Patent ID: 8599896

Claim:
Laser amplifier system, comprising: a resonator with optical resonator elements determining a course of a resonator radiation field propagating along an optical axis, the resonator being designed as a split resonator and having a first resonator section extending from a first virtual plane of separation and a second resonator section extending from a second virtual plane of separation, the resonator sections being dimensioned optically such that the resonator radiation field has radiation field states corresponding to the same resonator modes in each of the virtual planes of separation, an amplifying unit optically independent of the resonator arranged between the first and the second virtual planes of separation, said amplifying unit comprising at least one laser-active medium and coupling the radiation field states corresponding to the same resonator modes in a quasi-neutral manner with respect to the resonator modes, the amplifying unit comprises at least one amplifier module having the at least one laser-active medium, the at least one amplifier module behaving in an optically quasi-neutral manner with respect to the resonator modes, and the at least one amplifier module being coupled to the virtual planes of separation in an optically quasi-neutral manner.