On 9/13/2022 4:25 AM, John Clark wrote:
On Mon, Sep 12, 2022 at 2:44 PM John Clark <johnkcl...@gmail.com> wrote:
> Well yes, increasing the output energy more than the input energy
would violate the laws of physics, but increasing the power would
not. This could do more than just make new weapons, it could
increase the possibility of controlled nuclear fusion by means of
inertial confinement; and to get it going and ignite a deuterium
tritium pellet you have to put a huge amount of energy into a
short burst, and the shorter the better.
And if you've got a laser with 90% efficiency and you don't have to
worry about damaging the optical components (and if they're made of
plasma you don't) then the number of super short laser pulses you
produce each second is limited only by the electrical power supply
feeding the laser.
I doubt that. To lase the atoms need to be pumped up to excited states,
which takes time. I see nothing in the paper about increasing the pulse
rate. It's just about decreasing the pulse duration. So the average
power stays the same even though the peak power goes up many orders of
magnitude. In his numerical example he refers to the current non-plasma
limit being 2e12 W/cm^2 and a energy flux of 4 J/cm^2. So it's the 4
J/cm^2 that's your heat ray. The fact that he can be 5e17 W/cm^2 comes
from compressing the pulse, not making them more frequent.
Brent
There's no reason you couldn't hook it up to Hoover Dam, and 90% of
the electrical energy it produced would go into the light energy of
the output beam of the laser.
John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>uqq
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