Breitkopf, SvenSvenBreitkopfEidam, TinoTinoEidamGrafenstein, Lorenz vonLorenz vonGrafensteinKlenke, ArnoArnoKlenkeCarstens, HenningHenningCarstensHolzberger, SimonSimonHolzbergerPupeza, IoachimIoachimPupezaFill, ErnstErnstFillSchreiber, ThomasThomasSchreiberLimpert, JensJensLimpertKrausz, FerencFerencKrauszTünnermann, AndreasAndreasTünnermann2022-03-122022-03-122014https://publica.fraunhofer.de/handle/publica/38403210.1117/12.2037327Novel laser applications such as laser-wake-field acceleration of particles require extreme parameters from ultra-short-pulse systems. We propose a concept capable to realize simultaneously multi-TW peak powers and multi-kW average powers by employing spatially and temporally separated amplification of chirped laser pulses delivered by fiber-amplifiers. As a combining element for the temporally 100 ns separated pulses (10 MHz repetition rate) we suggest a non-steady-state enhancement cavity using a fast switching-element to dump out the enhanced pulses at 15 kHz.encoherent combiningcavity enhancementstack and dumpfemtosecond pulsesfiber laserhigh powerhigh energyconference paper