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Coherent beam combination of pulses emitted by a 16-core ytterbium-doped fiber

: Klenke, A.; Müller, M.; Stark, H.; Stutzki, F.; Hupel, C.; Schreiber, T.; Tünnermann, A.; Limpert, J.


Carter, A.L. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Fiber lasers XVI. Technology and systems : 4-7 February 2019, San Francisco, California, United States
Bellingham, WA: SPIE, 2019 (Proceedings of SPIE 10897)
ISBN: 978-1-5106-2437-5
ISBN: 978-1-5106-2436-8
Paper 108971A, 6 S.
Conference "Fiber Lasers - Technology and Systems" <16, 2018, San Francisco/Calif.>
LASE Conference <2018, San Francisco/Calif.>
European Commission EC
670557; MIMAS
Multi-dimensional interferometric amplification of ultrashort laser pulses
Fraunhofer IOF ()

We present a laser amplifier based on coherent combination of 16 channels from a single multicore fiber employing multi-channel components for beam splitting, combination and temporal phasing. Stretched femtosecond pulses (250 fs transform-limit) were combined with an efficiency of 80% at up to 205 W average power.