Lol, anytime you use a prism you will get a reference to Pink Floyd. Thanks Benm.
Yeah, i know... some things are just so iconic and etched into memory you'll never get away with using them again
If you showed that logo without the letters to anyone one the street (over 30 perhaps) they'll say pink floyd - that's just the way it is.
Otherwise it does look nice, but perhaps not really fit for what lasers are all about: it shows white light being split into a rainbow, while monochomatic light is a key thing with lasers. On the other had it is physically more correct than the current logo where the prism changes the direction of all colours equally and not even in the proper path either.
I like the one Ears and Eggs pointed out, though it somehow reminds me of the logo used by 'the X files' at some point, the direct relation is not that strong.
Logo's looking a bit like other ones aren't always bad thing though, especially if they are used for totally unrelated things.
Sometimes it just happens, often not even on purpose, like how the livery on Virgin aircraft looked very much like that on Air Asia at some point. Both are airlines, but i don't believe there are (m)any places that a serviced by both companies so it may not be a problem.