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Mother of all red diodes

astralist

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Hmmm..
Closest I could find is ML1467, according to OP mention of 4.5A threshold current.
But it has a whole different package

EDIT:
It seems OP didn't install a collimating lens, or is it a blue square lens in front of LD, that is actually a collimating lens? :eek::eek::eek:
 
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Merpie101

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doubt its a collimating lense, it didnt have a diode window maybe its a thing to protect the die?
 

Alaskan

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That's no laser, it's a red projector source. How do I know? No laser source would be built like that, nope! I don't believe it.
 

DashApple

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The design doesn't look like an led , most projector leds emit from a large surface area die , this doesn't have that and you can see in the picture a line and desing similar to can diodes so id say its probably multiple laser emitters side by side as they do with 808nm bars ,

The easiest way to prove that would be run the diode just at its threshold and look at the emitter area and you will see the single emitters if that's how it made
 
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Alaskan

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I just re-read what he said, the subject title didn't say laser, but further in the text I see the word, so perhaps it is, as a custom made laser where more than one die is used it very well could be 10 watts output, but I've never seen that kind of configuration used for a laser. I can't see the pattern well enough to get an idea if more than one die is used, but I have a 15 watt red LED which has a square output producing a spot shaped much like that, this is why I think it is an LED. It's not April 1st, so is he having fun with us or truth? I don't know. However, I do not see a collimation lens, high power LED's have an output just like that and can be without a lens, only a window as that appears to have.

OK, spill the beans, is it an LED or?
 
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RedCowboy

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It needs to be bigger, and redder, call me old school but I love 650nm, that's red, not orange.
Yes I know the orange is more visible per watt, but just think about 15-20 watts of 650nm, Ohh Yeaa!
 

Merpie101

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It needs to be bigger, and redder, call me old school but I love 650nm, that's red, not orange.
Yes I know the orange is more visible per watt, but just think about 15-20 watts of 650nm, Ohh Yeaa!
you are redcowboy after all :)

i doubt 638 is that much noticeably orange but i guess ill have to wait for my dtr module to come in
 
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RedCowboy

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638nm is nice and visible and the brightness can take away from a deep red color, but unless you hold a 638 and 650 side by side it shouldn't bother you, and you will have more visibility with 638 than 650m, I just love a deep red.
 

Rivem

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Pretty sure that's a laser guys. If you look at the emitter, it's a single edge-on silicon die. There aren't any LEDs that would emit from the edge like that. The die is really long though, so question is how many emitters and what the optic on the front is doing.
 

Encap

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Is odd/unusual that we have not heard anything more from the OP "grenadier".

Why did he make the original post?

Maybe he will respond with some details or specs on his 635nm light to clarify what it is and what it's origin and original purpose was.

"grenadier" did mention that he had a large red diode with picture of same diode-- back in July---at the time he said his spectroscope said it was outputting at 650nm
see: http://laserpointerforums.com/f50/thermal-sensitivity-red-diodes-100853.html
 
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diachi

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I've never seen an LED packaged like that, so I'd go with LD.



Just because you can't see the beam doesn't mean it isn't there, easy enough for it to be overpowered by splash in the room if it's uncollimated.
 

paul1598419

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It does look like a whopping LD with a nice heat sink attached at the time of manufacture.
 

diachi

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It does look like a whopping LD with a nice heat sink attached at the time of manufacture.

That's my thinking, I've seen similar packages before for other LDs. Never for an LD.

Not to mention the position of the chip, an LED that large would be emitting for a large surface area, not the edge of the chip like an LD. Meaning that the chip would be rotated 90° so that the larger top surface of the chip is facing out, in the case of an LED.

Interested in seeing more, looks like a massively beefy LD. Wonder what the beam specs are like...
 




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