Rotational spectrum of asymmetric top molecules in combined static and laser fields

Abstract

We examine the impact of the combination of a static electric field and a non resonant linearly polarized laser field on an asymmetric top molecule. Within the rigid rotor approximation, we analyze the symmetries of the Hamiltonian for all possible field configurations. For each irreducible representation, the Schrödinger equation is solved by a basis set expansion in terms of a linear combination of Wigner functions respecting the corresponding symmetries, which allows us to distinguish avoided crossings from genuine ones. Using the fluorobenzene and pyridazine molecules as prototypes, the rotational spectra and properties are analyzed for experimentally accessible static field strengths and laser intensities. Results for energy shifts, orientation, alignment and hybridization of the angular motion are presented as the field parameters are varied. We demonstrate that a proper selection of the fields gives rise to a constrained rotational motion in the three Euler angles, the wave function being oriented along the electrostatic field direction, and aligned in the other two angles.

17 pages, 11 figures

References in corpus (7)

• Photoelectron angular distributions from strong-field ionization of oriented molecules
• Laser-induced alignment and orientation of quantum-state-selected large molecules
• Quantum-state selection, alignment, and orientation of large molecules using static electric and laser fields
• Strong impact of light induced conical intersections on the spectrum of diatomic molecules
• Ionization of 1D and 3D oriented asymmetric top molecules by intense circularly polarized femtosecond laser pulses
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• Theoretical description of adiabatic laser alignment and mixed-field orientation: the need for a non-adiabatic model

Cited by in corpus (10)

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• Mixed-field orientation of molecules without rotational symmetry
• Switched Wave Packets with Spectrally Truncated Chirped Pulses
• Time-dependent analysis of the mixed-field orientation of molecules without rotational symmetry
• Rotational dynamics of an asymmetric top molecule in parallel electric and non-resonant laser fields
• Theoretical description of mixed-field orientation of asymmetric top molecules: a time-dependent study
• Orientation and Alignment Dynamics of Polar Molecule Driven by Shaped Laser Pulses
• Theoretical study of asymmetric superrotors: alignment and orientation
• Photoionization of aligned excited states in neon by attosecond laser pulses
• Laser-induced molecular alignment in the presence of chaotic rotational dynamics