- Feb 27, 2011
So what is the deal with the M vs H? Has anyone proven them to be different or a better bin on the same diode?
Yes. Every single diode is tested individually. Likely multiple times.Are we sure every diode is tested? I feel like it wouldn't be required for such an efficient process.
The >2W @ 1.62A in my sig came out of an H series projector... anecdotal for sure - but that is an efficient diode! And I've got 3 or 4 :thinking: more!Hmmm, so it's possible then, that the H1600 could be a more efficient bin of the same diode? It would match up with the numbers.
I agree. By comparison, I have a late model A140v diode that is doing 2.3 watts with a G2 lens at only 1.44amps. Binning department was sleeping on that one - :thinking:The H diode I have is doing 2.168W at 1.8A with a G1 lens.
So I'd say the H series is a crap shoot as much as the M series are.
Nichia 's Shuji Nakamura: Dream of the Blue Laser DiodeI remember reading about how huge efficiency gains were reported by using a very difficult to achieve crystal of GaN as substrate. Something to do with how it is hard to get it to crystallize homogeneously along that plane, and how substrates for C-plane GaN are ridiculously small and expensive.