Laser diode Drive circuit

Discussion in 'The Projects Forum' started by Hyperian, Aug 19, 2008.

  1. Hyperian

    Thread Starter Member

    Apr 25, 2008
    13
    0
    I recently bought 10 laser diodes and I am wondering how I should drive them.
    This is the spec sheet for the laser diode
    http://www.laser66.com/html/DL-6353TL.pdf
    It needs 2.15V and 30mA current, well the pdf file has everything.
    I have read some stuff that says the good and bad of using the photodiode inside the laser diode to regulate its current and i'm wondering if i should use it or not in the circuit.

    I have 10, and the minimum i need is 4, so i'm expecting things to break :O

    as a side question, how should i put a heatsink on these if i chose to?
     
    Last edited: Aug 19, 2008
  2. Torben

    New Member

    Mar 15, 2008
    6
    0
    Hi Hyperian,

    Have you read this document yet? Any time I have a question on lasers I usually find something useful in Sam's Laser FAQ.

    I should admit that my experience with diode lasers so far extends to ripping them out of $2 laser pointers and powering them using just the included series resistor from a regulated supply. They work OK for my purpose (beam-break detectors for a foosball scoring circuit).


    Torben
     
  3. kammenos

    Active Member

    Aug 3, 2008
    127
    0
  4. Hyperian

    Thread Starter Member

    Apr 25, 2008
    13
    0
    Thanks for the links, I've been to them before but i guess i did not read them with a good enough eye.

    but the sites doesnt say how to mount or how to heatsink laser diodes, anyone know?
     
  5. Torben

    New Member

    Mar 15, 2008
    6
    0
    I'm afraid I don't know, as the ones I have pulled out of laser pointers already have a heat sink attached.

    However, the www.laser66.com site says that if you have a question which isn't answered on the site, to email them with the question. Perhaps you can fire them off an email while you wait for those more experienced than I to answer you here. :)


    Good luck on your quest,

    Torben
     
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