Time-dependent unitary perturbation theory for intense laser driven molecular orientation

Abstract

We apply a time-dependent perturbation theory based on unitary transformations combined with averaging techniques, on molecular orientation dynamics by ultrashort pulses. We test the validity and the accuracy of this approach on LiCl described within a rigid-rotor model and find that it is more accurate than other approximations. Furthermore, it is shown that a noticeable orientation can be achieved for experimentally standard short laser pulses of zero time average. In this case, we determine the dynamically relevant parameters by using the perturbative propagator, that is derived from this scheme, and we investigate the temperature effects on the molecular orientation dynamics.

16 pages, 6 figures

References in corpus (5)

• Coherently Controlled Nanoscale Molecular Deposition
• Superconvergent Perturbation Method in Quantum Mechanics
• Pulse-driven quantum dynamics beyond the impulsive regime
• Unitary time-dependent superconvergent technique for pulse-driven quantum dynamics
• Optimized time-dependent perturbation theory for pulse-driven quantum dynamics in atomic or molecular systems

Cited by in corpus (14)

• Quantum control of molecular rotation
• Monotonically convergent optimal control theory of quantum systems under a nonlinear interaction with the control field
• Field-free molecular orientation by THz laser pulses at high temperature
• Control of mixed-state quantum systems by a train of short pulses
• Laser control in a bifurcating region
• Laser control for the optimal evolution of pure quantum states
• Optimal three-state field-free molecular orientation with terahertz pulses
• Orientational quantum revivals induced by a single-cycle terahertz pulse
• Mechanism of Molecular Orientation by Single-cycle Pulses
• Optimally Controlled Field-Free Orientation of the Kicked Molecule
• Control of molecular dynamics with zero-area fields: Application to molecular orientation and photofragmentation
• Time optimization and state-dependent constraints in the quantum optimal control of molecular orientation
• External constraints on optimal control strategies in molecular orientation and photofragmentation: Role of zero-area fields
• Quantum dynamics of a polar rotor acted upon by an electric rectangular pulse of variable duration