The role of geometric phase in dissociation dynamics of the molecule

Abstract

This work explores the role of geometric phase (GP), which results from light induced conical intersection (LICI), in photodissociation process of the D þ 2 molecule through solving the time-dependent Schrödinger equation. The dissociation results between two cases including GP and excluding GP are compared. Different from the case including GP, the angular distribution of photofragments excluding GP is nonvanishing at θ ¼ π=2 which is the angle between the molecular axis and the polarization direction of laser field. Furthermore, in strong field, when the initial vibrational energy is higher than the energy of LICI point, not only the photofragments distributions present obvious quantum interference structures, but also the angular distributions of the photofragments of two cases have opposite oscillatory structure around θ ¼ π=2. This also shows that the GP effect and nonadiabatic effect of LICI are unified in photodissociation processes.

Manipulating Quantum Interference in Two-Color (ω+3ω) Strong Laser Field Photodissociation Dynamics of D2+

“…Although identifying strong field effects is essential for understanding the molecular dynamics of LIPESs, further research is needed to investigate their direct modulation. In particular, the impacts of the GP on dynamics are subtle, ,,− and their direct manipulation is more challenging …”

Directly revealing the geometric phase effect of dissociative D2+by two-color strong field photodissociation

“…Unlike indirect spectroscopic features, the observing associated GP signatures can provide an opportunity for the unambiguous detection of LICIs. 19,20,[35][36][37] In this paper, we propose a feasible two-color strong field photodissociation scheme to directly reveal the GP effects for D 2 + molecules introduced by LICIs. The probe scheme is based on the detection of the momentum distribution and kinetic energy release (KER) of D 2 + with random orientation, where the initial conditions of D 2 + can be experimentally prepared through strong field ionization of its parent neutral molecule.…”