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7 results on '"Moszynski, Robert"'

1. Imaging an isolated water molecule with an attosecond electron wave packet

Author

Universitat Politècnica de Catalunya. Doctorat en Fotònica, Liu, Xinyao, Amini, Kasra, Steinle, Tobias, Sánchez, Aurelien, Moniruzzaman, Shaikh, Belsa Carné, Blanca Maria, Steinmetzer, Johannes, Anh-Thu, Le, Moshammer, Robert, Pfeifer, Thomas, Ullrich, Joachim, Moszynski, Robert, Lin, Chii-Dong, Gräfe, Stefanie, Biegert, Jens, Universitat Politècnica de Catalunya. Doctorat en Fotònica, Liu, Xinyao, Amini, Kasra, Steinle, Tobias, Sánchez, Aurelien, Moniruzzaman, Shaikh, Belsa Carné, Blanca Maria, Steinmetzer, Johannes, Anh-Thu, Le, Moshammer, Robert, Pfeifer, Thomas, Ullrich, Joachim, Moszynski, Robert, Lin, Chii-Dong, Gräfe, Stefanie, and Biegert, Jens

Abstract

We use laser-induced electron diffraction (LIED) to self-image the molecular structure of an isolated water molecular ion using its own retuning attosecond electron wave packet (EWP). Using LIED’s sub-femtosecond and picometre spatio-temporal resolution imaging capabilities, we observe the symmetric stretching of the O-H and H-H internuclear distances with increasing laser field strength., Postprint (published version)

Published
2020

2. Ultrafast imaging of the Renner-Teller effect in a field-dressed molecule

Author

Universitat Politècnica de Catalunya. Doctorat en Fotònica, Amini, Kasra, Sclafani, Michele, Steinle, Tobias, Moniruzzaman, Shaikh, Sánchez, Aurelien, Liu, Xinyao, Anh-Thu, Le, Steinmetzer, Johannes, Pfeiffer, Thomas, Moshammer, Robert, Ullrich, Joachim, Lewenstein, Maciej, Moszynski, Robert, García de Abajo, Francisco Javier, Lin, Chii-Dong, Gräfe, Stefanie, Biegert, Jens, Universitat Politècnica de Catalunya. Doctorat en Fotònica, Amini, Kasra, Sclafani, Michele, Steinle, Tobias, Moniruzzaman, Shaikh, Sánchez, Aurelien, Liu, Xinyao, Anh-Thu, Le, Steinmetzer, Johannes, Pfeiffer, Thomas, Moshammer, Robert, Ullrich, Joachim, Lewenstein, Maciej, Moszynski, Robert, García de Abajo, Francisco Javier, Lin, Chii-Dong, Gräfe, Stefanie, and Biegert, Jens

Abstract

We present experimental results of linear-to-bent transition of field-dressed molecules, mediated by Renner-Teller effect. Using the state-of-the-art laser-induced electron diffraction (LIED) technique, we image a bent and symmetrically stretched carbon disulfide (CS2) molecule populating an excited electronic state under the influence of strong laser field. Our findings are well-supported by ab initio quantum mechanical calculations., Peer Reviewed, Postprint (published version)

Published
2020

3. Symphony on strong field approximation

Author

Amini, Kasra, Biegert, Jens, Calegari, Francesca, Chacón, Alexis, Ciappina, Marcelo F., Dauphin, Alexandre, Efimov, Dmitry K., Figueira de Morisson Faria, Carla, Giergiel, Krzysztof, Gniewek, Piotr, Landsman, Alexandra S., Lesiuk, Michał, Mandrysz, Michał, Maxwell, Andrew S., Moszynski, Robert, Ortmann, Lisa, Pérez-Hernández, Jose Antonio, Picón, Antonio, Pisanty, Emilio, Prauzner-Bechcicki, Jakub, Sacha, Krzysztof, Suárez, Noslen, Zaïr, Amelle, Zakrzewski, Jakub, Lewenstein, Maciej, Amini, Kasra, Biegert, Jens, Calegari, Francesca, Chacón, Alexis, Ciappina, Marcelo F., Dauphin, Alexandre, Efimov, Dmitry K., Figueira de Morisson Faria, Carla, Giergiel, Krzysztof, Gniewek, Piotr, Landsman, Alexandra S., Lesiuk, Michał, Mandrysz, Michał, Maxwell, Andrew S., Moszynski, Robert, Ortmann, Lisa, Pérez-Hernández, Jose Antonio, Picón, Antonio, Pisanty, Emilio, Prauzner-Bechcicki, Jakub, Sacha, Krzysztof, Suárez, Noslen, Zaïr, Amelle, Zakrzewski, Jakub, and Lewenstein, Maciej

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., Peer Reviewed, Postprint (author's final draft)

Published
2019

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