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引用本文格式: Liu Yan-Wen,Liu Hang,Feng Li-Qiang. Effect of chirp introducing time on H2+ harmonic spectrum [J]. J. At. Mol. Phys., 2021, 38: 014001 (in Chinese) [刘妍雯,刘航,冯立强. 啁啾引入时刻对H2+谐波光谱的影响 [J]. 原子与分子物理学报, 2021, 38: 014001]
 
啁啾引入时刻对H2+谐波光谱的影响
Effect of chirp introducing time on H2+ harmonic spectrum
摘要点击 83  全文点击 13  投稿时间:2019-12-30  修订日期:2020-01-08
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DOI编号   
中文关键词   高次谐波  啁啾激光场  啁啾延迟调控  双原子分子  阿秒脉冲
英文关键词   High-order harmonic generation  Chirped laser pulse  Chirp-delay modulation  Diatomic molecule  Attosecond pulse
基金项目   
作者单位E-mail
刘妍雯 辽宁工业大学 lqfeng1101@126.com 
刘航 辽宁工业大学 lqfeng1101@126.com 
冯立强 辽宁工业大学 lqfeng@lnut.edu.cn 
中文摘要
    理论研究了长脉宽激光驱动下啁啾引入时刻对H2+高次谐波光谱的影响。结果表明,在长脉宽激光驱动下,H2+在激光前半程区域具有较高的谐波辐射效率。因此,在激光前半程引入啁啾调控可获得高强度光谱连续区。此外,在啁啾调控区域引入单极激光场可以进一步获得高能谐波连续区。最后,叠加谐波连续区的谐波,可获得39 as的孤立脉冲。
英文摘要
    The effect of chirp introducing time on high order harmonic spectrum of H2+ driven by loner pulse duration pulse has been theoretically studied. It is shown that, driven by the longer pulse duration, H2+ has a higher harmonic emission efficiency in the first half of laser field. Thus, by introducing chirp modulation in the first half of laser field, the high-intensity spectral continuum can be produced. Furthermore, with the introduction of the unipolar pulse into the chirp region, the high-energy spectral continuum can be obtained. Finally, an isolated pulse of 39 as can be obtained by superimposing the harmonics on the spectral continuum.

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