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Old 01-13-2011, 11:42 PM #1
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Default First Build

Hey guys. New around here. So I have recently gotten into lasers, and I decided I want to do my first build.

Right now, I don't have access to PayPal (hopefully will soon) but I can't seem to get a laser diode from anything around the house, and no one seems to have any.

I have been asking for broken DVD players... played around with a couple, I couldn't find any diodes in any of them. I take it that normal DVD readers don't actually have diodes in them? The internet lied to me!

Nonetheless, what does have laser diodes in them? I am just looking for cheap extraction methods here... probably just going to practice on extraction and then eventually buy myself a nice sled or something once I get good at it.

Anyway, where can I find diodes (or sleds)?!


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Old 01-14-2011, 12:26 AM #2
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Default Re: First Build

Are you serious?
I suggest you get a lot more reading done before you post again, you can start
with the first link in my signature.
Next step, befriend the search engine and read some more.
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Old 01-14-2011, 12:27 AM #3
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Default Re: First Build

You need a DVD burner 16x 20x 22x etc
Normal dvd reader drives have a 1-5mW red diode not worth using,
CD players and CD burners have an IR laser diode (do not use this for a first build)
when you get paypal you can buy a LOC diode capable of 300mW for about $8,
or a 100mW blu ray diode called a "PHR-803T".
once you have mastered these builds you could move onto a 445nm diode which is 1W of a nice blue colour.

As for where to get some sleds to use, try hightechdealz.com
HERE is the PHR diode wich you can make run at 100mW at about 100-110mA.
HERE is a red diode that will do over 200mW

REMEMBER: Buy some laser safety glasses!

Last edited by TTerbo; 01-14-2011 at 12:38 AM.
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Old 01-14-2011, 12:36 AM #4
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Default Re: First Build

If I may suggest...
Greg at Stone Tek is great to work with.(I picked up a bunch of empty sleds from him) On his site he has most of the parts you need to build your own.

http://stonetek.org/shop/

The rest is all here in LPF through some good reading you can learn anything you want.
Welcome and good luck!
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Old 01-14-2011, 12:45 AM #5
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Default Re: First Build

Hey, thanks everyone. As for the reading... I actually have done a lot of reading and searching (been spending hours on this forum every day for a couple of weeks now), but I only saw diodes being located in laser projectors, Blue-ray players (right? memory is killing me right now), and DVD Burners. I figured, however, that due to the nature of a DVD or a CD-ROM, a laser would be necessary in order to read it.

Guess not? Or maybe I just missed it (it was my first time searching for a diode [I went right for the sled, obviously, but I didn't see anything round with three pins in it and a lens... bizarre]), but that doesn't really matter.

Anyway, I guess I will need to scavenge and hope more until I can actually buy myself a sled/diode. Then comes the rest of the build.
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Old 01-14-2011, 12:59 AM #6
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Default Re: First Build

To my knowledge all dvd and cd-rom drives use a laser diode or two.
The only exception that I can think of is the old style Video Disc Players that used a Helium Neon gas laser.
There are quite a few post here on how to harvest a diode from a sled and they will show you where the diode is located, how to extract it from the sled, and how to extract it from the heat-sink.
Continue reading and your questions will be answered.
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594nm Melles Griot HeNe
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488nm.40mW Multi-Line Argon Ion laser.....(with thanks to Dave)
515nm Argon Ion laser 40mW
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543nm Melles Griot HeNe
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Old 01-14-2011, 01:07 AM #7
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Default Re: First Build

I saw a bunch of lenses and other optics... so there probably was a diode in there. Just may not have done it right and may have obliterated it to be unrecognizable. Ah well, it was a free broken DVD player my friend had. Nothing wasted.
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