We report on high-energy femtosecond pulse generation from an ytterbium-doped rod-type fiber oscillator emitting around . Self-starting and stable single-pulse operation are demonstrated with of average output power at a repetition rate of . The resulting energy level reaches . Because of the all-normal dispersion of the laser cavity, output pulses are naturally chirped with a duration of . External compression using diffraction gratings shortens the pulse duration down to .
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