Volume 135, Number 1, July 2021
|Number of page(s)||7|
|Section||Atomic, Molecular and Optical Physics|
|Published online||17 September 2021|
Exploration of interference structure of a hydrogen atom with different wavelengths in a linearly polarized laser field
1 Institute of Atomic and Molecular Physics, Jilin University - Changchun 130012, PRC
2 Institute of Applied Physics and Computational Mathematics - P. O. Box 8009, Beijing 100088, PRC
Received: 1 March 2021
Accepted: 7 May 2021
We investigate the ionization process of an atom with different wavelengths in a linearly polarized laser field. With the change of wavelength, the interference structure in photoelectron momentum distributions (PMDs) changes obviously. The temporal double-slit fringes can be clearly observed in the relatively high-energy region below the energy of 2Up for the laser wavelength , but we only observe the temporal double-slit fringes in the relatively low-energy region below the energy of 2Up for the laser wavelength . By analyzing the number of relative contribution of directly ionized electrons, we find a sensitive dependence of the direct electron on the laser wavelength. In addition, the temporal double-slit fringes can be also observed in the photoelectron momentum distributions in the deep tunneling regime ().
© 2021 EPLA
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