Impact of Electric Fields on Highly Excited Rovibrational States of Polar Dimers

Abstract

We study the effect of a strong static homogeneous electric field on the highly excited rovibrational levels of the LiCs dimer in its electronic ground state. Our full rovibrational investigation of the system includes the interaction with the field due to the permanent electric dipole moment and the polarizability of the molecule. We explore the evolution of the states next to the dissociation threshold as the field strength is increased. The rotational and vibrational dynamics are influenced by the field; effects such as orientation, angular motion hybridization and squeezing of the vibrational motion are demonstrated and analyzed. The field also induces avoided crossings causing a strong mixing of the electrically dressed rovibrational states. Importantly, we show how some of these highly excited levels can be shifted to the continuum as the field strength is increased, and reversely how two atoms in the continuum can be brought into a bound state by lowering the electric field strength.

10 pages, 4 figures

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Cited by in corpus (9)

• Cold and Ultracold Molecules: Science, Technology, and Applications
• Manipulation of Molecules with Electromagnetic Fields
• Enhancing photoassociation rates by non-resonant light control of shape resonances
• Dispersion Interaction between Two Hydrogen Atoms in a Static Electric Field
• Asymptotic model for shape resonance control of diatomics by intense non-resonant light
• Asymptotic model for shape resonance control of diatomics by intense non-resonant light: Universality in the single-channel approximation
• Femtosecond wavepacket interferometry using the rotational dynamics of a trapped cold molecular ion
• Effects of a static electric field on two-color photoassociation between different atoms
• Giant enhancement of photodissociation of polar dimers in electric fields