Abstract

Power scaling of ultrafast fiber lasers has been accelerated by coherent beam combination [1]. Persisting challenges regarding the average power, i.e. mode instabilities, or regarding the peak power, i.e. high nonlinear phase, can be easily overcome by using several parallel amplifiers in a stabilized interferometer configuration. In this contribution, we present a new record average power for ultrafast laser systems enabled by coherent beam combination and the use of partially-reflective dielectric mirrors as high- power compatible combining element.

© 2019 IEEE

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