The $d{}^3\Pi$ state of LiRb

Abstract

We report our spectroscopic studies of the $d{}^3\Pi$ state of ultra-cold ${}^7$Li${}^{85}$Rb using resonantly-enhanced multi-photon ionization and depletion spectroscopy with bound-to-bound transitions originating from the metastable $a{}^3{\Sigma }^{+}$ state. We evaluate the potential of this state for use as the intermediate state in a STIRAP transfer scheme from triplet Feshbach LiRb molecules to the $X{}^1{\Sigma }^{+}$ ground state, and find that the lowest several vibrational levels possess the requisite overlap with initial and final states, as well as convenient energies. Using depletion measurements, we measured the well depth and spin-orbit splitting. We suggest possible pathways for short-range photoassociation using deeply-bound vibrational levels of this electronic state.

References in corpus (6)

• A High Phase-Space-Density Gas of Polar Molecules
• Cold Atoms and Molecules in Self-Assembled Dipolar Lattices
• Feshbach resonances in an ultracold ${}^7$Li and ${}^{87}$Rb mixture
• Production of rovibronic ground state RbCs molecules via two-photon cascade decay
• Formation of ultracold ${}^7$Li${}^{85}$Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy
• Formation of deeply bound ultracold LiRb molecules via photoassociation near the Li 2S${}_{1/2}$ + Rb 5P${}_{3/2}$ asymptote