Etienne Plésiat

Experienced Researcher – Humboldt-Universität zu Berlin
Nationality – French
Email – plesiat (at) physik.hu-berlin.de

Starting date: 01/04/2013
left project: 10/31/2014

etienne-plesiat

Research topic:
Molecules in intense ultrashort laser fields

Research abstract:
The goal of my work is to investigate theoretically the interaction between
molecules and intense laser fields. Such interaction is known to give rise to
many interesting phenomena (e.g. high-harmonic generation) that I study by
solving the time-dependent Schrödinger equation (TDSE) in the single-
determinant approximation in a basis of Kohn-Sham orbitals. More concretely,
the work consists in adapting and improving the existing codes and developing
new numerical tools in order to calculate the ionization yields, the high-
harmonic spectra, and the angle-resolved photoelectron spectra of molecules
belonging to different point groups (such as N2, NH3 or SF6, for example).

Biography:
Current – Postdoc, Modern Optics Group, Humboldt-Universität zu Berlin, Berlin
(Germany)
2012 – PhD Theoretical Chemistry and Computational Modelling,
Universidad Autónoma de Madrid, Madrid (Spain)
2010 – European Master Theoretical Chemistry and Computational Modelling,
Universidad Autónoma de Madrid, Madrid (Spain)
2007 – Master 2 Science Studies, Université Louis Pasteur, Strasbourg (France)
2006 – Master 2 Condensed Matter and Nanophysics, Université Louis Pasteur,
Strasbourg (France)
2005 – Master 1 Physics, Université de Franche-Comté, Besançon (France)

Research interests:
Strong field physics, atomic, molecular and optical physics, quantum optics, computational physics

Publications:
[1] E. Plésiat, P. Decleva, F. Martín, “Relationship between polarization-
averaged molecular-frame
photoelectron angular distributions and geometry”, Phys. Rev. A, 88(6):1157, Dec 2013

[2] E. Plésiat, P. Decleva, F. Martín, “Vibrationally resolved K-shell
photoionization cross sections of methane”, Cent. Eur. J. Phys., 11(9):1157, Oct 2013

[3] K. Ueda et al., “Intramolecular photoelectron diffraction in the gas
phase”, J. Chem. Phys., 139(12):124306, Sep 2013

[4] E. Kukk et al., “Effects of molecular potential and geometry on atomic
core-level photoemission over an extended energy range: The case study of the
CO molecule”, Phys. Rev. A, 88(3):033412, Sep 2013

[5] E. Plésiat, P. Decleva, F. Martín, “Vibrationally resolved photoelectron
angular distributions from randomly oriented and fixed-in-space N2 and CO
molecules”, J. Phys. B: At. Mol. Opt. Phys., 45(19):194008, Sep 2012

[6] E. Plésiat, P. Decleva, F. Martín, “Vibrational branching ratios in the
photoelectron spectra of N2 and CO: interference and diffraction effects”, Phys.
Chem. Chem. Phys., 14(31):10853, Jul 2012

[7] E. Plésiat et al., “Intramolecular electron diffraction in vibrationally
resolved K-shell photoionization of methane”, Phys. Rev. A, 85(2):023409, Feb 2012
[8] L. Argenti et al., “Double-slit experiment with a polyatomic molecule:
vibrationally resolved C 1s photoelectron spectra of acetylene”, New J. Phys.,
14:033012, Mar 2012

[9] S. E. Canton, E. Plésiat, J. D. Bozek, B. S. Rude, P. Decleva, F. Martín,
“Direct observation of Young’s double-slit interferences in vibrationally
resolved photoionization of diatomic molecules”, Proc. Natl. Acad. Sci.,
108(18):7302, Feb 2011

[10] Y. H. Jiang et al., “Investigating two-photon double ionization of D2 by
XUV- pump-XUV-probe experiments”, Phys. Rev. A, 81(5):051402, May 2010

[11] Y. H. Jiang et al., “Tracing direct and sequential two-photon double
ionization of D2 in femtosecond extreme-ultraviolet laser pulses”, Phys. Rev.
A, 81(2):021401, Feb 2010

[12] J. L. Sanz-Vicario, J. F. Pérez-Torres, F. Morales, E. Plésiat and F.
Martín, “Molecular frame photoelectron angular distributions for H2 ionization
by single and trains of attosecond XUV laser pulses”, Int. J. Quantum Chem.,
110:2462, Jan 2010

[13] J. L. Sanz-Vicario, J. F. Pérez-Torres, F. Morales, E. Plésiat and F.
Martín, “Probing H2 autoionizing states with femto- and attosecond laser
pulses”, J. Phys.: Conf. Ser., 194(1):012013, Nov 2009