Fiber laser
https://monportlaser.com/collections/fiber-laser-engraver
What is fiber laser engraving? Well, if you have ever used a lens to make a fire, then you probably know that the lens focuses light from the sun and converts it into heat that can cause burning. Similarly, the fiber laser engraving machine generates strong light at the end of the fiber optic cable, and then generates a powerful laser beam. Then use this beam to engrave (or even cut) patterns on different materials.