Rotating coherent laser beam

  • #1
183
15
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 ?
 

Answers and Replies

  • #2
berkeman
Mentor
61,348
11,871
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 ?
Rotate about which axis? Do you mean like with scanning laser displays?

http://www.covesion.com/assets/images/laser-display.jpg
'
laser-display.jpg
 
  • #3
183
15
Rotate about which axis?
rotates about axis normal to laser beam .
 
  • #4
A.T.
Science Advisor
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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 ?
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.
 
  • #7
183
15
can this concept be employed in holography
 

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