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EU Shark Science Technology

Ultra-Powerful Laser To Be Built In Romania 41

cripkd writes "The 3rd pillar from the ELI program was given the go ahead Tuesday: 'In Romania, Magurele, the ELI pillar will focus on laser-based nuclear physics. For this purpose, an intense gamma-ray source is foreseen by coupling a high-energy particle accelerator to a high-power laser.' Here are some specs and details about why this is not your regular key-chain laser."
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Ultra-Powerful Laser To Be Built In Romania

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  • by GigG ( 887839 ) on Thursday September 20, 2012 @09:24AM (#41398085)
    Now all they need is a really big shark.
  • What's the point if we can't put one of these on a fricken shark? I mean, seriously. Is that too much to ask?
    • by K. S. Kyosuke ( 729550 ) on Thursday September 20, 2012 @09:29AM (#41398163)

      What's the point if we can't put one of these on a fricken shark? I mean, seriously. Is that too much to ask?

      Of course you can put one these on a shark. Unfortunately, you'd have to clone that Megalodon first, they're kind of rare these days.

    • by Anonymous Coward

      What's the point if we can't put one of these on a fricken shark? I mean, seriously. Is that too much to ask?

      The gadget might be a tad bit too large to be mounted on a fish
      but I suppose that someone could bolt a shark on it.

    • by mcgrew ( 92797 ) *

      You missed first post. Mods, he's redundant. In fact, the previous shark comment (actual FP) should be marked redundant as well because it's just too damned obvious.

      You want a non-obvious, far better (but still bad) shark joke? Come on, guys, have you no originality at all?

      Q: Why did the shark cross the road?
      A: To get to Romania.

  • by impossiblefork ( 978205 ) on Thursday September 20, 2012 @09:46AM (#41398413)
    A week ago or so I wanted to build some sort of passive optical arrangement to combine two images additively. One can't do it with mirrors and if one tries to do it with lenses, or tries to use internal total reflection somehow it will turn out that one can never get the internally reflected ray and the ray the ray entering through the surface of the lens to coincide. In fact I ended up strongly suspecting that it couldn't be done.

    But "coherently adding" beams sounds exactly like this. Does anyone know if it really is the same thing, or how it works?
    • by Anonymous Coward on Thursday September 20, 2012 @11:05AM (#41399543)

      Some beam combining is just lens squeezing a bunch of side by side lasers down into a smaller beam, where the beam shape doesn't matter as much as beam power.

      The easiest way to combine two beams right on top of each other is just for them to have orthogonal polarizations, and run them "backwards" through one of the various optics that can split polarizations. You then end up with an unpolarized beam. With a little more care, if you can make sure the phases of the two beams are the same, you can combine two orthogonal linear polarized beams and end up with a linear beam output at 45 degrees to the original polarization, which then allows you to repeat the combining process. You can also use diffraction gratings to combine several beams on to one output beam, without using polarization.

      Doing these methods in a coherent fashion requires careful control of the relative phase of each laser, and starts acting more like phased arrays from radio/microwave bands. Things also get messy, as you can easily get into situations where ray optics no longer work and need to work with quasioptics.

  • by rtobyr ( 846578 ) <<ten.sdrahcir> <ta> <ybot>> on Thursday September 20, 2012 @10:32AM (#41399043) Homepage
    Didn't Bill Bixby and Lou Ferrigno show us why this is a bad idea?
  • by slew ( 2918 )

    Somehow, when I read this headline about romania, the first thing that came to mind was the q-bomb...

  • "When in Rome, do as the Romanians do."
  • I think a Romanian Hulk reboot is exactly what Hollywood needs right now.

I've finally learned what "upward compatible" means. It means we get to keep all our old mistakes. -- Dennie van Tassel