Patent ID: 8457171

Claim:
A laser amplifier arrangement comprising: an optical pump source for emitting pump radiation; and an axially arranged laser oscillator/amplifier configuration, which is configured to be pumped by the pump radiation, wherein the laser oscillator/amplifier configuration is a laser oscillator which configured to be excited by a part of the pump radiation to emit a laser beam, and comprises a laser amplifier configured to receive both the laser beam and pump radiation so as to amplify the laser beam using the pump radiation, wherein the pump source is configured to introduce the pump radiation into the laser/amplifier configuration at a first longitudinal end of the laser/amplifier configuration, which lies opposite a second longitudinal end of the laser/amplifier configuration at which amplified laser radiation emerges, wherein the laser oscillator and the laser amplifier are arranged coaxially or collinearly with respect to a longitudinal axis of the laser oscillator/amplifier configuration, and wherein the pump source comprises a first beam source configured to generate first pump radiation for pumping the laser oscillator, a second beam source configured to generate second pump radiation for the laser amplifier and a common pump radiation guide device configured to guide both the first and the second pump radiation, by which both the first and the second pump radiation is introduced into the laser oscillator/amplifier configuration at the first longitudinal end for longitudinal pumping in a same direction of the longitudinal axis.