Patent ID: 8811437

Claim:
Laser device with phase front regulation, the laser device comprising: a) a resonator with a beam path, a laser medium located within the resonator for generation of a working laser beam, a first resonator mirror located adjacent to the laser medium, and a second resonator mirror located adjacent to a phase front sensor, and a phase front regulating unit located within the resonator, the beam propagating back and forth many times within said beam path, b) a coupling element configured to couple a measuring laser beam of a measuring laser device into the beam path of the resonator, c) an uncoupling element configured to uncouple the measuring laser beam from the resonator, and d) a phase front controller and the phase front sensor; and wherein the resonator comprises: 1) the measuring laser beam first impacts the coupling element, then the laser medium, then the phase front regulating unit, then the uncoupling element, and then the phase front sensor, 2) a disturbance of the phase front of the laser medium is transferred to the measuring laser beam, 3) a disturbance of the measuring laser beam, and thereby that of the working laser beam, is corrected by the phase front regulating unit, 4) sensor data is received from the phase front sensor and is processed by the phase front controller, and 5) regulating unit signals for the phase front regulating unit generated by the phase front controller.