18 November 2014 Temporal pulse cleaning by a self-diffraction process for ultrashort laser pulses
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Abstract
Applying the self-diffraction process to clean ultrashort laser pulses temporally is a recently developed effective way to temporal contrast enhancement. In this paper, we attempt to clean ultrashort laser pulses temporally by the self-diffraction process. Experiments were carried out to study the temporal contrast improvement in the front-end system of an ultraintense and ultrashort laser facility, i.e. the super intense laser for experiment on the extremes (SILEX-I). The results show that the maximum conversion efficiency of the first-order self-diffraction (SD1) pulse is 11%. The temporal contrast of the SD1 signal is improved by two orders of magnitude, i.e. to 103, for a 2.4-ns prepulse with initial contrast of ~10. For a 5.5 -ns prepulse with initial contrast of 2×103, the temporal contrast of the SD1 signal is improved by more than three orders of magnitude.
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Na Xie, Na Xie, Kainan Zhou, Kainan Zhou, Li Sun, Li Sun, Xiaodong Wang, Xiaodong Wang, Yi Guo, Yi Guo, Qing Li, Qing Li, Jingqin Su, Jingqin Su, } "Temporal pulse cleaning by a self-diffraction process for ultrashort laser pulses", Proc. SPIE 9266, High-Power Lasers and Applications VII, 926604 (18 November 2014); doi: 10.1117/12.2071009; https://doi.org/10.1117/12.2071009
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