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Thread: Quick test build with broadband PBS

  1. #1
    Join Date
    Jun 2010
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    Default Quick test build with broadband PBS

    I picked up a bunch of broadband PBS from P1t8ull on PL for my 1W red build.As the LCC and lens are still in transit I thought I would have a play with one of these PBS today.

    Just a bit of junk ali plate, with a quick PBS mount/clamp made of 12x12mm ali box and 12mm ali bar, 10mm M3 pillar, painted stove black. This test is with a 6x BluRay 405nm and LCC 660nm, all AR glass lens. I'll post up some pics once it gets dark and I get the smoke machine pumping.

    This was a cool little project, my first with a PBS. I rotated my LD's to achieve H & V polarisation, worked out which facets of the PBS to use for each and setup near field then far field alignment. Dave's micro flex mounts are cool!

    My first lesson building and aligning this? As with dichros, you must get the near field sorted before the far field! All lessons gleaned here recently. Thanks guys.

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    Last edited by dnar; 11-21-2010 at 01:41.
    This space for rent.

  2. #2
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    My camera does weird things with 405nm. These beam shot are pink/purple in real life.

    Click image for larger version. 

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    This space for rent.

  3. #3
    Join Date
    May 2008
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    Your build looks tidy mate.

    Just wondering about the "H & V" polarisation you mention.

    Forgive my undoubtedly silly question, but why do the beams from each LD need to be polarised?

    I'm not questioning your reasoning, rather trying a cheeky shortcut to understand the point of polarisation in beam combining

  4. #4
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    This is a polarised beam splitter, used in reverse to combine beams.

    One facet reflects, the other transmits light however only particular polarisation for each.

    http://www.photonlexicon.com/forums/...s-cube-secrets

    BTW, the build above is only a quick test build. No practical use.
    This space for rent.

  5. #5
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    Jun 2010
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    El Paso, Texas USA and Juarez,Chihuahua Mexico
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    Just playing with ur new toy there. I'm thinking to throw mine into a quad too. Have fun.-jimmy
    Wiki:The first visible wavelength laser diode was demonstrated by Nick Holonyak, Jr. in 1962.



    FS: hi grade SEAL DUST

  6. #6
    Join Date
    Oct 2009
    Location
    Perth Western Australia
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    Hi Wayne,

    Hope you are feeling better.

    Cool, nice pics of Dave's gear in action.

    Oh, this is great having a fellow laser freak in my home town

    I should be home on 30th Nov until the 6th Dec. Are you home then and free for a visit?

    Kit

  7. #7
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    Quote Originally Posted by kitatit View Post
    Hi Wayne,

    Hope you are feeling better.

    Cool, nice pics of Dave's gear in action.

    Oh, this is great having a fellow laser freak in my home town

    I should be home on 30th Nov until the 6th Dec. Are you home then and free for a visit?

    Kit
    Hi Mate,

    Yeah sure. I hope you like BBQ and beer. Drop me a line.
    This space for rent.

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