Laser-Induced nonadiabatic processes in molecular systems: Theory and applications

• Applicant: Professor Dr. Lorenz S. Cederbaum
• Subject Area: Theoretical Chemistry: Electronic Structure, Dynamics, Simulation ; Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: from 2011 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 206675520

• Final Report Year: 2018

Final Report Abstract

The light-induced nonadiabaticity couples in a controllable way different electronic states of the molecule and depending on the field intensity this coupling can be strong and extremely large in the vicinity of the LICIs. The nonadiabatic couplings become singular at the conical intersections (CIs). In contrast to the situation provided by natural CIs of field-free molecules, the LICI is controllable in the sense that the laser frequency determines its position in nuclear coordinate space and energy and the laser intensity the strength of the couplings. During our theoretical studies we have undoubtedly demonstrated that the LICIs can have a very strong impact on the spectroscopic and dynamical properties of diatomic molecules.

Publications

• Competition between Light-Induced and Intrinsic Nonadiabatic Phenomena in Diatomics. J. Phys. Chem. Lett., 8, 1624 (2017)
  A. Csehi, G. J. Halász, L. S. Cederbaum and Á. Vibók
  
• Communication: Substantial impact of the orientation of transition dipole moments on the dynamics of diatomics in laser fields. J. Chem. Phys. 149, 181101 (2018)
  P. Badankó, G. J. Halász, L. S. Cederbaum, Á. Vibók and A. Csehi
  
• Conical Intersections Induced by Quantum Light: Field-Dressed Spectra from the Weak to the Ultrastrong Coupling Regimes. J. Phys. Chem. Lett., 9, 6215 (2018)
  T. Szidarovszky, G. J. Halász, A. G. Császár, L. S. Cederbaum and Á. Vibók
  
• Direct Signatures of Light-Induced Conical Intersections on the Field- Dressed Spectrum of Na2. J. Phys. Chem. Lett., 9, 2239 (2018)
  T. Szidarovszky, G. J. Halász, A. G. Császár, L. S. Cederbaum and Á. Vibók