Laser arrangement and method for increasing the lifetime of optical elements in a laser arrangement

摘要

The invention relates to a laser arrangement comprising a first optical element (3) which is provided and arranged to convert a first laser beam (1) at a first frequency into a second laser beam (2) at a second frequency, the second frequency being greater is the first frequency, and having a second optical element (5), which is transparent to the first laser beam (1) and reflective to the second laser beam (2), and which is designed and arranged for the second laser beam (2) in a reflection direction (R) to reflect. The laser arrangement is characterized in that both the first optical element (3) and the second optical element (5) are movably mounted such that they can be moved relative to a light propagation direction of the second laser beam (2). The invention further relates to a method for increasing the lifetime of optical elements in such a laser arrangement.