文献类型：期刊文献

英文题名：Effect of nuclear motion on spectral broadening of high-order harmonic generation

作者：Yuan, Xiaolong[1,2];Wei, Pengfei[3];Liu, Candong[1];Ge, Xiaochun[1];Zheng, Yinghui[1];Zeng, Zhinan[1];Li, Ruxin[1]

机构：[1]Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

年份：2016

卷号：24

期号：8

起止页码：8194

外文期刊名：OPTICS EXPRESS

收录：SCI-EXPANDED(收录号：WOS:000374390300032)、、EI(收录号：20161802319615)、Scopus(收录号：2-s2.0-84964474594)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Nos. 11127901, 61221064, 11134010, 11227902, 11222439, 11404356, 61108012, and 11474223), the Zhejiang Provincial Natural Science Foundation of China (No. LY14F050008), Science and Technology Commission of Shanghai Municipality Yangfan Project (No. 14YF1406000), and Youth Innovation Promotion Association, CAS.

语种：英文

外文关键词：Harmonic generation - Ionization of gases - Ionization potential - Molecules

外文摘要：High-order harmonic generation (HHG) in molecular targets is experimentally investigated in order to reveal the role of the nuclear motion played in the harmonic generation process. An obvious broadening in the harmonic spectrum from the H-2 molecule is observed in comparison with the harmonic spectrum generated from other molecules with relatively heavy nuclei. We also find that the harmonic yield from the H2 molecule is much weaker than the yield from those gas targets with the similar ionization potentials, such as Ar atom and N-2 molecule. The yield suppression and the spectrum broadening of HHG can be attributed to the vibrational motion of nuclear induced by the driving laser pulse. Moreover, the one-dimensional (1D) time-dependent Schrodinger equation (TDSE) with the non-Born-Oppenheimer (NBO) treatment is numerically solved to provide a theoretical support to our explanation. (C) 2016 Optical Society of America