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Divided-pulse amplification for terawatt-class fiber lasers

: Eidam, T.; Kienel, M.; Klenke, A.; Limpert, J.; Tünnermann, A.


European physical journal special topics 224 (2015), Nr.13, S.2567-2571
ISSN: 1951-6355
ISSN: 1951-6401
Bundesministerium für Bildung und Forschung BMBF
13N12082; NEXUS
European Commission EC
FP7; 617173; ACOPS
Fraunhofer IOF ()

The coherent combination of ultra short laser pulses is a promising approach for scaling the average and peak power of ultrafast lasers. Fiber lasers and amplifiers are especially suited for this technique due to their simple singe-pass setups that can be easily parallelized. Here we propose the combination of the well-known approach of spatially separated amplification with the technique of divided-pulse amplification, i.e. an additionally performed temporally separated amplification. With the help of this multidimensional pulse stacking, laser systems come into reach capable of emitting 10's of joules of energy at multi-kW average powers that simultaneously employ a manageable number of fibers.