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Mystery diode?

laserwanabe

laserwanabe

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I harvested a diode from a 'mysterious' sled and the diode has 4 pins out. I would explain why the extraction was a little more difficult, and i searched for 4 pin diodes but cant really figure it out. I also checked sam's laser faq and didn't find anything helpful for this diode.

What type of diode is this and what is the pin out?
 





diachi

diachi

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moond0ggie said:
Its probably an IR diode, 808nm
Click to expand...

CD diodes are about 790nm .

It might be a red and IR diode, so the case will be negative ( touch the brass looking bit with the negative ), and any of the pins with a black ring around the bottom will be a positive. One of the pins will be a photo diode, the others may be an IR laser and a red Laser.

-Adam
 
RA_pierce

RA_pierce

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moond0ggie said:
Its probably an IR diode, 808nm
Click to expand...

DVD/CD drives use 780nm NIR.
808 diodes are for pump diodes in DPSS green (and blue?) laser systems.

The pins are probably:

one for case
one for 650nm red
one for 780nm NIR
one for photodiode

EDIT: The power levels depend on the type of drive. If it's DVD burner then you can expect maybe a +100mW red and a ~80mW NIR.
 
diachi

diachi

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RA_pierce said:
[quote author=moond0ggie link=1221927800/0#2 date=1221934029]Its probably an IR diode, 808nm
Click to expand...

DVD/CD drives use 780nm NIR.
808 diodes are for pump diodes in DPSS green (and blue?) laser systems.

The pins are probably:

one for case
one for 650nm red
one for 780nm NIR
one for photodiode[/quote]


Bet you to it :)

I think nearly all DPSS lasers use 808nm LDs for a pump.
 
laserwanabe

laserwanabe

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thanks for the info, unfortunately i don't have a circuit to power this diode up =\
 
VillageIdiot

VillageIdiot

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Diachi said:
[quote author=RA_pierce link=1221927800/0#4 date=1221940013][quote author=moond0ggie link=1221927800/0#2 date=1221934029]Its probably an IR diode, 808nm
Click to expand...

DVD/CD drives use 780nm NIR.
808 diodes are for pump diodes in DPSS green (and blue?) laser systems.

The pins are probably:

one for case
one for 650nm red
one for 780nm NIR
one for photodiode[/quote]


Bet you to it  :)[/quote]

'cept you were 10 nm off with the CD diode, accidental or otherwise =P
 
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