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Origin of diffraction fringes in two-dimensional photoelectron momentum distributions for single ionization of atoms in few-cycle intense laser pulses |
| Zhang-Jin CHEN1,Xiaoxin Zhou2, 3 |
1. Shantou University
2. Northwest Normal University
3.
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Abstract We use the strong field approximation with time window function controlling the release time of electron to study the intracycle and intercycle interferences in few-cycle intense laser pulses impinging on He. The diffraction fringes, i.e., the vertical stripe-like structure, observed in the experimental two-dimensional photoelectron momentum distributions of Gopal et al. (2009 Phys. Rev. Lett. 103 053001) have been attributed to the interplay of the intra- and intercycle interferences. The pure numerical calculations by solving the time dependent Schrodinger equation are also performed and the results are compared the experimental measurements directly. It has been found that the position of the stripe-like structure can be used
to determine the duration of the laser pulses used in experiment.
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Received: 20 August 2013
Revised: 14 September 2013
Published: 31 October 2013
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Corresponding Authors:
Zhang-Jin CHEN
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Cite this article:
Zhang-Jin CHEN Xiaoxin Zhou Origin of diffraction fringes in two-dimensional photoelectron momentum distributions for single ionization of atoms in few-cycle intense laser pulses Chin. Phys. B 0
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