Laseractive came out on Aug. 20, 1993 in Japan.
I don't know if I have ever seen a firm release date for the US system, but October 1993 is pretty widely believed to be the release date of the CLD A100, and N10 and S10 PACs in the U.S.
**EDIT** - Instead of going off of memory, I should've done a 3 second Google search. If Wikipedia is to be believed, the U.S. system came out on Sept. 13, 1993.