Thanks for the comment. Scanning laser path is something like LaserCube is offering, right? I talked to them and they warned that it's a class 4 laser and shouldn't be used anywhere accesible to people for safety.

So yes, basically what I'm looking at the moment is a way to verify the intuition about if that's even possible. Or what minimum size/power is needed to do that ring. And it's either a lot of DIY that are beyound my skills and time at the moment, or some good simulation software. I'm playing with Blender + LuxRender, but it's still too slow on my M1 and it's basically bruteforcing ideas instead of proper design.