Read more.Quote:
Now aiming to increase the 100m long LFEX device output to 10 quadrillion watts.
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Read more.Quote:
Now aiming to increase the 100m long LFEX device output to 10 quadrillion watts.
The most important (but missing in this article) numbers, direct from the first line of the paper abstract: "2 kJ in a 1.5 ps pulse"
Re: continuous use question.
I have no real background in this stuff but am just curious - what do they use for lenses and would this not limit continuous use anyway? Even if only a tiny fraction of the transmitted energy were absorbed, surely it wouldn't have to run for long before any lenses or mirrors involved melted and ceased to function properly.
It's like a camera lens though isn't it? I mean the lens etc. are fine as the laser is NOT focused on it
The hint for what it's probably for is in the name, "Laser for Fast Ignition Experiments" likely something to do with either, laser initiated Fusion, or as an overscale system for prototyping a replacement for sparkplugs. Both options are things I'm aware are being worked on in Japan, so there's every chance this is to do with one of 'em.
Similar to the USA national ignition facility.
I think it's more interesting for scientists investigating very very high-temperature/pressure, e.g. processes in nuclear explosions (both bombs and stars).
Practical civilian use seems much more far off. There was some crazy idea that this could be used to generate power through nuclear fusion, though I've no idea how they'd extract power and quickly repeat the pulse/blast. #deathstar ?
"No Mr Bond, I expect you to die"
Phased plasma rifle in the 40 watt range?
"Laser Beam".
https://www.youtube.com/watch?v=voSpOrimkMY
The video isn't the scene I quoted, but it was the closest I could find.
So, can they finally take out Godzilla and Mothra, or have they just managed to find a way to tweak them off even more than they already are?
So my question is, how close are we to having blaster rifles that are at least as accurate as Stormtroopers?
No. Even if your lens is 99.9% transmissive (which it won't be), it will absorbs 0.1% of light passing through it. If you're blasting 2kJ of light through it, that's 2J of energy absorbed by your lens, which is not going to be healthy.Quote:
Originally Posted by 3dcandy
This is why high power optics almost never use lenses, but instead rely only on mirrors. A mirror generally absorbs fractionally less light than an equivalent lens, but the big advantage is the mirror has a back side you can actively cool.