Journal Article

PUBDB-2020-00145

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Symphony on strong field approximation

Amini, K. ; Biegert, J. ; Calegari, F.DESY* ; Chacón, A. ; Ciappina, M. F. ; Dauphin, A. ; Efimov, D. K. ; Figueira de Morisson Faria, C. ; Giergiel, K. ; Gniewek, P. ; Landsman, A. S. ; Lesiuk, M. ; Mandrysz, M. ; Maxwell, A. S. ; Moszyński, R. ; Ortmann, L. ; Antonio Pérez-Hernández, J. ; Picón, A. ; Pisanty, E. ; Prauzner-Bechcicki, J. ; Sacha, K. ; Suárez, N. ; Zaïr, A. ; Zakrzewski, J. ; Lewenstein, M.

2019
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1361-6633/ab2bb1  doi:10.3204/PUBDB-2020-00145

Abstract: This paper has been prepared by the Symphony collaboration (University of Warsaw, Uniwersytet Jagielloński, DESY/CNR and ICFO) on the occasion of the 25th anniversary of the 'simple man's models' which underlie most of the phenomena that occur when intense ultrashort laser pulses interact with matter. The phenomena in question include high-harmonic generation (HHG), above-threshold ionization (ATI), and non-sequential multielectron ionization (NSMI). 'Simple man's models' provide both an intuitive basis for understanding the numerical solutions of the time-dependent Schrödinger equation and the motivation for the powerful analytic approximations generally known as the strong field approximation (SFA). In this paper we first review the SFA in the form developed by us in the last 25 years. In this approach the SFA is a method to solve the TDSE, in which the non-perturbative interactions are described by including continuum–continuum interactions in a systematic perturbation-like theory. In this review we focus on recent applications of the SFA to HHG, ATI and NSMI from multi-electron atoms and from multi-atom molecules. The main novel part of the presented theory concerns generalizations of the SFA to: (i) time-dependent treatment of two-electron atoms, allowing for studies of an interplay between electron impact ionization and resonant excitation with subsequent ionization; (ii) time-dependent treatment in the single active electron approximation of 'large' molecules and targets which are themselves undergoing dynamics during the HHG or ATI processes. In particular, we formulate the general expressions for the case of arbitrary molecules, combining input from quantum chemistry and quantum dynamics. We formulate also theory of time-dependent separable molecular potentials to model analytically the dynamics of realistic electronic wave packets for molecules in strong laser fields. We dedicate this work to the memory of Bertrand Carré, who passed away in March 2018 at the age of 60.

Note: © IOP Publishing Ltd

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Contributing Institute(s):

1. Attosecond Science and Technology (FS-ATTO)

Research Program(s):

1. 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621) (POF3-621)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2019

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 10 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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