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3.5 kW four-channel coherently combined ultrafast fiber laser

: Müller, M.; Klenke, A.; Steinkopff, A.; Shestaev, E.; Tünnermann, A.; Limpert, J.


Institute of Electrical and Electronics Engineers -IEEE-:
Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 : 23-27 June 2019, Munich, Germany
Piscataway, NJ: IEEE, 2019
ISBN: 978-1-7281-0469-0
ISBN: 978-1-7281-0470-6
Conference on Lasers and Electro-Optics Europe (CLEO Europe) <2019, Munich>
European Quantum Electronics Conference (EQEC) <2019, Munich>
Conference Paper
Fraunhofer IOF ()

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.