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Nonsequential double ionization driven by inhomogeneous laser fields
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DOI：10.1364/OE.457018.png)
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With a three-dimensional classical ensemble method, we theoretically investigated the correlated electron dynamics in nonsequential double ionization (NSDI) driven by the spatially inhomogeneous fields. Our results show that NSDI in the spatially inhomogeneous fields is more efficient than that in the spatially homogeneous fields at the low laser intensities, while at the high intensities NSDI is suppressed as compared to the homogeneous fields. More interestingly, our results show that the electron pairs from NSDI exhibit a much stronger angular correlation in the spatially inhomogeneous fields, especially at the higher laser intensities. The correlated electron momentum distribution shows that in the inhomogeneous fields the electron pairs favor to achieve the same final momentum, and the distributions dominantly are clustered in the more compact regions. It is shown that the electron's momentum is focused by the inhomogeneous fields. The underlying dynamics is revealed by back-tracing the classical trajectories. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Keyword:
ABOVE-THRESHOLD IONIZATION
RECOLLISION DYNAMICS
ATOMS
AR
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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引用论文
Electron angular correlation in nonsequential double ionization of molecules by counter-rotating two-color circularly polarized fields.png)
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