High-power laser amplifier head

A laser amplifier head comprising a plurality of plates of a solid-state laser active medium disposed in a housing, arranged parallel to one another with their main surfaces facing one another, the housing being provided with an inlet port and an outlet port for a cooling liquid, and also at least one window allowing a laser beam to pass through the laser active medium plates, characterized in that it also comprises:

• a mechanical connection device allowing a cyclic movement at least of the laser active medium plates in relation to the laser beam in a plane (xy) perpendicular to the direction (z) of the thickness of the solid-state laser active medium plates;
• and
• cooling liquid guide plates arranged in the extension of the solid-state laser active medium plates, between the solid-state laser active medium plates and the inlet port of said liquid.