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Thread: Plasma laser

  1. #1
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    Plasma laser

    In Ringworld, a solar flare generates a laser beam by magnetically fiddling with the plasma stream. Is that a plausible occurrence? Could there be a laser with no material parts besides plasma and hot gas?
    "I'm planning to live forever. So far, that's working perfectly." Steven Wright

  2. #2
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    Quote Originally Posted by Noclevername View Post
    In Ringworld, a solar flare generates a laser beam by magnetically fiddling with the plasma stream. Is that a plausible occurrence? Could there be a laser with no material parts besides plasma and hot gas?
    We observe masers (microwave lasers) from space. Lasers aren't so implausible.
    Forming opinions as we speak

  3. #3
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    I remember this old site
    http://forgetomori.com/2010/science/...laser-planets/

    http://laserstars.org/amateur/scifi.html#meteor

    By dropping a large asteroid into a very hot stellar atmosphere a corridor of vaporized meteoric material can be created. This extremely narrow channel could act as a gaseous refrigerant to increase the plasma cooling rate and create a population inversion.
    The laser power of this scheme would depend on the amount of asteroidal material which was vaporized, i.e. more material means more plasma can be cooled increasing the gain.

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    Quote Originally Posted by publiusr View Post
    I remember this old site
    http://forgetomori.com/2010/science/...laser-planets/

    http://laserstars.org/amateur/scifi.html#meteor

    By dropping a large asteroid into a very hot stellar atmosphere a corridor of vaporized meteoric material can be created. This extremely narrow channel could act as a gaseous refrigerant to increase the plasma cooling rate and create a population inversion.
    The laser power of this scheme would depend on the amount of asteroidal material which was vaporized, i.e. more material means more plasma can be cooled increasing the gain.
    Thanks, that looks like just the ticket.

    If I combine this with my thread on the fusion rocket, it means a fusion powered spacecraft can have a potent long range weapon available. Over and above the normal deadliness of a fusion powered spacecraft, that is.
    "I'm planning to live forever. So far, that's working perfectly." Steven Wright

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