Multiphoton Ionization of Magnesium in a Ti-Sapphire laser field
Abstract
In this paper we report the theoretical results obtained for partial ionization yields and the above-threshold ionization (ATI) spectra of Magnesium in a Ti:sapphire laser field (804 nm) in the range of short pulse duration (20-120 fs). Ionization yield, with linearly polarized light for a 120 fs laser pulse, is obtained as a function of the peak intensity motivated by recent experimental data \cite{gillen:2001}. For this, we have solved the time-dependent Schr\"{o}dinger equation nonperturbatively on a basis of discretized states obtained with two different methods; one with the two-electron wavefunction relaxed at the boundaries, giving a quadratic discretized basis and the other with the two-electron wavefunction expanded in terms of Mg-orbitals plus one free electron allowing the handling of multiple continua (open channels). Results, obtained with the two methods, are compared and advantages and disadvantages of the open-channel method are discussed.
Keywords
Cite
@article{arxiv.1303.6117,
title = {Multiphoton Ionization of Magnesium in a Ti-Sapphire laser field},
author = {L. A. A. Nikolopoulos and Gabriela Buica-Zloh and P. Lambropoulos},
journal= {arXiv preprint arXiv:1303.6117},
year = {2013}
}