Investigation on the influence of atomic potentials on the above threshold ionization

doi:10.1088/1674-1056/23/5/053202

Abstract We systematically investigate the influence of atomic potentials on the above-threshold ionization (ATI) spectra in one-dimensional (1D) cases and compare them with the three-dimensional (3D) case by numerically solving the time-dependent Schrödinger equation. It is found that the direct ionization plateau and the rescattering plateau of the ATI spectrum in the 3D case can be well reproduced by the 1D ATI spectra calculated from the supersolid-core potential and the soft-core potential, respectively. By analyzing the factors that affect the yield of the ATI spectrum, we propose a modified-potential with which we can reproduce the overall 3D ATI spectrum. In addition, the influence of the incident laser intensities and frequencies on the ATI spectra calculated from the proposed modified potential is studied.

Keywords: above threshold ionization model potential angular distribution of photoelectron

Received: 05 September 2013
Revised: 08 November 2013
Accepted manuscript online:

PACS:	32.80.Rm	(Multiphoton ionization and excitation to highly excited states)
	42.50.Hz	(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2013CB922200), the National Natural Science Foundation of China (Grant Nos. 11274141, 11034003, 11304116, 11274001, and 11247024), and the Jilin Provincial Research Foundation for Basic Research, China (Grant No. 20140101168JC).

Corresponding Authors: Yang Yu-Jun
E-mail: yangyj@jlu.edu.cn

About author: 32.80.Rm; 42.50.Hz

Cite this article:

Tian Yuan-Ye (田原野), Li Su-Yu (李苏宇), Wei Shan-Shan (魏珊珊), Guo Fu-Ming (郭福明), Zeng Si-Liang (曾思良), Chen Ji-Gen (陈基根), Yang Yu-Jun (杨玉军) Investigation on the influence of atomic potentials on the above threshold ionization 2014 Chin. Phys. B 23 053202

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