Need some advise on laser diode optics


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Thread: Need some advise on laser diode optics

  1. #1
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    Default Need some advise on laser diode optics

    I am trying to focus a 2.5w blue solid state laser diode... But then this happens (attached images)...

    No clear small dot is ever achieved... Any idea why? There always this "line" crossing the focal point..

    This arrived as this from factory..

    Is it a optic flaw? A diode flaw? Is it... Normal ?

    I have co2 experience... But solid state lasers are yet a new field for me. Any feedback would be highly appreciated..

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    Need some advise on laser diode optics-img_20190419_215902-1024x2048-jpg  


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    Member ZASto's Avatar
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    Default Re: Need some advise on laser diode optics

    Try lowering laser module.
    It looks that is located too high so that focus point is way above yourpaper.
    On my 2.5W module, focal length is cca. 40mm.

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    Community Moderator ger21's Avatar
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    Default Re: Need some advise on laser diode optics

    Based on this, it appears that diode lasers output a rectangular shaped beam.

    https://jtechphotonics.com/?p=6853

    Gerry

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    Member ZASto's Avatar
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    Default Re: Need some advise on laser diode optics

    But they can be focused to a beam of cca. 0.1mm diameter.
    When out of focus, beam appears as line.

    Make no mistake between my personality and my attitude.
    My personality is who I am. My attitude depends on who you are.


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Need some advise on laser diode optics

Need some advise on laser diode optics