Laser system with superposition of temporally or spatially separate laser pulses

摘要

The invention relates to a laser system having - 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 comprises two or more of the input laser pulses (7) in each case an output laser pulse (11). superimposed to produce a Ausgangslaserpulszug at a Ausgangsrepetitionsfrequenz, wherein the combination element (8, 10) is associated with at least one Phasenstellelement (14, 15), which affects the relative phase of the output laser pulse (11) superimposed input laser pulses (7), - an error signal detector (16), which derives an error signal (18) from the output laser pulse train, and - a controller (19) which forms from the error signal (18) a control signal (20) for driving the phase adjusting element (14, 15). The object of the invention is to provide a comparison with the prior art improved laser system with actively stabilized combination of temporally and spatially separate input laser pulses to output laser pulses high power. This object is achieved by the invention in that the error signal detector (16) periodically samples the output laser pulse train at the output repetition frequency. Alternatively, the invention proposes that the error signal detector (16) assesses the instantaneous power of the output laser pulse train. Moreover, the invention relates to methods for generating laser pulses.