One issue with a laser sword (light saber) is stopping the light beam at a desired length, There have different designs to re create-create a similar effect using lasers and plasma, usually with some sort of internal coil or a bar running the length of the sword.
The idea I have in mind will work best with lasers and to stop the laser will be a drone at the tip of the sword acting as the mirror to reflect the laser back and give it length. The drone can use the laser to lock onto its position and even use some of the energy to power itself. It would limit the strikes to only along the length of blade and not the tip.
Is this possible that a drone could be used as the reflector end of the light sword?
