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  4. Coherent combination of spectrally broadened femtosecond pulses for nonlinear compression
 
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2014
Journal Article
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.
Author(s)
Klenke, Arno
Hädrich, Steffen
Kienel, Marco
Eidam, Tino
Limpert, Jens  
Tünnermann, Andreas  
Journal
Optics Letters  
DOI
10.1364/OL.39.003520
Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
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