Abstract
We report on a compact double-stage ytterbium-doped-fiber chirped-pulse amplifier system delivering high temporal quality pulses of energy at a repetition rate of resulting in a peak power of . The recompression down to 1.1 times the Fourier limit is based on the exploitation of nonlinear phase shifts associated with mismatched stretcher–compressor units. A 1-m-long ytterbium-doped core diameter photonic crystal fiber is implemented as the power amplifier and allows the production of pulses before compression with an accumulated B integral of throughout the amplification stages.
© 2008 Optical Society of America
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