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Worldbuilding

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    $\begingroup$ what does that have to do with propulsion if you want to use it as a sword? $\endgroup$ Commented May 25, 2025 at 21:13
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    $\begingroup$ @JBH I edited the question with what you asked $\endgroup$ Commented May 25, 2025 at 21:40
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    $\begingroup$ Keep in mind that even if you build such a thing, it will still cut like a blowtorch and not like a sword, i.e., with a slow, even cutting motion, not a fast slice. The target material needs to spend time in the beam to be cut, so the faster you move it the less effective it will be. $\endgroup$ Commented May 26, 2025 at 0:27
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    $\begingroup$ Thanks, @Fulano. I've deleted my other comments and +1. $\endgroup$ Commented May 26, 2025 at 2:59
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    $\begingroup$ The problem with this question is the hard-science tag. I doubt that anyone could answer this without experimentation, and questions with this tag require citations, which I doubt will exist. Consider science-based instead? $\endgroup$ Commented May 26, 2025 at 11:05