原子与分子物理学报2013，Vol.30Issue(3)：421-426,6.DOI:10.3969/j.issn.1000-0364.2013.03.013
中红外组合激光场产生低于50阿秒的单个脉冲
Isolated sub-50 as pulse generation in the combined mid-infrared laser field
摘要
Abstract
We theoretically study high-order harmonic and isolated attosecond pulse generation from a model helion ion in the combination of the mid-infrared (mid-IR) laser and an extreme ultraviolet (xuv) pulse.It is shown that,for the low laser intensity,the harmonic cutoff is at about 657 th order,and the supercontinuum with a 287 eV bandwidth is formed.For the high laser intensity,the spectral cutoff is enlarged to 1795 th order,and the supercontinuum is broadened to 834 eV.In the two cases,both the long quantum path selection and the enhancement of the supercontinuum are achieved.Especially for the relatively high laser intensity,pure isolated sub-50 as pulses can be directly obtained by superposing an arbitrary 87 eV harmonics in the supercontinuum from 450 th to 1590 th order.关键词
高次谐波辐射/孤立阿秒脉冲/组合场Key words
high-order harmonic generation/ isolated attosecond pulse/ combined field分类
数理科学引用本文复制引用
白婷婷,张刚台,张美光..中红外组合激光场产生低于50阿秒的单个脉冲[J].原子与分子物理学报,2013,30(3):421-426,6.基金项目
宝鸡文理学院重点科研项目(ZK11135,ZK10122,ZK11061,ZK11060) （ZK11135,ZK10122,ZK11061,ZK11060）
