What is lasercutting?
A lasercutter is a CNC machine, a computer-driven machine which can cut and engrave materials with a powerful laser.
Lasercutting is, just like 3D printing, a kind of rapid prototyping. Rapid prototyping is a way of manufacturing that greatly reduces time to make a product from your idea. In this way you have in a short time a tangible product of your idea, an ideal way for making prototypes.
Fortunately, lasercutting has many more applications than making prototypes. With laser engraving a small layer of material is burned. Therefore almost any material may be provided with a logo or text. For example, wood, acrylic, stainless steel plate, glass, leather and more.
Besides is a video that explains the principle of lasercutting much better.