584,833 active members*
5,649 visitors online*
Register for free
Login
IndustryArena Forum > Laser Engraving and Cutting Machines > Laser Hardware > Need some advise on laser diode optics
Results 1 to 4 of 4
  1. #1
    Join Date
    Oct 2008
    Posts
    16

    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..

  2. #2
    Join Date
    Apr 2005
    Posts
    304

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

  3. #3
    Join Date
    Mar 2003
    Posts
    35538

    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

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  4. #4
    Join Date
    Apr 2005
    Posts
    304

    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.

Similar Threads

  1. Please Help! Laser and optics question
    By ArtSigns in forum Laser Hardware
    Replies: 0
    Last Post: 04-19-2018, 11:34 PM
  2. Optics for Reci W8 170 Watt CO2 Laser
    By rutexus in forum Laser Engraving / Cutting Machine General Topics
    Replies: 26
    Last Post: 02-08-2013, 03:39 AM
  3. Chinese Laser Optics
    By bpoulin in forum Laser Engraving / Cutting Machine General Topics
    Replies: 5
    Last Post: 03-24-2011, 07:53 AM
  4. Help choosing a laser & optics
    By 2_many_hobbies in forum Laser Engraving / Cutting Machine General Topics
    Replies: 10
    Last Post: 10-02-2009, 08:33 AM
  5. Cleaning Laser Optics
    By MonoNeuron in forum Laser Engraving / Cutting Machine General Topics
    Replies: 4
    Last Post: 05-19-2007, 01:12 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •