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ArcticMyst Security by Avery

Possible lowering of exotic diode prices?

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Sep 5, 2013
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Hey all,

I was curious and thought I would ask if anyone believes LPF'ers will(which could be a couple years) a lowering of prices of exotic diodes, for example 473, 488 etc...

I know for now there isn't a demand but it's always fun to imagine owning a 488 handheld without the need for sensitive crystals. Do you believe with all the advancements in technology that previously rare, untouched and expensive diodes will become cheaper, more common and more available to consumers?

-Alex
 





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May 15, 2012
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I believe that there will come a time when there are only 4 cheap visible wavelengths to choose from after that time. R, G, B, Y. But they won't be the wavelengths we have today. They'll have wavelengths optimized for the color of laser TVs and light bulbs of the future. I have a strong feeling that 532 and 473 DPSS lasers will become very expensive and scarce. 660 will be gone because who needs DVDs 10 years from now? But you will have something close to 470, 530, and 640. But I don't think I'll ever get to have a beautiful ~490/500 or 430, and it makes me si'ad :c
 

rhd

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I think 480 range diodes will become within reasonable reach. Perhaps not $20, but I think we'll see them in the sub thousand range. Even though there's no real mainstream demand, they've gone from $5k to $1250 or so in the past couple years without any particular increase in mainstream demand, so why wouldn't that continue?

I agree that we'll see the reds center more towards 640 ish.

I don't think we'll see any particularly noteworthy changes on the yellow front. There's no push for yellow diodes, and I don't think anyone is devoting any serious resources into developing them. Yellow DPSS isn't likely to see any earth shattering change in demand.

Green diodes will become cheaper, and we might even get some that with over driving can be pushed to wavelengths above 532.

If there's any exotic diode that we don't really have access today, that I think we might gain access to, it's sub 405 UV. But that's just gut and wishful thinking.
 
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Jul 16, 2010
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I am super excited for diodes with wavelengths less than 405nm. UV lasers are just cool :) that and orange :D
 
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Actually, has anyone tried to recreate orange in RGB? You know how ugly it looks? Sharp made a TV called Aquios which uses RGBY. I have one in my house. The yellows and oranges are sooo much better. So I'm not sure if laser tvs will have RGBY/RGBO, but some high-end models probably will ;]
 
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The problem with RGBY is that the color gamut is not especially impacted for your average person. People who can distinguish the shades between green and red will notice the difference, but most people will not see it.

There are actually a set of people who have an extra receptor in this range, but it is only a small set of people, and they are likely the only people to benefit from RGBY tech.
 
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I would like to see the development of diodes in the 420-430nm range
 
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I agree about the UV. A better EEPROM
eraser and glue curer would be nice, but
until then, there's always a nitrogen TEA
laser with a high rep rate.
 
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Jul 12, 2013
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it's always fun to imagine owning a 488 handheld without the need for sensitive crystals
Get an argon turn the psu and some kind of large battery into a backpack, and then mod handles on the head so it can be held from the hip like a large weapon

Problem solved​

know you can shower the world with your cyan photons, and look good doing it too!
 
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Are you sure? The very first ones posted here (twin builds about a year before the diodes became commercial) were actually lower WL, 510nm if I remember right.
 
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edit:
http://www.laserfocusworld.com/articles/print/volume-48/issue-11/features/nitride-diode-sources-grow-greener.html
http://www.laserfocusworld.com/articles/print/volume-46/issue-12/features/photonic-frontiers-shortwave-laser-diodes-the-quest-for-practical-green-laser-diodes.html

two interesting reads. However, as I find these again, I remember discussing with someone when I posted these before (don't remember who) as to whether the first article is talking about laser diodes or just LED's. The second paragraph is what I refer too. They begin talking about laser diodes, but then it is a little hazy as to whether they talk about green laser diodes or otherwise, as they then just say "diodes." Thoughts? :)
 
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Interesting. I think they're indeed talking about laser diodes. Something must have gone wrong with those early prototypes, else we'd have 530-535nm diodes by now - they're preferred by the projector/display guys AFAIK.
 
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Interesting. I think they're indeed talking about laser diodes. Something must have gone wrong with those early prototypes, else we'd have 530-535nm diodes by now - they're preferred by the projector/display guys AFAIK.

Or they weren't stable enough, high enough possible output, etc...several factors could have been in play. But you are right, they would have been better for color mixing, so it seems like we would have seen at least some variation of them by now (even if it was only a 20mW diode).
 
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I'm sure we'll see some of those eventually. Not so sure I'll enjoy the change, as I tend to prefer the 520nm range :p
 
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Well, in light of that information, it
appears that the reason orange and yellow
diodes aren't cheap (extant?) right now is
because a semiconductor with the right
bandgap has yet to be discovered. Good
information, +2
 




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