Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold*

Ma, Xiaomeng; Tong, Aihong; Wang, Zhuo; Zhai, Chunyang

doi:10.1088/1674-1056/ac2d1e

Cited by 2 publications

(1 citation statement)

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“…The strong-field NSDI provides a simple and clear model for studying the effect of electron correlation [8,9]. The study of the strong-field NSDI enables us to deeply understand electron correlation and gain insight into the essence of many physical phenomena [10][11][12][13][14][15]. Therefore, the strongfield NSDI has become one of the research hot spots in strong-field physics.…”

Section: Introductionmentioning

confidence: 99%

Controlling multiple returnings in non-sequential double ionization with orthogonal two-color laser pulses

Zhang

Tong

2023

Front. Phys.

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With the three-dimensional semi-classical ensemble model, we studied the non-sequential double ionization by orthogonal two-color laser pulses. Our calculations show that the proportion of events experiencing multiple returnings, the sum of the final energies of two electrons, and the ion momentum distribution depend on the relative phase of the two-color fields, exhibiting oscillatory behavior with a period of π. Back analysis of these trajectories reveals that we can control the recollision energy of the electron by changing the relative phase of the two-color laser pulse. As a consequence, the trajectories of multiple-returning ions change with the relative phase, resulting in relative-phase-dependent ion momentum distributions. The result shows that the momentum distribution of the ions in the trajectories of multiple returnings is clearly wider than that for the case of single returning. For the multiple-returning events, the binary recollision leads to a smaller scattering angle of the first electron.

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