/sci/ - Science & Math

so I've been thinking about how fiction other than star wars rationalizes the idea of lightsabers actually working
the usual problem that arises when thinking about how to make one that actually works (using just a high-powered laser for a blade, not contained plasma) is "the blade will never end"
but is it impossible to contain a laser beam? could you not potentially build some kind of containment unit to cap the blade, with a photovoltaic system to reduce energy loss?

>>7743634
This kind is more doable. You might need to hook it up to a dedicated electrical substation to get it to cut the way you want it to though.