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Opt Express. 2011 Nov 21;19(24):24280-5. doi: 10.1364/OE.19.024280.

Coherently-combined two channel femtosecond fiber CPA system producing 3 mJ pulse energy.

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  • 1Institute of Applied Physics, Friedrich-Schiller-University Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany.


We present a fiber CPA system consisting of two coherently combined fiber amplifiers, which have been arranged in an actively stabilized Mach-Zehnder interferometer. Pulse durations as short as 470 fs and pulse energies of 3 mJ, corresponding to 5.4 GW of peak power, have been achieved at an average power of 30 W.

© 2011 Optical Society of America

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