Abstract: In order to operate a laser amplifier system comprising a solid-state body thermally coupled to a cooling member and having a laser active volume area, in which at least one laser-active amplifier structure consisting of semiconductor material is arranged in at least one surface and extends at least over partial areas of the surface, a pumping radiation source generating a pumping radiation field for the optical pumping of the laser-active volume area and an optical means of the amplifier defining a laser amplifier radiation field passing through the laser active volume area, as efficiently as possible it is suggested that the absorption of pumping radiation from the pumping radiation field in the laser-active amplifier structure be equal to or greater than the absorption of pumping radiation by a surrounding structure adjacent to the amplifier structure and that the pumping radiation field proceed such that it passes several times through the amplifier structure.

Abstract: In order to operate a laser amplifier system comprising a solid-state body thermally coupled to a cooling member and having a laser active volume area, in which at least one laser-active amplifier structure consisting of semiconductor material is arranged in at least one surface and extends at least over partial areas of the surface, a pumping radiation source generating a pumping radiation field for the optical pumping of the laser-active volume area and an optical means of the amplifier defining a laser amplifier radiation field passing through the laser active volume area, as efficiently as possible it is suggested that the absorption of pumping radiation from the pumping radiation field in the laser-active amplifier structure be equal to or greater than the absorption of pumping radiation by a surrounding structure adjacent to the amplifier structure and that the pumping radiation field proceed such that it passes several times through the amplifier structure.