resonator

A laser resonator is an optical system that is responsible for creating and maintaining a coherent and focused laser beam. The resonator consists of two or more lenses or mirrors that reflect laser light into the center. The laser light is reflected between the lenses or mirrors until the appropriate power and coherence are achieved.

A laser resonator is a key component of a laser because it is responsible for creating a coherent and focused beam of light, which is essential for many applications such as laser machining, laser scanning, 3D printing, etc.

A laser resonator is also responsible for shaping the laser beam and controlling its size, which is important for precision material processing.