SFB 450 III: Ab-initio theory for the analysis and control of excitation, fragmentation and charge transfer in ultrashort laser pulses (TP C 6)
This project aims for a better theoretical understanding of the control of physical and chemical reactions by means of lasers. Alkali dimers should serve as model systems. Very accurate ab initio calculations describing the response of alkali dimers to laser pulses should allow for a deeper understanding of different control schemes, including shaped pulses or pump-dump schemes. A special focus will be on strong-field control where non-linear processes are important. This includes besides non-resonant multiphoton absorption also the modification of potential surfaces due to the electric-field component of the intense laser radiation.
Financer
Duration of project
Start date: 07/2004
End date: 06/2010
Publications
[1] E. Goll, G. Wunner, A. Saenz, Formation of Ground-State Vibrational Wavepackets in Intense Ultrashort Laser Pulses, Phys. Rev. Lett. 97, 103003 (2006) / [2] I. Dumitriu, Y.V. Vanne, M. Awasthi, A. Saenz, Photoionization of the alkali dimer cations Li2+, Na2+, LiNa+, J. Phys. B 40, 1821 (2007) / [3] S. Grishkevich, A. Saenz, Influence of a tight isotropic harmonic trap on photoassociation in ultracold homonuclear alkali gases, Phys. Rev. A 76, 022704 (2007) / [4] A. Saenz, Stong-field control in small molecules in "Analysis and Control of Ultrafast Photoinduced Reactions", O. Kühn, L. Wöste (eds.) (Springer Lecture Notes in Physics, 2007) / [5] P.-I. Schneider, S. Grishkevich, A. Saenz, Ab-initio determination of Bose-Hubbard parameters for two ultracold atoms in an optical lattice using a three-well potential, Phys. Rev. A 80, 013404 (2009) / [6] I. Dumitriu, A. Saenz, Photodissociation of the HeH+ molecular ion, J. Phys. B 42, 165101 (2009) / [7] S. Grishkevich, A. Saenz, Theoretical description of two ultracold atoms in a single site of a 3D optical lattice using realistic interatomic interaction potentials, Phys. Rev. A 80, 013403 (2009) / [8] S. Petretti, Y.V. Vanne, A. Saenz, A. Castro, P. Decleva, Alignment-dependent ionization of N2, O2, and CO2 in intense laser fields, Phys. Rev. Lett. 104, 223001 (2010) / [9] S. Grishkevich, P.-I. Schneider, Y.V. Vanne, A. Saenz, Mimicking multi-channel scattering with single-channel approaches, Phys. Rev. A 81, 022719 (2010) / [10] P.-I. Schneider, A. Saenz, Two-channel model of photoassociation in the vicinity of a Feshbach resonance, Phys. Rev. A (Rapid Communication) 80, 061401 (2009) / [11] M. Awasthi, A. Saenz, Breakdown of the single-active-electron approximation for one-photon ionization of the B 1Sigma_u state of H2 exposed to intense laser fields, Phys. Rev. A 81, 063406 (2010) / [12] P.-I. Schneider, Y.V. Vanne, A. Saenz, Feshbach resonances of harmonically trapped atoms, arXiv:1005.5306 (2010)
