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Thread: Combining multiple beams

  1. #1
    Join Date
    May 2014
    Location
    Barcelona, Spain
    Posts
    435

    Default Combining multiple beams

    Hi all!
    Want to build high power rgb laser.
    I've find several ways to combining multiple beams, say, knife edge & beam splitter techniques (once).

    but... for example please take a look at KVANT 30w rgb:
    http://p.globalsources.com/IMAGES/PD...1072773785.pdf

    How they obtain, for instance, 10W/445nm?? knife edge here?
    http://s187.photobucket.com/user/mag...nics_.jpg.html

    the same for Red module: 10W/637+660nm etc

    Any ideas about technique they use?

    Many thanks!!

    Jordi
    Last edited by jors; 05-09-2014 at 03:52. Reason: corrected link

  2. #2
    Join Date
    Mar 2009
    Location
    New Orleans, LA USA
    Posts
    399

    Default

    Those diodes are knife edged together. Beams are stacked NEXT to each other (for each color) then after you stack all the beams of the same color next to each other you then combine your colors by stacking the 3 colors ON TOP of each other.
    10W RGB
    2x 5W RGB
    2x 3W RGB
    2x 1W Green
    ---------------------------------
    QM.NET, 2x FB3, LivePro, Beyond, APC40,
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  3. #3
    Join Date
    May 2014
    Location
    Barcelona, Spain
    Posts
    435

    Default

    Many thanks for your reply!. I thought commercial high power units used some more advanced techniques to combine beams. I was wrong.

  4. #4
    Join Date
    Dec 2008
    Location
    veenwouden
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    2,523

    Default

    The technique is not so simple as it looks. The difficult thing is not the stacking but getting it rock stable so the beams stay alligned. Try it for once and you quickly will notice that it takes allot of time and effort. That time could also be spend on learning the lasercontrol software and enjoy the lasershows. Do some research on PL if you want to learn about stacking. You will notice that there are only a handfull that have adchieved to build anything above 4 diodes. Most people give up in the end since they like to do lasershows more then building stackers


    Interested in a system or modules? Feel free to contact us directly!

  5. #5
    Join Date
    Jul 2007
    Location
    west sussex uk
    Posts
    2,279

    Default

    The only real reason most people give up build multi stack builds is they don't have access to a mill , as it's near impossible to build a good stable one without some milling work at some point .
    And getting work done at a machine shop is so expensive you just as well buy a ready built module
    When God said “Let there be light” he surely must have meant perfectly coherent light.

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