Probing weakly-bound molecules with nonresonant light

Abstract

We show that weakly-bound molecules can be probed by "shaking" in a pulsed nonresonant laser field. The field introduces a centrifugal term which expels the highest vibrational level from the potential that binds it. Our numerical simulations applied to the Rb${}_2$ and KRb Feshbach molecules indicate that shaking by feasible laser pulses can be used to accurately recover the square of the vibrational wavefunction and, by inversion, also the long-range part of the molecular potential.

revised version, 4 pages, 4 figures

References in corpus (9)

• Production of cold molecules via magnetically tunable Feshbach resonances
• Evidence for Efimov quantum states in an ultracold gas of cesium atoms
• Inter-isotope determination of ultracold rubidium interactions from three high-precision experiments
• Calculation of accurate permanent dipole moments of the lowest ${}^{1,3}{\Sigma }^{+}$ states of heteronuclear alkali dimers using extended basis sets
• Evidence for Universal Four-Body States Tied to an Efimov Trimer
• Controlling a magnetic Feshbach resonance with laser light
• Calculations of static dipole polarizabilities of alkali dimers. Prospects for alignment of ultracold molecules
• The coupling of the X${}^1{\Sigma }^{+}$ and a${}^3{\Sigma }^{+}$ states of KRb
• Rotational and rotationless states of weakly-bound molecules

Cited by in corpus (7)

• Quantum control of molecular rotation
• Manipulation of Molecules with Electromagnetic Fields
• High resolution photoassociation spectroscopy of the ${}^6$Li${}_2$ $1^3{\Sigma }_g^{+}$ state
• Controlling magnetic Feshbach resonances in polar open-shell molecules with non-resonant light
• Swirling the weakly bound helium dimer from inside
• Fine-tuning molecular energy levels by nonresonant laser pulses
• Electric field dissociation of weakly bound molecular ions