Baumgartl, M.Ortaç, B.Lecaplain, C.Hideur, A.Limpert J.Tünnermann, A.2016-02-082016-02-0820101469592http://hdl.handle.net/11693/22271We report on high-energy ultrashort pulse generation from an all-normal-dispersion large-mode-area fiber laser by exploiting an efficient combination of nonlinear polarization evolution (NPE) and a semiconductor-based saturable absorber mode-locking mechanism. The watt-level laser directly emits chirped pulses with a duration of 1 ps and 163 nJ of pulse energy. These can be compressed to 77 fs, generating megawatt-level peak power. Intracavity dynamics are discussed by numerical simulation, and the intracavity pulse evolution reveals that NPE plays a key role in pulse shaping. © 2010 Optical Society of America.EnglishChirped pulseDissipative solitonsHigh energyIntracavitiesLarge-mode-area fiber laserModelockingNonlinear polarization evolutionNumerical simulationPeak powerPulse energiesPulse evolutionPulse-shapingSaturable absorbersUltrashort pulse generationComputer simulationFiber lasersLaser mode lockingPulsed laser applicationsSemiconductor lasersSolitonsPulse generatorsArticle10.1364/OL.35.002311