Osram set for green diode ramp in 2012

[qumefox]

This is that what i mean:


Maybe yes, they have tinted the can cut part (it looks more painted with blue ink, than photoshopped), but it looks strange the same ..... it looks almost "wet" ..... anyway, with some of the photorealistic rendering engines that are available actually, also this is possible ..... for this i said i'm not sure.

Maybe.. But for one.. this appears to be a TO38 package and not a TO18 package... and looking at other osram TO38 diodes, they have flat sides identical to this one.

And I still think the can was just photoshopped with a blue tint to spice up the image for press release purposes. I imagine the green light is a result of digital enhancement as well. I think the wet look around the cut edge is just due to the metal being really shiny after being cut.

If the entire pic is a render, they went to a lot of trouble, but I still think it's just a pic of a generic diode (possibly not even a green) that's had the can cut off, that was photoshopped to look more interesting, then released to the press/public.


Meatball's pic definitely looks like CG though heh. And that diode has one hell of a low divergence on the slow axis to be that narrow of a line with no focusing lens after all if it's real.

 

[Xer0]

Germany <3 still one of the best research is made here

 

[joeyss]

So are we looking at another possible diode craze like the 445nm one sometime in 2012/2013?

 

[aryntha]

So are we looking at another possible diode craze like the 445nm one sometime in 2012/2013?

Hopefully. But maybe they won't be 2W, so 3/4 of the guys who came in on the 445 rush won't care about them at all because they won't blow a hole through their neighbor's dog.

 

[HIMNL9]

^ Uhm, why one must want to blow a hole in the neighbor dog ?



..... except if the dog is this one, i mean

(but, really, if your neighbor dog is that one, i may be more preoccupied from the neighbor itself, than from the dog :crackup: :na

 

[Flaminpyro]

Interesting how it looks like there is NO gold in there even the wire leads to the die look like aluminum.
As for the big the knotch on the side it can be filled with heatsink compound !

 

[blrock]

So exciting!!!

Our green DPSS will become like the old green argons..It's just so unfortunate that the beam quality keeps decreasing...Argon>DPSS>Diode

 

[Elektrotechniker]

I hope these diodes will be affordable :shhh:

 

[qumefox]

I hope these diodes will be affordable :shhh:

Depends on how you define affordable. If they're used in devices similar to the casio xj-1x0 projectors where they have lots of diodes, they will be. If they end up in extremely mass produced devices like optical disc burners (they won't be in burners, its just a product example), they will be.. If they're singular diodes in $1000 devices.. then no.. they probably won't meet your definition of affordable.

It all depends on how they end up on the market.

 

[joeyss]

You do realize these will probably also make their way into LaserTVs aswell and LaserTVs should get cheaper in a few years. I mean a blu-ray player was $3800 back in 2003 and a Blu ray diode alone was 3k back in 1999/2000. This is just another thing that will get cheaper in a few years.

 

[flogged]

Is this a clue as to the operating mode?

Optics.org - 'Forgotten' laser material aimed at projector use

That's quite the 'wide' beam.

It is such a pretty color though!

That's a good link. It appears the problem with pushing the GaN technology (used to make blu-ray and 445nm lasers) is it quickly becomes very inefficient as you change the recipe to make longer wavelengths (going from blue to green). This is not good for battery operated devices - short lifespan. So you end up with something not much better than DPSS.

So now the researchers are back to looking at 'II-VI semiconductor materials'. Before GaN came on the scene this material was thought to be the way to realize green/blue laser diodes. Over 10 years ago Sony developed a ~530nm laser diode (NOT dpss) using this material. I used to have a link to a page showing this amazing laser diode. Unfortunately they never could realize a long lifespan - it wasn't much more than 10 hours or so. Well, now the researchers are back trying to improve the lifespan of this fragile xtal lattice. There's a large potential market for these devices.

So that's the problem now - green GaN requires too high a current to lase, and the more exotic II-IV (BeZnCdSe) lattice is not robust enough. Perhaps more money is being spent on research now..