lasers
Posted: Sat Jan 12, 2008 11:59 pm
Today I was looking around and found a laser made with a dvd laser. Anybody here know anything about this or done it before?
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Posted: Sun Jan 13, 2008 12:06 am
[youtube][/youtube]
Posted: Sun Jan 13, 2008 12:08 am
i know that if you use the diod from a dvd/cd burner than the laser can burn throgh paper in theory. haven't done it though.
Posted: Sun Jan 13, 2008 12:17 am
Hey Jack your video says no longer available. What would be the difference between this and one of those cheapo laser pointers? I was reading people just hooking up a couple batteries to a dvd burner laser and it worked but then I read somewhere else you have to buy a laser diode. Is it really that simple?
Posted: Sun Jan 13, 2008 12:21 am
Try here or check out the instructable.
Posted: Sun Jan 13, 2008 12:24 am
This is what I was going for.=http://www.felesmagus.com/pages/lasers-howto.html Do I have to buy a laser diode though?
Posted: Sun Jan 13, 2008 12:35 am
No, you get the diode from the the DVD burner:
Once I had the DVD drive, it took me less than 15 minutes to completely strip it and extract the optical works. There were two diodes, lots of little mirrors and things, and some circuitry. It took another few minutes to extract the two diodes with their heat sinks. The rest of the optical bits and pieces were saved, as was the motor that opened and closed the drawer - it can be used, with a mirror, to do effects. Everything else was junked.
Posted: Sun Jan 13, 2008 12:41 am
Well I was confused with the instructables and this one. 
Posted: Sun Jan 13, 2008 2:10 am
the thing that makes a cheapo laser pointer and the dvd bernur one different is the fact that the dvd one is made to burn little tine miceoscopic holes in dvd and cd disks which are hard plastic so the diode needs to be pretty strog. cheap laser pointers arn't ment to burn stuff for a safty issue.(imagine every little kid havind a burning laser pointer and pointing them at each other lol)
Posted: Sun Jan 13, 2008 2:47 am
do you think it would burn a hole in paper from 3 feet away?
Posted: Sun Jan 13, 2008 2:52 am
:violent3:spudy buddy wrote:(imagine every little kid havind a burning laser pointer and pointing them at each other lol)
that's going into my stash of unforgetable quotes along with my favorite from JSR:
jackssmirkingrevenge wrote:"fetish" (as I've seen it called in this thread - one would think I rub myself with the stuff in the bedroom
<sup>*</sup> )
Posted: Sun Jan 13, 2008 3:55 am
what is mw and nm? the nm seems to be pretty constant but mw goes from 5 to 10 and up?
Posted: Sun Jan 13, 2008 4:07 am
what is meant by mw and nm? what are the differences?
Posted: Sun Jan 13, 2008 4:13 am
As far as I can tell, MW is milliwatts, a measure of power, while NM refers to nanometres, a measure of the wavelength perhaps?
Posted: Sun Jan 13, 2008 4:13 am
Sorry, i could not,<a href="">Resist</a>