Patent ID: 9484709
Filing Date: 2016-11-01
CPC Classification: G02B,H01S

Claim Text:
1. An optical amplifier arrangement for amplifying ultra-short pulsed laser radiation comprising a mode-locked laser; two or more optical amplifiers arranged downstream of the laser in the propagation direction of the laser radiation; at least one splitting element which splits the pulsed laser radiation between a plurality of amplifier channels arranged between the laser and the optical amplifiers, wherein each amplifier channel has at least one optical amplifier and wherein the at least one splitting element is a polarizing beam splitter; and at least one common combination element disposed downstream of the amplifier channels configured to superimpose the pulsed laser radiation amplified in the amplifier channels, wherein the at least one common combination element comprises sequentially arranged polarizing beam splitters; wherein polarization of the laser radiation is rotated between the sequentially arranged beam splitters by wave plates or the sequentially arranged polarizing beam splitters are rotated relative to each other to enable further combination.