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Laser Launch into Orbit

(toughsf.blogspot.com)
60 points EA-3167 | 1 comments | 13 Apr 25 00:16 UTC | HN request time: 0.203s | source
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lupusreal ◴[15 Apr 25 10:24 UTC] No.43690983[source]▶
> Fibre lasers, where hundreds of tiny beams are joined through optical fibres into a larger beam

I'm no laser expert, but this doesn't seem right to me.

replies(3): >>43691315 #>>43691353 #>>43691747 #
1. pfdietz ◴[15 Apr 25 12:25 UTC] No.43691747[source]▶
IEEE Spectrum had their usual interesting in-depth look at this a few years ago, for military fiber lasers.

https://spectrum.ieee.org/fiber-lasers-mean-ray-guns-are-com...

The technique appears to involve multiple lasers of slightly different wavelength; this allows the beams to be combined and to not interfere with each other.