked like laser before?
Sorry for not answering this sooner.
It's the Ghosts Ray. Ghosts can use there ectoplasmic energy to create light/lasers.
In the episode "13", Danny uses the Ghost Ray on
Shadow who's darkness and it's super effective as Shadow's weakness is light. When Danny blasts Shadow with two Ghost Rays, Shadow gets dizzy and Danny says "So bright light weakens it" and this is confirmed a minute later when the flash from a movie projector burns Shadow.
In the episode "Lucky in Love", Danny faces of against Shadow again and this time he uses a magnifying glass and shots a Ghost Ray through it and it allows the beam to expand and cover Shadow's entire body. It didn't even damage the magnifying lens.
In the episode "Boxed Up Fury", Danny uses the Ghost Ray on a cyclops and hits it in the eye. After it runs off in pain, Danny shouts "Better get some sunglasses". This line is Danny stating that the cyclops would be safe if it had sunglasses to protect it because sunglasses protect your eyes from light.
Butch Hartman also states that Danny uses the ectoplasmic energy that glows to "create light". This fits the Ghost Ray since Danny's hand glows before he shots the Ghost Ray.
Finally we have seen Danny actually create flashes of light like in the episode "Double Cross My Heart", When the Guys in White are attacking Danny, he creates a big ball of ectoplasm that explodes but instead of causing damage, it created an omnidirectional blinding flash of light. So creating a legit laser attack isn't impossible.
That's pretty much why the Ghost Ray is considered a laser. Also it leaves burn marks and vaporizes plus they can't
naturally be interacted with by normal people. Hope that answers your question.