7 March 2014 High-pulse energy and average-power ultrashort laser pulses via nonlinear compression of coherently combined fiber CPA system
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Abstract
Coherent combination applied to state-of-the-art femtosecond fiber CPA systems has recently opened the route towards high energy and average power laser systems. The ~2 mJ, 340 fs, 196 W (100 kHz) pulses of such a system are coupled to an argon-filled hollow-core fiber for spectral broadening via self-phase modulation. Subsequent compression in a chirped mirror compressor leads to ~1 mJ, 45 fs, 96 W pulses. Under different conditions 580 μJ, 26 fs, 11.6 GW, 135 W (250 kHz) pulses are achieved. This is an unprecedented combination of average power and pulse energy.
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Steffen Hädrich, Arno Klenke, Armin Hoffmann, Tino Eidam, Thomas Gottschall, Jan Rothhardt, Jens Limpert, Andreas Tünnermann, "High-pulse energy and average-power ultrashort laser pulses via nonlinear compression of coherently combined fiber CPA system", Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89611E (7 March 2014); doi: 10.1117/12.2039603; https://doi.org/10.1117/12.2039603
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