文献类型：期刊文献

英文题名：Coherent control of high-order harmonic generation by phase jump pulses

作者：Xiang, Yang[1];Niu, Yueping[2];Feng, Hongmei[1];Qi, Yihong[2];Gong, Shangqing[2]

机构：[1]Henan Polytech Univ, Sch Comp Sci & Technol, Jiaozuo 454000, Peoples R China;[2]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China

年份：2012

卷号：20

期号：17

起止页码：19289

外文期刊名：OPTICS EXPRESS

收录：;EI(收录号：20123615400669);WOS:【SCI-EXPANDED(收录号:WOS:000307873600080)】；

基金：This work was supported by the National Nature Science Foundation of China (Grant Nos. 11074263, 60978013, and 60921004), the high-performance grid computing platform of and the Doctor Fund of Henan Polytechnic University (Grant No. B2011-076).

语种：英文

外文关键词：Harmonic generation

摘要：We theoretically investigate the high-order harmonic generation driven by laser pulses with a pi-phase jump. The cutoff of high-order harmonic spectrum extends dramatically due to the phase jump which enlarges the asymmetry of the laser field. We find that the intensity and the coherence of the continuum can be controlled by the jump time. By selecting proper frequency of the continuum spectrum, a sub-100-attosecond pulse can be generated without any phase compensation. (C) 2012 Optical Society of America