
A LASER show?
The Big Bang Theory Season 11, Episode 14

I'm trying to see how long it takes
a 500-kilowatt oxygen-iodine LASER...
The Big Bang Theory Season 1, Episode 3

"You accidentally stare at a helium-argon
LASER. Lose one turn and a retina."
The Big Bang Theory Season 3, Episode 7

Sheldon, I was up all night
using the new free-electron LASER...
The Big Bang Theory Season 2, Episode 5

The europium LASER
is so cool.
The Big Bang Theory Season 12, Episode 7