500 W average power, multicore fiber-based femtosecond CPA system

Arno Klenke; A. Steinkopff; C. Aleshire; C. Jauregui; Stefan Kuhn; Johannes Nold; Christian Hupel; Sigrun Hein; Steffen Schulze; Nicoletta Haarlammert; Thomas Schreiber; Andreas Tünnermann; Jens Limpert

doi:10.1117/12.2609380

4 March 2022 500 W average power, multicore fiber-based femtosecond CPA system

Arno Klenke, A. Steinkopff, C. Aleshire, C. Jauregui, Stefan Kuhn, Johannes Nold, Christian Hupel, Sigrun Hein, Steffen Schulze, Nicoletta Haarlammert, Thomas Schreiber, Andreas Tünnermann, Jens Limpert

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Proceedings Volume 11981, Fiber Lasers XIX: Technology and Systems; 119810E (2022) https://doi.org/10.1117/12.2609380
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

We present a rod-type, Ytterbium-doped, multicore fiber with 4x4 cores. This fiber is employed in a CPA setup for coherent beam combination of femtosecond pulses. High average powers of up to 507 W after combination and compression could be achieved at 10 MHz repetition rate. A high combination efficiency of 85% could be realized together with an excellent beam quality. Additionally, up to 600 μJ pulse energy was measured in a lower repetition rate configuration.

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Arno Klenke, A. Steinkopff, C. Aleshire, C. Jauregui, Stefan Kuhn, Johannes Nold, Christian Hupel, Sigrun Hein, Steffen Schulze, Nicoletta Haarlammert, Thomas Schreiber, Andreas Tünnermann, and Jens Limpert "500 W average power, multicore fiber-based femtosecond CPA system", Proc. SPIE 11981, Fiber Lasers XIX: Technology and Systems, 119810E (4 March 2022); https://doi.org/10.1117/12.2609380

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