Can you put a laser in lightsaber?

While it is theoretically possible to create a lightsaber-like device using advanced technology, it's not feasible with our current understanding of physics and materials. A true lightsaber, as depicted in science fiction, would require a focused beam of high-energy plasma contained within a magnetic field. Generating and maintaining such a beam would pose significant technical challenges, including extreme heat management and power requirements, which are beyond current technological capabilities.