You're missing two things about that, the first is that the laser is shining through a non-absolute vacuum, and that the article is talking about the laser causing redistribution of energies of electrons already present in that non-absolute vacuum, the other is that it's talking about the result of calculations on a model, not the result of an actual physical experiment. It's not even certain the universe behaves as they describe.
Originally Posted by vincecate
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain