No, but that was what came to mind instantly when I saw the word. The light-beam uses sound to me like afterthoughts - "Isn't this a clever word to use to mean light output or transmission." Retronyms of the world, unite!

Edit: a quick Googol search shows only entries for beamage referring to lighting, or to weight of animal at point of sale, which we've already discussed above, plus one fanciful application to Scotty's final transporter trip...