Paper
15 February 2012 High peak and average power generation by cascaded nonlinear compression of fiber CPA system
Steffen Hädrich, Jan Rothhardt, Henning Carstens, Stefan Demmler, Thomas Gottschall, Jens Limpert, Andreas Tünnermann
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Abstract
Numerical and analytical considerations of nonlinear compression in noble-gas-filled hollow core fiber pulse compressors are shown. Experiments are presented that enhance the peak power of existing fiber CPA architectures from 1.8 GW to 7.4 GW in a single stage. The pulses are shortened to 40 fs, which corresponds to a pulse shortening of more than one order of magnitude. Sending these pulses into a second hollow fiber further shortens the pulses to 25 fs at a pulse energy of 430 μJ at 30 kHz equaling an average power of 13 W. The peak power after the second stage is higher than 10 GW. In addition, we present very recent experiments on average power scaling of hollow fiber pulse compressors to the 100 W level. We compressed 200 W, 200 μJ, 500 fs pulses from a fiber CPA to 93 W, 93 μJ, 81 fs. These unique pulse parameters should be very well suited for high harmonic generation.
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Steffen Hädrich, Jan Rothhardt, Henning Carstens, Stefan Demmler, Thomas Gottschall, Jens Limpert, and Andreas Tünnermann "High peak and average power generation by cascaded nonlinear compression of fiber CPA system", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82371O (15 February 2012); https://doi.org/10.1117/12.907883
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KEYWORDS
Complex systems

Mirrors

Noble gases

Fiber lasers

Ultrafast phenomena

High harmonic generation

Laser systems engineering

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