If I don't understand it, it obviously can't exist. Otherwise I'd have to admit I was ignorant. Is this your line of thinking?
btw, what do you think of these videos?
http://www.youtube.com/watch?v=jVRh4U2BlhQ
http://www.youtube.com/watch?v=vaysznxCBzA
To respond to your earlier comment.... the beam did not heat air because it was phase conjugated