DVD burner laser

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Rubycon

Rubycon

Madame President
Aug 10, 2005
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Text

650 nm 150 mW laser from a $30 DVD-RW drive. Amazing considering the diodes themselves in single quantities cost more than that! :Q

So next time you have a RW drive that's acting up, you can rip out the visible diode for a fun project. :)
 
Rubycon

Rubycon

Madame President
Aug 10, 2005
17,768
485
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Originally posted by: isekii
nice is there anyway to increase the power ?
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Diode lasers are somewhat tolerant of *moderate* increases of power beyond specification. Heat is a problem with long run times but that can be taken care of with proper mounting. Facet damage is the other common demise of a laser diode - on its way to becoming an LED. :Q It's possible to get 200mW out of a 150mW product and with intermittent use and proper cooling it will provide an acceptable service lifetime.

Originally posted by: goku
Fogetaboutit. All that page does is buffer...
Click to expand...

Right click, save as

On my connection, I'm used to it. :(
 
X

Xyo II

Platinum Member
Oct 12, 2005
2,177
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I've actually seen this happen with an xbox. The laser melted the game cd, and went on to melt the plastic cover of the console. Crazy, huh?
 
Shawn

Shawn

Lifer
Apr 20, 2003
32,236
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Putfile sucks. Requires me to use IE. Also that guy needs a new camera.
 
mugs

mugs

Lifer
Apr 29, 2003
48,920
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91
That was completely unimpressive. It only took them about 30 seconds to make a cut in a piece of paper that I could do in under a second with a pair of scissors.
 
Rubycon

Rubycon

Madame President
Aug 10, 2005
17,768
485
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Originally posted by: Einstein Element
I've actually seen this happen with an xbox. The laser melted the game cd, and went on to melt the plastic cover of the console. Crazy, huh?
Click to expand...


It sounds like something else provided the heat to do that much damage.

DVD's are quite reflective at 650nm. I've actually bounced several WATTS off a DVD and popped balloons strung on the ceiling before. WHOOPS! :laugh:

Consoles can't write to a disk right? (I'm totally out of the loop on these things)
So if they are read only they will have a much lower power laser in the 5mW range - same as the dollar store pointers. That won't burn anything.

Even if the laser was > 100mW, the GRIN lens used to focus the beam for hitting the "pits" on the disk becomes quite large - its divergence is well over 50 milliradians just a mm or two past the disk position.

Originally posted by: mugs
That was completely unimpressive. It only took them about 30 seconds to make a cut in a piece of paper that I could do in under a second with a pair of scissors.
Click to expand...

That totally misses the point. Sure a pin can pop a balloon too. But it's much more fun to do it from afar with a beam of intense light.
 
nakedfrog

nakedfrog

No Lifer
Apr 3, 2001
63,747
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Originally posted by: MisterJackson
Originally posted by: nakedfrog
Now I just need to get some sharks...
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you could get the little Bala Sharks they sell at Petsmart....friggin laser beams!
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I have a red tailed black shark... I don't think he's big enough to support the laser yet.
 
Fritzo

Fritzo

Lifer
Jan 3, 2001
41,920
2,162
126
Dr. Allen and Dr. Parsons have joined with me to put a giant "laser" on the moon made of old CD drives. We call this evil endeavor the Allen Parsons Project.

BWWAAAAAHAHAHAHAAHAHAAHAHAHAAAAAaaaaaaaaaaaaaaa
 
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