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Laser beam caught on camera in flight! — Parallax Forums

Laser beam caught on camera in flight!

CuriousOneCuriousOne Posts: 931
edited 2015-01-28 12:38 in General Discussion
https://www.youtube.com/watch?v=Uq0H4-nvBB8&x-yt-cl=84838260&x-yt-ts=1422327029&feature=player_embedded

Besides huge breakthrough in speed camera development, existence of sensors of such speed means that laser beam can be modulated with specific ultra high frequency (actually, modulation was possible before, control was hard), enough to precision, to allow generation of standing waves and other interesting effects. From the visual side, this means that jedi sword (at least, 100% visual copy) will become available.

Comments

  • kwinnkwinn Posts: 8,697
    edited 2015-01-28 07:52
    Now that is impressive. Wonder how much the camera costs?
  • DomanikDomanik Posts: 233
    edited 2015-01-28 08:08
    Link to Details


    "The team arranged the camera to film a side-on view of a green laser firing at an arrangement of mirrors. By firing 2 million pulses over a 10 minute period and subtracting background noise, they were able to build up enough air-scattered photons in the camera to track the laser's path as it bounced.

    "What comes out is a frame by frame of the light moving through our system," says Gariepy. In their video, this position data is overlaid on a background photograph taken with a regular camera, and coloured green to match the laser's true colour."
  • GordonMcCombGordonMcComb Posts: 3,366
    edited 2015-01-28 09:56
    kwinn wrote: »
    Now that is impressive. Wonder how much the camera costs?

    If you have to ask you can't afford it!
  • tonyp12tonyp12 Posts: 1,951
    edited 2015-01-28 12:38
    It must be hard to get a side view of a laser beam as I would guess less than 1% is diffracted towards the camera when it goes thru air molecules (if it's rather clean air)
    And with such high speed shutter you need all the light you can get.
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