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I Rotating coherent laser beam

  1. Sep 1, 2016 #1
    if a coherent laser beam rotates about an axis at very high angular frequency
    can a light dot with radiant glow (of short radius) be obtained due to persistence of vision ?
     
  2. jcsd
  3. Sep 1, 2016 #2

    berkeman

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    Staff: Mentor

    Rotate about which axis? Do you mean like with scanning laser displays?

    http://www.covesion.com/assets/images/laser-display.jpg
    ' laser-display.jpg
     
  4. Sep 2, 2016 #3
    rotates about axis normal to laser beam .
     
  5. Sep 2, 2016 #4

    A.T.

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    You mean there is only one point in space (filled with some scattering medium like air), where the beam always passes? You will get an approx. linear fall-off from that point. Maybe if instead of scattering you use some form of excitation of the medium, you might get different effects.
     
  6. Sep 2, 2016 #5
    please explain
     
  7. Sep 2, 2016 #6

    A.T.

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  8. Sep 2, 2016 #7
    can this concept be employed in holography
     
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