Sheldon, I told you, I only have access
to the free-electron LASER at night.
The Big Bang Theory Season 2, Episode 5
...for one
of your godless LASER machines.
The Big Bang Theory Season 3, Episode 2
Leonard's just a dime store
LASER jockey.
The Big Bang Theory Season 5, Episode 11
I had to take her to the LASER clinic.
The Big Bang Theory Season 2, Episode 16
And this is a high-pulse LASER
with a BBO crystal.
The Big Bang Theory Season 12, Episode 22