- Joined
- Aug 14, 2013
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I disassembled an old notebook CD-RW/DVD drive and look what I found
I'm unable to find any pictures of this type of diode module anywhere. As you can (or maybe
you can't) see this is a bit different from the other 12 pin modules floating around. I
may have to do a bit of detective work on this thing to discover the pinout. It came out of a
Samsung SN324.
UPDATE:
I have discovered the pinout using a little ingenuity and the Nikos Aravantinos method.
And here it is lasing happily on the "workbench". We have a red.
Strangely enough, I could not find an infrared diode anywhere. If there was a separate one,
it's gone out with the trash and lost forever. Even more strange, the laser diode was
producing negative voltage from the test light.
It begins to lase at around 30mA. Things start getting strange over about 60mA - mode
hopping or something. The light will "snap" into a different position over a certain current. I
didn't go much higher for fear I would burn it up. As you can see, the beam is very crappy.
If I ever decide to mount it into a host, I'll break the optics off and let it all hang out open
can style.
The camera on my iPad must be very sensitive to this wavelength. It doesn't look
anywhere near that bright to the eye. I first tried taking the picture with my Canon Rebel
XTi, but the light did not show up at all. It must be coated with something that blocks most
light at 650-660nm.
I'm unable to find any pictures of this type of diode module anywhere. As you can (or maybe
you can't) see this is a bit different from the other 12 pin modules floating around. I
may have to do a bit of detective work on this thing to discover the pinout. It came out of a
Samsung SN324.
UPDATE:
I have discovered the pinout using a little ingenuity and the Nikos Aravantinos method.
And here it is lasing happily on the "workbench". We have a red.
Strangely enough, I could not find an infrared diode anywhere. If there was a separate one,
it's gone out with the trash and lost forever. Even more strange, the laser diode was
producing negative voltage from the test light.
It begins to lase at around 30mA. Things start getting strange over about 60mA - mode
hopping or something. The light will "snap" into a different position over a certain current. I
didn't go much higher for fear I would burn it up. As you can see, the beam is very crappy.
If I ever decide to mount it into a host, I'll break the optics off and let it all hang out open
can style.
The camera on my iPad must be very sensitive to this wavelength. It doesn't look
anywhere near that bright to the eye. I first tried taking the picture with my Canon Rebel
XTi, but the light did not show up at all. It must be coated with something that blocks most
light at 650-660nm.
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