lasers

[jon_89]

Today I was looking around and found a laser made with a dvd laser. Anybody here know anything about this or done it before?

[jackssmirkingrevenge]

[youtube][/youtube]

[spudy buddy]

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.

[jon_89]

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?

[jackssmirkingrevenge]

Try here or check out the instructable.

[jon_89]

This is what I was going for.=http://www.felesmagus.com/pages/lasers-howto.html Do I have to buy a laser diode though?

[jackssmirkingrevenge]

This is what I was going for - lasers how-to

Do I have to buy a laser diode though?

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.

[jon_89]

Well I was confused with the instructables and this one.

[spudy buddy]

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)

[jon_89]

do you think it would burn a hole in paper from 3 feet away?

[Eddbot]

(imagine every little kid havind a burning laser pointer and pointing them at each other lol)

:violent3:
that's going into my stash of unforgetable quotes along with my favorite from JSR:

"fetish" (as I've seen it called in this thread - one would think I rub myself with the stuff in the bedroom ^* )

[jon_89]

what is mw and nm? the nm seems to be pretty constant but mw goes from 5 to 10 and up?

[jon_89]

what is meant by mw and nm? what are the differences?

[jackssmirkingrevenge]

As far as I can tell, MW is milliwatts, a measure of power, while NM refers to nanometres, a measure of the wavelength perhaps?

[Novacastrian]

Sorry, i could not,<a href="">Resist</a>