Re: 2 140mW 650nm Red High Power Sony Burn Laser D
Look at the top of this page, and click on the StoneTek Electronics link for 16x diodes.
Otherwise, you can harvest your own 20x open can diodes from Sony NEC Optiarc 719x (x=1, 2, 3) DVD drives, at around $25 or so.. You just have to take it appart and carefully remove the diode. The open cans can give you 250-300mW or more, depending on the lens type and heatsinking.
They are currently the most powerfull ones available for cheap.
But don't get the Sony NEC Optiarc 720x! That is a flat square diode, that is very hard to turn into a pointer, even if it is powerfull.
The 8x should still make nice lasers, but i definatelly wouldn't buy them at $20, when you can get 300mW for a few dollars more and a little work.