Laser burn

Warning! LaserAt last I repeated experiment from youtube about burning DVD laser. I dissasembled old DVDRW drive. I noticed small crack in laser diode, so I removed the glass. As open laser is very prone to external damage, keep it from water, dust and agresive liquids. I placed laser diode to some colimator from old laser printer. I pumped power up to max- I have few diodes, so decided to burn it to death.
Best way to tune laser beam is to use black, matte material. I used side of the match box- it is brown, but no shiny spots. Also, phosphor on it make nice little smoke. I recorder this experiment with camera, but as the beam is very shiny, the quality of the image is not very good.

Snapshots from video:
laser burns
laser burns
laser burns

And here is the movie about it (Xvid, ~1Mb):

First Run, double matches.
Second run. Single match.

Current is about 0.5A.

More links form my blog (Lithuianian, still not translated):

Next you can see images of laser diode modification.

Diode before. You can see small crack in the glass.
Laser LED modification

Diode without front cover. I put small current to it, so we can see small shiny crystal.
Laser LED crystal

So youtube movies:

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3 Responses to Laser burn

  1. Zxxxy says:

    Hay you are from Lithuania! (zinau! optima degtukai tave izdave! Rasysiu angliskai jei kas nors ziuretu y sita tavo dalyka) So can i use laser from laser printer to burn stuff??

  2. Kad Lietuva tai jokios paslapties, gi kairėje kažkur yra nuoroda į Lietuvišką versiją. O štai ir ta pati tema: http://www.vabolis.lt/2008/01/30/lazeris-uzdega/

    O dÄ—l lazerio iÅ¡ printerio… printerio lazeris per silpnas. Tačiau kolimatorius geras. TodÄ—l lazeris iÅ¡ DVDRW, o kolimatorius iÅ¡ printerio.

  3. JIGNESHDHI9NOJA says:

    DEAR SIR / MEM

    I WANT LASER DIOD / LASER LED IN INDIA
    PLZ HELP ME HOW & WHERE ?

    BYE
    JIGNESH

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