Patent ID: 7218651

Claim:
An arrangement for generating a pulsed laser beam with high average output, in particular for generating a hot plasma which emits extreme ultraviolet (EUV) radiation, comprising: a plurality of light sources wherein each one of the plurality of light sources is associated with a corresponding one of a plurality of differently inclined mirror surfaces in order to achieve defined secondary light source images, in such a way that a light beam that is emitted by each of the light sources so as to be offset with respect to time is coupled into a common beam path at the corresponding differently inclined mirror surface as a reflected beam bundle; said plurality of light sources being pulsed lasers and being triggered differently in such a way that laser pulses of all individual lasers in the common beam path are directed to a target one after the other in a regular, defined pulse sequence; means for providing a continuously dynamic mirror movement for orienting the mirror surface for coupling the laser pulses of the individual lasers into the common beam path; and optical means being provided in the common beam path for compensating a change in angle of the beam bundles for the duration of each individual laser pulse in order to achieve a temporally and spatially constant beam quality on the target for the duration of every laser pulse wherein a point of intersection of all of the laser beams of the individual lasers is imaged by the optical means as an object of an optically reduced image in an image plane on the target.