Generation of an intense single harmonic emission event and attosecond pulse from hydrogen molecular ion and its isotopic molecular ions with the assistance of half-cycle unipolar pulse

被引：0

作者：

Jing, Xiao-Dan ^{[1
]}

Feng, Li-Qiang ^{[1
]}

机构：

[1] Liaoning Univ Technol, Modern Phys Lab, Jinzhou 121001, Peoples R China

来源：

SPECTROSCOPY LETTERS | 2020年 / 53卷 / 08期

关键词：

Attosecond pulse; charge resonance enhanced ionization; high-order harmonic generation; hydrogen molecular ion and its isotopic molecular ions; LASER FIELD; H-2(+); POLARIZATION;

D O I：

10.1080/00387010.2020.1796711

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Through controlling the charge resonance enhanced ionization process of the isotope molecules of hydrogen molecular ion, deuterium molecular ion and tritium molecular ion, the intense single harmonic emission event has been produced, which is beneficial to generate the single attosecond pulse. Moreover, the optimal laser parameter combinations for producing the intense harmonic spectra and attosecond pulses have been shown from 4 x 10(14)W/cm(2)to 7 x 10(14)W/cm(2). Further, by properly adding a half-cycle unipolar pulse, the selected single harmonic emission event can be further extended, which can support the shorter attosecond pulse with higher photon energy. Finally, by superposing these harmonics, a number of intense attosecond pulses shorter than 40 as can be obtained.

引用

页码：559 / 571

页数：13

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