Limpert, J.Eidam, T.Baumgartl, M.Röser, F.Plötner, M.Ortaç, B.Nolte, S.Tünnermann, A.2018-04-122018-04-1220160342-4111http://hdl.handle.net/11693/38362This chapter reviews the fundamentals and achievements of ultrashort pulse generation and amplification in ytterbium-doped fibers. Compact and ultrastable passively mode-locked fiber oscillators represent an ideal seed source for high performance femtosecond fiber amplification systems, which have been scaled towards kW-level average power and pulse energies well above the mJ-level. These laser systems will have significant impact in numerous scientific and industrial applications.EnglishPulse energyStimulate raman scatteringPhotonic crystal fiberStimulate brillouin scatteringMaster oscillator power amplifierCompact ultrafast oscillators and high performance ultrafast amplifiers based on ytterbium-doped fibersBook Chapter10.1007/978-3-319-17659-8_41556-1534