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Thread: Got Red?

  1. #21
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    I was thinking that they were 2 diff wavelengths e.g. 650 and 660.
    That may be wrong..I dunno

  2. #22
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    The nm of the diodes doesn't matter, in the configuration in that picture you could use any frequency you like, so long as they are linearly polarized.

  3. #23
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    What I was thinking of is 1 650 Vpol, 1 650 Hpol, 1 660 Vpol, 1 660 Hpol, 2 BS cubes and combine them all with a 3d BS cube.

  4. #24
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    would the 3rd BS cube have to be a dichroic with a very narrow bandwidth (is that the right word?) to transmit 650 and reflect 660 like you would in an RGB with the other colours? I'd have thought that the polarization would become random after the first set of PBS's so you wouldn't be able to combine them again with a PBS.

  5. #25
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    I see what you're thinking, but you the 3rd PBS will not work as your trying to mix (now) randomly polarised beams

  6. #26
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    Randomly polarized, but at 2 different wavelengths. The BS cube.. oh , right.. nevermind. Well, don't they make a 50/50 cube that accepts random pol? Or, as Lampy said, a dichro with sharp cutoff.. This is going to get expensive.. :/

  7. #27
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    It's not easy, the biggest problem to overcome is spherical aberrations when using so many optics to shape the beam into a tight one...

    Thats why the pro lasers are so fekkin expensive

  8. #28
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    Right-O
    Here is a non-polarizing BS cube, though. I dont know if this would work or not.
    http://www.lightmachinery.com/catalo...2beamsplitters

  9. #29
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    This is interesting. I wonder what the diode power level is?
    http://cgi.ebay.com/Pioneer-S201-Aut...QQcmdZViewItem

  10. #30
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    I think what MediaLas did is similar to what Marconi did with his quad maxyz.

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