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57 W, 27 fs pulses from a fiber laser system using nonlinear compression

: Eidam, T.; Röser, F.; Schmidt, O.; Limpert, J.; Tünnermann, A.


Applied Physics. B 92 (2008), No.1, pp.9-12
ISSN: 0340-3793
ISSN: 0721-7269
ISSN: 0946-2171
ISSN: 1432-0649
Journal Article
Fraunhofer IOF ()
photonic crystal fiber; optical pulses

We report on the generation of 27 fs pulses with an average output power of 57 W and a repetition rate of 78 MHz. The pulses are generated by combining a high average power fiber chirped pulse amplification (FCPA) system with a microstructured large-mode-area fiber for nonlinear compression. The FCPA system delivers 270 fs pulses in a linearly polarized beam with diffraction-limited quality. Nonlinear compression is achieved by launching the pulses into a short (few cm) piece of microstructured fiber and subsequent compression by a pair of chirped mirrors.