So I bought this PHR-805 HD diode OEM 405nm !!! HIGH POWER !! [PHR805] - $16.99 : StoneTek Electronics, Your Laser Parts Store, and hooked it up to this 405nm 100-300mw Laser Diode Driver Reverse Protection - eBay (item 220769098809 end time May-13-11 03:00:46 PDT), and plugged a cr123 battery...
I just built a 445nm laser, bought the diode with aixis from danglasers.com, bought the driver from ebay-
1A 1.2A 1 WATT 445nm Laser DRIVER Circuit Board 1W | eBay
Buttoned it all up, worked great.
Day later, after 18 seconds of the laser running, the beam dims about 50%. I have it running...