Laser spectroscopy of the X 1Σ+ and B 1Π states of the LiRb molecule

Abstract

We have studied the X 1Σ+ and B 1Π states of 7Li85Rb using Laser Induced Fluorescence (LIF) spectroscopy and Fluorescence Excitation Spectroscopy (FES). We extract molecular constants for levels v" = 0-2 of the X 1Σ+ state and levels v' = 0-20 of the B 1Π state. For the B 1Π state, we have observed rotational perturbations in the e-parity component of the v' = 2 level, and determined the dissociation energy. We discuss implications of our measurements in finding efficient photoassociation pathways for production of ultra-cold ground state LiRb molecules, and their detection via state selective ionization.

20 pages, 6 figures, 2 tables, List of all experimentally observed transitions

References in corpus (5)

• Cold and Ultracold Molecules: Science, Technology, and Applications
• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules
• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Feshbach resonances in an ultracold ${}^7$Li and ${}^{87}$Rb mixture
• Feshbach resonances in ultracold 85Rb-87Rb and 6Li-87Rb mixtures

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• Formation of ultracold ${}^7$Li${}^{85}$Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy
• Formation of ultracold LiRb molecules by photoassociation near the Li (2s 2S1/2) + Rb (5p 2P1/2) asymptote
• Interspecies collision-induced losses in a dual species 7Li-85Rb magneto-optical trap
• Feshbach-optimized photoassociation of ultracold ${}^6$Li${}^{87}$Rb molecules with short pulses
• Two-photon photoassociation spectroscopy of an ultracold heteronuclear molecule
• Formation of deeply bound ultracold LiRb molecules via photoassociation near the Li 2S${}_{1/2}$ + Rb 5P${}_{3/2}$ asymptote
• The $C{}^1{\Sigma }^{+}$, $A{}^1{\Sigma }^{+}$, and $b{}^3{\Pi }_{0^{+}}$ states of LiRb
• Genetics-based deperturbation analysis for the spin-orbit coupled ${\mathrm{A}}^1{\Sigma }^{+}$ and ${\mathrm{b}}^3{\Pi }_{0^{+}}$ states of LiRb
• Extracting molecular potentials from insufficient spectroscopic information
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics