Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

New York Skating Lessons | Buy Site Supporter Role (remove some ads) | LPF Donations

Links below open in new window

NICHIA DIODES






Well, it says CW operation at 120mW. PHR diodes are rated for 60mW. 6x diodes are a little less than twice as strong as PHR's, I think. So, by my sloppy logic, I'm going to assume this is a 6x diode. But I'm probably wrong.

-Mark
 
Wow, nice finds!

But these datasheets don't belong to any diodes we know.

The last one is a 445nm diode. We don't have that (yet). The middle one is a 200-250mW CW diode, that's like the 12x! But it's multimode.. Too bad. We won't see that in single mode for a long time. But once we do, it will be putting out 500mW or more, if it's like other 405nm's... ;)

The first one is a 120-140mW diode, also higher power than anything we have so far. And this one has a pinout like reds, with a photo diode built in. So it doesn't match anything.


The closest is the 100-120mW Nichia diode i got from Susie, and that one seems to be simply amazing. Can you find a datasheet for that - LD405120H7J? It would be simply awesome to have a full datasheet!


The 120-140mW could probably force 300mW through a plastic lens easily for a while! With a drastically reduced lifetime of course, but still.. I don't even want to think about the 200-250mW CW rated one.. None of the diodes we have so far can even survive it's CW rating for too long! That diode is gonna be sick! :o
 
IgorT said:
Wow, nice finds!
Click to expand...

I thought you were already aware of those, else, i"d have mentioned them to you ages ago. They are the "original" 405nm diodes, from the manufacturer that has an amber laser diode decorating their lobby (according to the bio I read, anyhow). That 445nm diode is already putting out 500mW, isn't it? Usually, though, with Nichia, you have to sell your soul to them in order to get the chance to pay $2K for an engineering sample with no guarantees. Nice to hear Susie came through on the 120-140mW ones. Perhaps she can be convinced to carry the 445nm and 488nm diodes? :o
 
I just rechecked, and the 500mW laser diode is the engineering sample, while the one mentioned at the top of the thread is marketed.

They also supply 6W modules at 400-410nm, although I daren't think about the price...
 
suiraM said:
Nice to hear Susie came through on the 120-140mW ones. Perhaps she can be convinced to carry the 445nm and 488nm diodes?  :o
Click to expand...

The Nichia i got is 100mW CW (120mW CW = absolute max rating, pulsed = 180-200mW)

I doubt she can get just any Nichia diode. She didn't get the sample from Nichia, but from a chinese laser show manufacturer. They use these diodes in their scanners, i guess. Susie stumbled upon it by pure luck. They were reluctant to sell them at all. Not sure if there will be more too soon.
 
How much is she charging?

The additional output power, plus some beam joining, seems like a candidate to replace SHG as a means of obtaining high power at short wavelengths. It might also be good for the reference we discussed earlier. I will have to check if I can beat my machine shop a bit. Maybe something sensible can come out of this, apart from brighter beams.
 
Hehe, you and your crazy ideas.. ;)


She is not selling them yet. I believe she is waiting for final test results. Otherwise, the price is listed as $75, but she doesn't have them, cos she can only buy 100 at once.

I think the best way to get them would be a GB. I wouldn't want Susie re-packaging ESD sensitive components. I need to explain the dangers to her. She didn't know you're not supposed to touch diodes, which is why i requested the sample to be packaged and sealed by the laser show factory she got it from.


Otherwise, look at the plots i just made in the other thread. I don't know if this diode is better than the 6x. The only real difference is the beam profile. How much it can handle, i don't know yet. But i'm working on finding out...
 
A few days ago I sent a message to Nichia basically asking them about the 445nm diodes (when they will be in mass production, if they will sell in GB-like amounts) - I will post on here if i get a response.
 
charlie bruce said:
A few days ago I sent a message to Nichia basically asking them about the 445nm diodes (when they will be in mass production, if they will sell in GB-like amounts) - I will post on here if i get a response.
Click to expand...

Have you heard anything yet? I really want a dark blue/indigo laser.
 
As soon as those indigo diodes come out, I'm going to be all over them like rubbernecks on an accident!

-Mark
 
Laser Ben said:
These are all industrial products and will not end up in a bluray drive.
Click to expand...

Much of the research that has been conducted into actual blue and green laser diodes (as opposed to the violet blu-ray) is directed at developing low-cost diodes to accompany the already common red diode in a RGB Laser Television projection system. Once Laser TVs become commonplace some years from now, there will be new sources for these items.
 
Still no reply - but then again, who does reply in holidays? If I get no response within a week or so I will ask again. Stupid email redirection may have caused issues - when I get the chance, I'm quitting servage so fast their stupid heads spin.... all for the sake of having a "professional looking" email address.
 
You must log in or register to reply here.


Back
Top