What is the primary function of mirrors in laser delivery systems?

In the context of laser delivery systems, mirrors primarily serve to deflect the beam. This function is crucial for directing the laser light along the desired path towards the target area. Mirrors are designed to reflect light efficiently, allowing for the precise manipulation of the beam's trajectory, which is essential for achieving accurate targeting in various applications, such as laser surgery or material processing.

While focusing the beam is indeed an important aspect of laser systems—usually achieved with lenses—mirrors primarily redirect the beam rather than modify its focus. Similarly, amplifying the beam typically requires a gain medium rather than a mirror, although mirrors can be involved in optical cavities where amplification occurs. Splitting the beam is accomplished through beam splitters or specialized optics rather than mirrors alone. Therefore, the main role mirrors play in laser systems is their ability to effectively deflect and direct the laser beam as needed.