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Buberl, Theresa; Alismail, Ayman; Wang, Haochuan; Karpowicz, Nicholas; Fattahi, Hanieh (2016): Self-compressed, spectral broadening of a Yb:YAG thin-disk amplifier. In: Optics Express, Vol. 24, No. 10, UNSP 259464
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We demonstrate pulse shortening of 1-ps Yb:YAG thin-disk regenerative amplifier to 500 fs by cross-polarized wave generation (XPW) in a 6 mm BaF2 crystal. The process is self-compressed and has 8.5% conversion efficiency corresponding to 18 mu J energy. Our theoretical and experimental investigation shows that the factor of root 3 spectral broadening and pulse shortening in ps-XPW-generation only happens in unsaturated regime. We demonstrate that the initial spectral chirp affects the spectral broadening and pulse shortening of XPW pulses. (C) 2016 Optical Society of America