I've never seen the laser on this one, but if you could open it up and email me clear hi-res pictures of the actual laser, I could probably identify it for you.
The only lasers which are really no longer available anywhere, are those in the early BeoCenter 8500, 9000, and 9500. All units after that generation have easily replaceable lasers, not necessarily from B&O.
Once you know what to look for, you can source it from the many ebay vendors offering the correct part.
my email: yachadm AT gmail DAAT com
Menahem
Learn from the mistakes of others - you'll not live long enough to make them all yourself!