Multi pass - laser amplification system and method for correcting an asymmetrical, transverse laser beam pressure profile in a solid body having a laser active medium

摘要

A multi pass - laser amplification system, comprising a a laser-active medium, and having a solids content of defining a transversal plane, the rear side with a highly reflective coating for a laser radiation field to be amplified is provided, and an imaging device for the multiple imaging and multiple deflection of the laser radiation field, so that this times through the solid body for amplifying the laser-active medium, which an imaging device at least one imaging member for mapping of the laser radiation field and a plurality of deflector units for deflecting the laser radiation field, wherein the at least one imaging member and the plurality of deflection units are arranged relative to one another in such a way that the laser radiation field according to the first impinging at a first image position on the imaging member the solid body at least once, and in particular several times in a plurality of cycles, for amplifying the laser radiation field passes through, so that the beam quality is improved in the case of a solid state laser, it is proposed that the at least one imaging member and the plurality of deflection units are arranged in such a way that in a transversal plane defined by the solid body, the vector sum of all the transverse components of the plurality of cycles of the laser radiation field on the basis of the laser radiation pressure of the laser radiation field on the solid-state radiation pressure forces acting zero or is substantially zero or has a minimum.