Now see, what's this here in the schematic,
a LASER array?
The Big Bang Theory Season 1, Episode 12
...for one
of your godless LASER machines.
The Big Bang Theory Season 3, Episode 2
And this is a high-pulse LASER
with a BBO crystal.
The Big Bang Theory Season 12, Episode 22
Sheldon, I told you, I only have access
to the free-electron LASER at night.
The Big Bang Theory Season 2, Episode 5
for a pretty cool
europium-doped LASER,
The Big Bang Theory Season 12, Episode 7