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Gigawatt peak power-35 fs pulses delivered by fiber amplifier pumped OPCPA system

: Rothhardt, J.; Hädrich, S.; Gottschall, T.; Clausnitzer, T.; Limpert, J.; Tünnermann, A.


Optical Society of America -OSA-, Washington/D.C.:
Advanced Solid-State Photonics, ASSP 2010. CD-ROM : 31.1.-3.2.2010, San Diego, CA, USA
Washington, DC: OSA, 2010 (OSA Technical digest series)
ISBN: 978-1-55752-880-3 (online)
Paper AME2
Technical Conference "Advanced Solid-State Photonics" (ASSP) <2010, San Diego/Calif.>
Conference Paper
Fraunhofer IOF ()

We report on an OPCPA system, which is seeded by a broadband Ti:Sa oscillator. and pumped by a frequency doubled high power picosecond Yb fiber amplifier. Temporal synchronized seed pulses within the Yb gain bandwidth are generated in a photonic crystal fiber. Fiber Bragg gratings spliced to the preamplifiers act as spectral filters to generate 100 ps long pulses. A two- stage birefringent pulse shaper is implemented to create a flat-top temporal pump pulse profile. Direct amplification of these pulses in large mode area fibers without using a stretcher and compressor provides significantly reduced complexity. The parametric amplifier is based on two BBO crystals. It delivers 35 fs, 53 J pulses corresponding to 1.1 GW peak power at 40 kHz repetition rate.