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Physicists Have Created the Brightest Light Ever Recorded (vice.com)

Jason Koebler writes: A group of physicists at the University of Nebraska-Lincoln's Extreme Light Laboratory announced Monday that they have created the brightest light ever produced on Earth using Diocles, one of the most powerful lasers in the United States. When this high intensity laser pulse, which is one billion times brighter than the surface of the sun, strikes the electron, it causes it to behave differently. By firing this laser at individual electrons, the researchers found that past a certain threshold, the brightness of light will actually change an object's appearance rather than simply making it brighter. The x-rays that are produced in this fashion have an extremely high amount of energy, and Umstadter and his colleagues think this could end up being applied in a number of ways. For starters, it could allow doctors to produce x-ray medical images on the nanoscale, which would allow them to detect tumors and other anomalies that regular x-rays might have missed. Moreover, it could also be used for more sophisticated x-ray scanning at airports and other security checkpoints.

14 of 96 comments (clear)

  1. Finally! by Z80a · · Score: 3, Insightful

    Now it is possible to play the original gameboy advance!

  2. A minor detail... by phozz+bare · · Score: 4, Insightful

    it could allow doctors to produce x-ray medical images on the nanoscale

    However, researchers are still trying to overcome the slight technical difficulty of the patient being vaporized in the process.

    1. Re:A minor detail... by infolation · · Score: 2

      Why not combine airport security scanning with nanoscale tumor detection for a free hospital checkup every time you fly?

  3. Wait, is this deja-vu? by wierd_w · · Score: 3, Interesting

    I seem to remember something about this kind of thing about 8 years or so ago, where the schwinger limit was postulated to be unreachable due to self-interactions of the beam...

    https://arxiv.org/pdf/1007.430...

    and that due to these self-interactions, there was a theoretical fixed limit to photon flux in vacuum before the limit that would cause vacuum decay.

    Did this work somehow exceed that prior work?

    1. Re:Wait, is this deja-vu? by Moblaster · · Score: 5, Informative

      In this experiment they are basically jamming up the valence shells with photon wavepacket energy - the valence shells do not have time to "discharge" the energy before getting hit again, so they get overloaded in a sense. The output photons combine the energies of the input photons allowing for various harmonic (double, triple etc) frequency (i.e. energy) of the incoming photons. Basically if you consider normal decay times for re-emission under normal (not-so-bright light flux conditions), if you can fire photons at an atom faster than the average decay (normal re-emission) time, you'll start to get these energy-combining effects. The "appearance" changes because the normal preservation of angular momentum in the output re-emission is also altered (along with the output energy) because it must be preserved as well, so you don't get re-emission at the regular angle anymore.

    2. Re:Wait, is this deja-vu? by esonik · · Score: 2

      What you describe is almost right. Yes, laser photons scatter with electrons to generate x-ray photons, but the process is Compton scattering, not harmonics generation. The electrons are laser wakefield-accelerated (i.e. free) electrons of about 55 MeV kinetic energy (yes, capital M) , not valence electrons.
      Compton scattering analog would be playing billiard with electrons an photons: You can transfer energy from electrons to photons. In this case you take a fat high-energy (moving) electron and hit that with a low energy laser photon. This transfers a lot of kinetic energy onto the photon making it an x-ray photon, basically.
      There are no atoms involved in the primary process, so there is no re-emission and no decay - it's just scattering.

  4. Re: UNL sucks by LynnwoodRooster · · Score: 4, Insightful

    So your complaints are that they are profitable and pay for all services rendered by the University (including scholarships for their athletes), but they are raising outside funds for a new stadium at zero cost to the University (in actuality, it will be a financial win for the University as it will receive even more payments and enhanced sales tax revenue which goes to fund higher education). Got it. It's the "optics" that matter, not the actual actions.

    --
    Browsing at +1 - no ACs, I ignore their posts. So refreshing!
  5. A likely story by Trogre · · Score: 5, Funny

    Pretty sure the blue LED on the front of my stereo is brighter.

    --
    "Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife
    1. Re:A likely story by pr0t0 · · Score: 4, Funny

      The screen on my cell phone...at 06:00 am is easily the brightest object in the universe.

      --
      I'm sorry, but your opinion seems to be wrong.
  6. Just how bright is it? by djinn6 · · Score: 2

    How does this laser compare to some of the brightest objects in the universe, such as gamma ray bursts and quasars?

  7. Lack of Imagination by Anonymous Coward · · Score: 2, Insightful

    Physicists Have Created the Brightest Light Ever Recorded

    ...and the best thing they can think to do with it is airport security screening?

  8. First use by joncombe · · Score: 5, Funny

    Will be for BMW headlights. They seem to like to fit blindingly bright headlights. Yes it's great if it helps the BMW driver see but not so good if the drivers coming the other way can't see anything.

  9. Exactly, what rubbish. by goombah99 · · Score: 2

    One of two things happens.
    1) the flesh between the imager and the molecules a few microns deep in the tissue will distort the wavefront rendering it non-bright (i.e. focusable) or
    2) you jack up the power to compensate for the lost bightness and varporize the flesh.

    Already, non-high brightness laser imaging of breast tissues and such are at the flesh burn limit so you can't actually use a more powerful laser. And there's no practical way to prevent the distortion from occuring.

    Ergo the claim is rubbish.

    You could still use it to look at surfaces of biopsies. But you don't need higher brightness to see indiviidual cells for that.

    --
    Some drink at the fountain of knowledge. Others just gargle.
  10. Improved Airport Security by Roger+W+Moore · · Score: 2

    However, researchers are still trying to overcome the slight technical difficulty of the patient being vaporized in the process.

    That's why it will make an excellent airport security detector. It's guaranteed not to let any bomb or potential terrorist get past it.