title: Multi-gigawatt ultrashort pulses at high repetition rate and average power from two-stage nonlinear compression.
abstract: We present simple and compact (1.5m x 0.5m footprint) post-compression of a state-of-the-art fiber chirped pulse amplification system. By using two stage nonlinear compression in noble gas filled hollow core fibers we shorten 1 mJ, 480 fs, 50 kHz pulses. The first stage is a 53 cm long, 200 µm inner diameter fiber filled with xenon with subsequent compression in a chirped mirror compressor. A 20 cm, 200 µm inner diameter fiber filled with argon further broadens the spectrum in a second stage and compression is achieved with another set of chirped mirrors. The average power is 24.5 W/19 W after the first/second stage, respectively. Compression to 35 fs is achieved. Numerical simulations, agreeing well with experimental data, yield a peak power of 5.7 GW at a pulse energy of 380 µJ making this an interesting source for high harmonic generation at high repetition rate and average power.
authors.affiliation: Friedrich Schiller University Jena, Institute of Applied Physics, Albert-Einstein-Strasse 15, 07745 Jena, Germany. haedrich@iap.uni-jena.de
authors.forename: S
authors.initials: S
authors.lastname: Hädrich
authors.forename: H
authors.initials: H
authors.lastname: Carstens
authors.forename: J
authors.initials: J
authors.lastname: Rothhardt
authors.forename: J
authors.initials: J
authors.lastname: Limpert
authors.forename: A
authors.initials: A
authors.lastname: Tünnermann