Just like allthatwhichis said. It is fluorescing and the product is a white color. The same thing will happen if you take a 405nm laser and shine it at anything white (with detergent in it) white clothing, white paper..... it will fluoresce bright blue, I would say in the 475nm ~ 490nm range. This is exactly how dye lasers work. There is a stream of optical dye that uses another laser (typically argon or nitrogen) that pumps the dye. It fluoresces in between a HR and OC thereby turning the fluorescing dye into a lasing medium.
Last edited by absolom7691; 05-11-2011 at 15:05.
Reason: spelling
If you're the smartest person in the room, then you're in the wrong room.