Author:
Klenke A.,Steinkopff A.,Bahri M.,Jauregui C.,Nold J.,Haarlammert N.,Schreiber T.,Tünnermann A.,Limpert J.
Abstract
We present an Ytterbium-doped, multicore, rod-type fiber comprising 49 signal cores. The fiber has already demonstrated kW-level output average powers. Additionally, we provide first results of coherent beam combination of stretched femtosecond pulses.