Theoretical description of the two-color photoelectron spectra process of hydrogen: comparison between TDSE calculation and Kroll and Watson approach

Authors

SOUHAILA CHADDOU
SOUMIA CHQONDI
ABDELMALEK TAOUTIOUI
ABDELKADER MAKHOUTE

DOI

10.3906/fiz-1807-27

Abstract

We present a theoretical study of the main characteristics of two-color photoionization of hydrogen atoms by short strong laser pulses. Our numerical approach is performed by numerically solving the time-dependent Schrödinger equation for a hydrogen atom interacting with Ti:sapphire laser radiation combined with its 15th harmonic. The energy spectra obtained by the direct numerical solution of the Schrödinger equation are compared with those given by the Kroll and Watson perturbative approach. This comparison allows us to check the reliability of the latter approximation.

Keywords

Time-dependent Schrödinger equation, above-threshold ionization, two-color photoionization, Kroll and Watson approach, infrared radiation, harmonic radiation

First Page

138

Last Page

146

Recommended Citation

CHADDOU, SOUHAILA; CHQONDI, SOUMIA; TAOUTIOUI, ABDELMALEK; and MAKHOUTE, ABDELKADER (2019) "Theoretical description of the two-color photoelectron spectra process of hydrogen: comparison between TDSE calculation and Kroll and Watson approach," Turkish Journal of Physics: Vol. 43: No. 2, Article 2. https://doi.org/10.3906/fiz-1807-27
Available at: https://journals.tubitak.gov.tr/physics/vol43/iss2/2