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4 March 2015 22GW peak power femtosecond fiber CPA system
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Abstract
Over the last decade, the performance of femtosecond fiber laser systems has been rapidly improved. However, further improvements might be held back due to different physical limitations such as nonlinearities or optically induced damage. We demonstrate that with the coherent combination of four parallel fiber amplifiers record pulse energies and peak-powers of 5.7 mJ and 22 GW, respectively, could be achieved. These values could be realized with a chirped-pulse-amplification (CPA) laser system running at a repetition rate of 40 kHz and delivering a compressed average power of 230 W. A high combination efficiency of 89% was achieved demonstrating the scalability of the combining approach to a larger number of channels.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Arno Klenke, Steffen Hädrich, Tino Eidam, Jan Rothhardt, Marco Kienel, Armin Hoffmann, Stefan Demmler, Thomas Gottschall, Jens Limpert, and Andreas Tünnermann "22GW peak power femtosecond fiber CPA system", Proc. SPIE 9344, Fiber Lasers XII: Technology, Systems, and Applications, 93441A (4 March 2015); https://doi.org/10.1117/12.2079193
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