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Thread: Laserman532 OCTOMOM II - The Rebirth

  1. #11
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    Sweet jeebus.. Nice setup.

    I have an idea and am curious if it makes sense.
    Would it be possible to leave a little space on both sides of
    the PBS cube, so you can use 2 anamorphic prism pairs?

    I assume it would work, since they are all expanding in the same
    axis, or do I have the fast axis/slow axis backwards?

    If so, I might be interested, if it don't cost a grand..

  2. #12
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    Quote Originally Posted by CrazyMonkey View Post
    Sweet jeebus.. Nice setup.

    I have an idea and am curious if it makes sense.
    Would it be possible to leave a little space on both sides of
    the PBS cube, so you can use 2 anamorphic prism pairs?

    I assume it would work, since they are all expanding in the same
    axis, or do I have the fast axis/slow axis backwards?

    If so, I might be interested, if it don't cost a grand..
    this kit is a suggestion...i can do anything anybody wants...do you want an prisim table in front of each diode? Do you want it longer to accommodate a collimator? What ever you want...I am looking for suggestions and any constructive input.
    Pat B

    laserman532 on ebay

    Been there, done that, got the t-shirt & selling it in a garage sale.

  3. #13
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    Quote Originally Posted by dave View Post
    Of course, but at the sacrifice of a already poor divergence in the fast axis.
    so how would you improve on this layout?
    Pat B

    laserman532 on ebay

    Been there, done that, got the t-shirt & selling it in a garage sale.

  4. #14
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    swamidog is online now Jr. Woodchuckington Janitor III, Esq.
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    Quote Originally Posted by Laserman532 View Post
    so how would you improve on this layout?
    unicorns.

    12345
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

  5. #15
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    I think you would need to correct the fast axis to the slow axis ( or vice versa not sure which ) of each "stack" of 4 diodes then combine the two with a PBS.
    Last edited by MisterWilling; 07-13-2010 at 16:05. Reason: typo

  6. #16
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    I was referring to using 1 prism set per 4 diodes, right before the PBS.
    But only if it works. I think you would have to stack half like in the diagram,
    and stack the other half in the other axis to match the diode axis.

    The fast axis, slow axis thing is a bit too much for me to understand atm.
    If I had a prism set I would learn a lot faster.
    (I hope there is another prism group buy again)

    @MisterWilling. Really, I thought just in one axis was working well?

  7. #17
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    Quote Originally Posted by CrazyMonkey View Post
    @MisterWilling. Really, I thought just in one axis was working well?
    You are correct, it was just hard to understand the way I typed it. I updated my previous post to be clearer.

  8. #18
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    Quote Originally Posted by Laserman532 View Post
    so how would you improve on this layout?
    I wasn't having a dig at you mate...

    I guess you have 3 options tho.

    1. shrink the beam, increase the divergence
    2. increase the beam size, shrink the divergence,
    3. be happy with a ~5mm, 1.5mrad 8w beam.

    I would probably go with 3.
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  9. #19
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    Quote Originally Posted by dave View Post
    I wasn't having a dig at you mate...

    I guess you have 3 options tho.

    1. shrink the beam, increase the divergence
    2. increase the beam size, shrink the divergence,
    3. be happy with a ~5mm, 1.5mrad 8w beam.

    I would probably go with 3.
    oh, no worries on this end...i was asking a legitimate question to you, and you answered! thanks! no biggie. After seeing heroics quad...i was actually impressed with the beam with no mods except the glass lens...so my biggest concern here with OCTOMOM II is...you will still need to rotate the polarization for beam combining purposes...Will the "top section" for example have to be a vertical knife edge like this "=" except for four of them. That is a 15mm cube in my drawings and I was thinking that was pretty big for the prisim setup, but I could put prisms before the PBS cube. Granted...machining a single block for the diodes would be an ideal situation...this thing could be built today using my stuff...a tad pricey yet...functional...today...if anyone wanted to try one...

    heck i can make it longer to accommodate telescope or what ever...it is only 6x8 now.
    '
    oh well...discuss...
    Pat B

    laserman532 on ebay

    Been there, done that, got the t-shirt & selling it in a garage sale.

  10. #20
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    If the top and bottom rows were in the opposite zigzag pattern, that alone may allow
    room for prism pairs if someone wanted. maybe need extended a tad before the PBS.
    and room for a scope maybe. The only other thing would be either custom diode mounts with different heights, or shims maybe to get the knife edge in the other axis, if wanted. That one is a pain to tackle.

    Its already just about perfect as is though!

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