Star Wars universe does have lasers of all scales and power levels.
Yet literally no one uses them well on a personal scale.
The Jedi (and Sith for that matter) imbue it with a power of magical stone, and then…use it as a saber.
To balance this stupidity, stormtroopers, clones and droids all use slow, non-continuous energy blasters. With actual lasers, they could insta-kill any Jedi, but they cannot, because otherwise the movie wouldn’t exist.
Not quite sure if I am understanding you correctly, but I think you are saying it isn’t like, a flat, edged geometry…
…its more like a sort of … very angry, ‘fuzzy’, elongated cylinder with a roughly hemispherical ‘endcap’.
And the sort of… exit point, or emmitting point of the ‘blade’ is… more like an camera aperture or a nozzle.
But you also say this O, this eye of the needle… is spinning?
That is a bit of lore I am not familiar with, could you expand on that?
…
But yeah, lightsabers work internally differently than say, the Mandalorian Darksaber… which actually is a proper blade, and uses… some other kind of arcane way to generate and sustain itself, I’m not up to snuff on that lore.
Also just kind of as a general addendum:
There are various materials in the Star Wars universe that can deflect or totally decohere and disperse the … ‘coherence field’ of plasma bolts / saber blades.
The Imperial Guards have pikes, staffs that are made of some kind of metal alloy, which can block lightsaber blades, and presumably also deflect blaster bolts.
They may be made out of Beskar, the same material as Mando’s armor? I am not sure.
Also, the uh… whatever the Darth Smiley’s helmet is made out of in The Acolyte… while I think that show is basically a complete mess both as a show and in lore terms… that material/alloy, cortosis, is actually present in a good deal of the older canon, and it seems to have some kind of ability to nullify, extinguish, not just repel, the ‘coherence field’ of most other ‘plasma’ based weapons.
I’m sure there are other references, too, but for it to be a power current it needs to flow to and from a terminus. See also the Tagge Protoblade in which the energy circles around a metal core (internally referred to as the corn dog lightsaber) instead of being a sword
I get that, sort of, that… some kind of supernatural/extradimensional energy is essentially drawn into, and then focused by the kyber crystals and the modulation systems of a light saber…
I just had not heard that they involved a mechanically spinning component.