Intercombination line photoassociation spectroscopy of ${}^{87}$Rb${}^{170}$Yb

Abstract

We report on the first observation of photoassociation near the ${}^2{S}_{\frac{1}{2}}+{}^3{P}_1$-asymptote in a mixture of ${}^{87}$Rb and ${}^{170}$Yb. In a search spanning binding energies between 0.1 GHz and 11 GHz, a single pair of interspecies PA resonances is detected around 3.1 GHz. These resonances are characterized by extracting PA rates, binding energies and Zeeman shift coefficients. Using one of these resonances, 2-photon-photoassociaton is performed, improving on previous measurements of the binding energies of the two least bound states in the electronic ground state and demonstrating intercombination line photoassociation as a powerful spectroscopic tool. We discuss implications for pathways towards RbYb molecules in the absolute ground state.

8 pages, 4 figures

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Cited by in corpus (2)

• DiPolMol-Py: A Python package for calculations for ${}^2\Sigma$ ground-state molecules
• Formation of deeply bound polar molecules combining pump-dump pulses with infrared radiation