Temporal pulse cleaning by a self-diffraction process for ultrashort laser pulses

Na Xie; Kainan Zhou; Li Sun; Xiaodong Wang; Yi Guo; Qing Li; Jingqin Su

doi:10.1117/12.2071009

18 November 2014 Temporal pulse cleaning by a self-diffraction process for ultrashort laser pulses

Na Xie, Kainan Zhou, Li Sun, Xiaodong Wang, Yi Guo, Qing Li, Jingqin Su

Proceedings Volume 9266, High-Power Lasers and Applications VII; 926604 (2014) https://doi.org/10.1117/12.2071009
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

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.

Citation Download Citation

Na Xie, Kainan Zhou, Li Sun, Xiaodong Wang, Yi Guo, Qing Li, and 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); https://doi.org/10.1117/12.2071009

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