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Thread: Thermal sensitivity of red diodes?

  1. #1
    Join Date
    Aug 2016
    Posts
    4

    Default Thermal sensitivity of red diodes?

    Hi forum;


    I recently got my hands on quite a large red laser diode. I am not sure how powerful it is, /several watts at the very least/, but, the threshold current is 4.5A, and my power supply can only do 5 :-)


    >>Photo of diode<<


    Nonetheless, I have noticed a very strange characteristic with this laser diode. Its output power reduces, substantially, if it is even a tad bit warmer than ambient.


    I have not noticed this, with 445 (InGanAs) chemistries. Does anyone know why a red diode would behave this way?

  2. #2
    Join Date
    Dec 2007
    Location
    Nottingham, UK
    Posts
    2,845

    Default

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