title: Coherent combination of spectrally broadened femtosecond pulses for nonlinear compression.
abstract: The coherent combination of ultrashort pulses has recently been established as a technique to overcome the limitations of laser amplifiers regarding pulse peak-power, pulse energy, and average power. Similar limitations also occur in nonlinear compression setups. In a proof-of-principle experiment, we show that the techniques developed for the combination of amplifiers can be adapted to nonlinear compression. We create two spatially separated pulse replica that undergo self-phase modulation in independent optical fibers and are recombined afterwards. Using this technique we demonstrate operation above the self-focusing threshold of a single pulse. Furthermore, we prove that the recombined pulses can be temporally compressed. This experiment paves the way for higher energy or average power operation of various nonlinear compression setups.
authors: Arno
authors: A
authors: Klenke
authors: Steffen
authors: S
authors: Hädrich
authors: Marco
authors: M
authors: Kienel
authors: Tino
authors: T
authors: Eidam
authors: Jens
authors: J
authors: Limpert
authors: Andreas
authors: A
authors: Tünnermann