LASER SYSTEM WITH SUPERPOSITIONING OF TEMPORALLY OR SPATIALLY SEPARATE LASER PULSES

摘要

The invention relates to a laser system comprising the following: - at least one laser pulse source (1) which generates input laser pulses (7) at an input repetition frequency, - at least one combination element (8, 10) which superpositions two or more of the input laser pulses (7) in a respective output laser pulse (11) and thus generates an output laser pulse train at an output repetition frequency, wherein the combination element (8, 10) is paired with at least one phase adjustment element (14, 15) which influences the relative phase position of the input laser pulses (7) superpositioned in the output laser pulse (11), - an error signal detector (16) which derives an error signal (18) from the output laser pulse, and - a regulator (19) which forms a regulating signal (20) from the error signal (18) in order to actuate the phase adjustment element (14, 15). The aim of the invention is to provide a laser system that is improved compared to the prior art and comprises an actively stabilized combination of temporally and spatially separate input laser pulses into high-power output laser pulses. This is achieved by the invention in that the error signal detector (16) periodically scans the output laser pulse train at the output repetition frequency. Alternatively, the error signal detector (16) evaluates the current power level of the output laser pulse train. The invention further relates to a method for generating laser pulses.