采用组合脉冲驱动生成单一的X射线阿秒脉冲  

The single X-ray attosecond pulse generation driven by the combined pulse

作　　者：陈基根[1] 杨玉军[2] 曾思良[3] 李琛[1] 朱颀人[2] 

机构地区：[1]台州学院物理系,临海317000 [2]吉林大学原子与分子物理研究所,长春130012 [3]北京应用物理与计算数学研究所,北京100088

出　　处：《原子与分子物理学报》2007年第2期369-373,共5页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(10474028);教育部博士点基金(20040183041);台州学院校立重点项目(06ZD08)

摘　　要：采用组合激光脉冲(800 nm/9.4 fs+24 nm/1 fs)辐照联合两原子体系产生高次谐波,获得了单一的X-射线阿秒脉冲.我们发现,当固定钛宝石激光的峰值强度并改变高频谐波脉冲的峰值强度Ih时,存在一个优选的Ih范围,在该范围内相应的阿秒脉冲最优化,即强度达到最强,对此,本文从受激复合的角度给出了合理解释.In this paper the single X-ray attosecond pulse generation is obtained from two-atom system exposed to the combined laser pulse （800 nm/9.4 fs ＋ 24 nm/1 fs）. Furthermore, when we change the peak intensity Ih of the high-frequency pulse and keep the intensity of the Ti： sapphire pulse unchanged, we find that there is a range of Ih where the intensity of the asec pulse is the most intense,and we present reasonable explanations from the stimulated property of the recombination.

关 键 词：高次谐波 组合激光脉冲 联合两原子体系 X-射线阿秒脉冲 

分 类 号：O562.1[理学—原子与分子物理]