5.5w 450nm blue laser very week | Laser Pointer Forums ...
If it' a bit purplish, it' 405nm violet - forget 5.5 Watts, as Blu-ray Disc 405nm laser diode have only recently hit 2 Watts in response to increasing writing speed of BD-R, the only way you can get that much light is by using Nichia NUBM44 450nm laser diode or equivalent. Otherwise, if it' pure blue, check the module - especially the size ...