Adaptive pre-amplification pulse shaping in a high-power, coherently combined fiber laser system

Nils C. Becker, Steffen Hädrich, Tino Eidam, Florian Just, K. Osvay, Zoltán Várallyay, Jens Limpert, Andreas Tünnermann, Thomas Pertsch, Falk Eilenberger

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Abstract

We report on the successful implementation of an adaptive pre-amplification pulse shaping technique in a high-power, coherently combined fiber laser system to achieve sub-300-fs pulse durations at 320 W average power and 3.2 mJ pulse energy. The pulse shaper is utilized to impose a gain flattening mask to increase the spectral width of the amplified pulse by 60%. Simultaneously, it pre-compensates the spectral phase acquired in the multi-stage amplification and subsequent compression including the eight-channel, coherently combined main amplification stage. This result does significantly enhance the performance of the fiber laser system and the subsequent nonlinear compression stages.

Original languageEnglish
Pages (from-to)3916-3919
Number of pages4
JournalOptics Letters
Volume42
Issue number19
DOIs
Publication statusPublished - Oct 1 2017

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Becker, N. C., Hädrich, S., Eidam, T., Just, F., Osvay, K., Várallyay, Z., Limpert, J., Tünnermann, A., Pertsch, T., & Eilenberger, F. (2017). Adaptive pre-amplification pulse shaping in a high-power, coherently combined fiber laser system. Optics Letters, 42(19), 3916-3919. https://doi.org/10.1364/OL.42.003916