Towards controlling the dissociation probability by light-induced conical intersections

Abstract

Light-induced conical intersections (LICIs) can be formed both by standing or by running laser waves. The position of a LICI is determined by the laser frequency while the laser intensity controls the strength of the nonadiabatic coupling. Recently, it was shown within the LICI framework that linearly chirped laser pulses have an impact on the dissociation dynamics of the $D_2^{+}$ molecule (J. Chem. Phys. 143, 014305, (2015); ibid 144, 074309, (2016)). In this work we exploit this finding and perform calculations using chirped laser pulses in which the time dependence of the laser frequency is designed so as to force the LICI to move together with the field-free vibrational wave packet as much as possible. Since nonadiabaticity is strongest in the vicinity of the conical intersection, this is the first step towards controlling the dissociation process via the LICI. Our showcase example is again the $D_2^{+}$ molecular ion. To demonstrate the impact of the LICIs on the dynamical properties of diatomics, the total dissociation probabilities and the population of the different vibrational levels after the dissociation process are studied and discussed.

21 pages, 4 figures, accepted in Faraday Discussions

References in corpus (10)

• Full dimensional (15D) quantum-dynamical simulation of the protonated water-dimer II: infrared spectrum and vibrational dynamics
• Control of 1,3-Cyclohexadiene Photoisomerization Using Light-Induced Conical Intersections
• Strong impact of light induced conical intersections on the spectrum of diatomic molecules
• Coherent Control of Bond Making
• Generating Molecular Rovibrational Coherence by Two-Photon Femtosecond Photoassociation of Thermally Hot Atoms
• Nuclear wave packet quantum interference in the intense laser dissociation of the ${\mathrm{D}}_2^{+}$ molecule
• Quantum Control of Photodissociation via Manipulation of Bond Softening
• Coherent Mechanism of Robust Population Inversion
• Tracking the photodissociation probability of D${}_2^{+}$ induced by linearly chirped laser pulses
• Compression and collisions of chirped pulses in a dense two-level medium

Cited by in corpus (5)

• Identifying Strong-Field Effects in Indirect Photofragmentation Reactions
• Control of photodissociation with dynamic Stark effect induced by Thz pulses
• Probing Light-Induced Conical Intersections by Monitoring Multidimensional Polaritonic Surfaces
• Classical and quantum light-induced non-adiabaticity in molecular systems
• Geometric phase of light-induced conical intersections: Adiabatic time-dependent approach