Patent ID: 7991038
Filing Date: 2011-08-02
Classification: H01S

Abstract:
1. A Laser arrangement, in particular for producing or amplifying femto- or picosecond pulses, comprising: a laser medium for producing a laser emission, a laser resonator having a beam path with a length of at least 20 cm, having at least one end mirror, wherein the beam path within the laser resonator is formed at least partly by free-beam optics, wherein a resonator element arranged in the beam path and having at least two optical surfaces as surfaces interacting with a radiation led via the beam path, the at least two optical surfaces being rigidly connected to one another and arranged together in the beam path, in such a way that, on tilting by an angle error, substantially the at least two optical surfaces have the same effect on guidance of the beam path but with an opposite sign, so that mutual compensation of tilt errors takes place, based on a shift-sensitive reference point.