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Thread: Stagger Height for P73's and 445?

  1. #1
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    Default Stagger Height for P73's and 445?

    I currently stack my red and blue diode as such "|" I have been using a guesstimate shimming method to get them as close and tight as possible prior to correction lens. Does anyone know the best stagger height to provide a machine shop to build the proper mounts when stacking and not knife edging.

    I also have been told I might be best giving up some power an stacking even tighter to land better on the galvos. Any information would be greatly appreciated.

    John
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  2. #2
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    impossible to anwser.

    what lens are being used?

    the best thing to do is measure the beams your self ;-)

    but dont use a ruler you need a pair of digital caliper
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  3. #3
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    Thanks forgot how the first lens would come into play.
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    i dont understand that anwser but ok
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  5. #5
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    I was trying to say I forgot that the diode lens would effect beam shape height on exit. By first, I just meant prior to the correction pair that would be down further.

    Anyhow, i'll measure to see what the height of the beam is, am I correct to say that stagger height would then be half of the beam height?
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  6. #6
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    your posts are confusing me lol

    measure the thickness/width/height of the beam at aperture, so where it exits the lens.

    then the off set for stagger is that measurement, NOT half
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  7. #7
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    Quote Originally Posted by andy_con View Post
    your posts are confusing me lol

    measure the thickness/width/height of the beam at aperture, so where it exits the lens.

    then the off set for stagger is that measurement, NOT half
    Sorry about being confusing, i'll post more later in the day, after I wake up a bit.
    leading in trailing technology

  8. #8
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    lol no worries

    will respond to ya pm when i get home from work
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  9. #9
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    also another thing I found effects the beam height is if the diode is center in it mount. I found most mounts have a little play in them which is enough to shift the beam a bit when first lens
    is in. and found when building a module far field beams at different heights, to fix this I turn on lasers low point at wall with no mirror mounts in the way .loosen bolts clamping diode
    and give them a nudge so all the beams are at correct height, a re-focus of first lens and job done, then I do the measuring for stacking shims.
    When God said “Let there be light” he surely must have meant perfectly coherent light.

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