Abstract
Laser processes use a laser beam to perform cutting, brazing, welding, or, other operations on different materials, the laser being positioned using elements of the system, such as discrete adjustment of positioning elements or dynamic movement of the laser head. For systems using high-energy lasers, the elements therein—including those which facilitate movement—may suffer from thermal difficulties. Disclosed herein is an optical head for use in a high-powered laser cutting system. In disclosed systems, the optical head includes a focusing lens having a shorter focal length than the desired working distance of the system. Further disclosed are systems which use this optical head, allowing for the desired positioning of the focus as well as magnification of the system's image. Use of the disclosed laser head within a high-powered laser system may allow for reduced thermal load on sensitive components and contamination.