Volume 4, Issue 3
Isolated sub-50 attosecond pulse generation in the combined mid-infrared laser field

Gang-Tai Zhang, Ting-Ting Bai & Mei-Guang Zhang

J. At. Mol. Sci., 4 (2013), pp. 251-260.

Published online: 2013-04

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  • 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 657th order, and the supercontinuum with a 287-eV bandwidth is formed. For the high laser intensity, the spectral cutoff is enlarged to 1795th 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 450th to 1590th order.
  • Keywords

high-order harmonic generation supercontinuum isolated attosecond pulse combined field

  • AMS Subject Headings

  • Copyright

COPYRIGHT: © Global Science Press

  • Email address

gtzhang79@163.com (Gang-Tai Zhang)

btt1120@163.com (Ting-Ting Bai)

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@Article{JAMS-4-251, author = {Zhang , Gang-Tai and Bai , Ting-Ting and Zhang , Mei-Guang}, title = {Isolated sub-50 attosecond pulse generation in the combined mid-infrared laser field}, journal = {Journal of Atomic and Molecular Sciences}, year = {2013}, volume = {4}, number = {3}, pages = {251--260}, 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 657th order, and the supercontinuum with a 287-eV bandwidth is formed. For the high laser intensity, the spectral cutoff is enlarged to 1795th 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 450th to 1590th order.}, issn = {2079-7346}, doi = {https://doi.org/10.4208/jams.070112.073012a}, url = {http://global-sci.org/intro/article_detail/jams/8257.html} }
TY - JOUR T1 - Isolated sub-50 attosecond pulse generation in the combined mid-infrared laser field AU - Zhang , Gang-Tai AU - Bai , Ting-Ting AU - Zhang , Mei-Guang JO - Journal of Atomic and Molecular Sciences VL - 3 SP - 251 EP - 260 PY - 2013 DA - 2013/04 SN - 4 DO - http://doi.org/10.4208/jams.070112.073012a UR - https://global-sci.org/intro/article_detail/jams/8257.html KW - high-order harmonic generation KW - supercontinuum KW - isolated attosecond pulse KW - combined field AB - 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 657th order, and the supercontinuum with a 287-eV bandwidth is formed. For the high laser intensity, the spectral cutoff is enlarged to 1795th 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 450th to 1590th order.
Gang-Tai Zhang , Ting-Ting Bai & Mei-Guang Zhang . (2020). Isolated sub-50 attosecond pulse generation in the combined mid-infrared laser field. Journal of Atomic and Molecular Sciences. 4 (3). 251-260. doi:10.4208/jams.070112.073012a
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