Near-threshold photoassociation of Rb2 at very high resolution,

We explore 2-color photoassociative ionization in cold Rb vapor and present experimental evidence that the molecular ions are produced from the stepwise excitation of a ladder of molecular states. We also explore a new process, dubbed photoassociative-dissociative ionization, by which atomic ions are created by excitation through a ladder of molecular states, finally autoionizing to a dissociative potential curve of Rb2+. We submit that these experiments could be the starting point for the same sort of high resolution spectroscopy that has already been done for lower electronic states of cold Rb2 at large internuclear separation.We explore 2-color photoassociative ionization in cold Rb vapor and present experimental evidence that the molecular ions are produced from the stepwise excitation of a ladder of molecular states. We also explore a new process, dubbed photoassociative-dissociative ionization, by which atomic ions are created by excitation through a ladder of molecular states, finally autoionizing to a dissociative potential curve of Rb2+. We submit that these experiments could be the starting point for the same sort of high resolution spectroscopy that has already been done for lower electronic states of cold Rb2 at large internuclear separation.

Physical Review LettersJul 25, 200713 citations

Short Range Photoassociation of Rb 2 in a Broadband Dipole Trap

Carlos Renato Menegatti, Jonathan Tallant, Bruno Marangoni +1 more

Bulletin of the American Physical SocietyMay 1, 20130 citations

Study of Rb2 Long-Range States by High-Resolution Photoassociation Spectroscopy

Robert A. Cline, Joseph D. Miller, Daniel J. Heinzen

We study the states of ${\mathrm{Rb}}_{2}$ that lie within 35 ${\mathrm{cm}}^{\ensuremath{-}1}$ of the ${5}^{2}{S}_{\frac{1}{2}}+{5}^{2}{P}_{\frac{3}{2}}$ dissociation limit with photoassociation spectroscopy of laser-cooled Rb atoms. We observe the rotationally resolved bound levels of the novel ${0}_{g}^{\ensuremath{-}}$ "pure long-range" state, which has an inner turning point beyond 25 bohrs. We also identify levels belonging to ${1}_{g}$ and ${0}_{\ensuremath{\mu}}^{+}$ states and find that the ${0}_{\ensuremath{\mu}}^{+}$ levels are broadened by predissociation. With our new method, excited molecular states with a binding energy from less than 0.3 to more than 1000 ${\mathrm{cm}}^{\ensuremath{-}1}$ can be studied with a resolution better than 0.002 ${\mathrm{cm}}^{\ensuremath{-}1}$.We study the states of ${\mathrm{Rb}}_{2}$ that lie within 35 ${\mathrm{cm}}^{\ensuremath{-}1}$ of the ${5}^{2}{S}_{\frac{1}{2}}+{5}^{2}{P}_{\frac{3}{2}}$ dissociation limit with photoassociation spectroscopy of laser-cooled Rb atoms. We observe the rotationally resolved bound levels of the novel ${0}_{g}^{\ensuremath{-}}$ "pure long-range" state, which has an inner turning point beyond 25 bohrs. We also identify levels belonging to ${1}_{g}$ and ${0}_{\ensuremath{\mu}}^{+}$ states and find that the ${0}_{\ensuremath{\mu}}^{+}$ levels are broadened by predissociation. With our new method, excited molecular states with a binding energy from less than 0.3 to more than 1000 ${\mathrm{cm}}^{\ensuremath{-}1}$ can be studied with a resolution better than 0.002 ${\mathrm{cm}}^{\ensuremath{-}1}$.

Physical Review LettersAug 1, 1994140 citations

Photoassociation of Rb atoms in an optical dipole trap

Carlos Renato Menegatti, Bruno Marangoni, Nadia Bouloufa-Maafa +2 more

Bulletin of the American Physical SocietyJun 6, 20120 citations

We study the states of

{\mathrm{Rb}}_{2}

that lie within 35 ${\mathrm{cm}}^{\ensuremath{-}1}$ of the

{5}^{2}{S}_{\frac{1}{2}}+{5}^{2}{P}_{\frac{3}{2}}

dissociation limit with photoassociation spectroscopy of laser-cooled Rb atoms. We observe the rotationally resolved bound levels of the novel ${0}_{g}^{\ensuremath{-}}$ "pure long-range" state, which has an inner turning point beyond 25 bohrs. We also identify levels belonging to

{1}_{g}

and ${0}_{\ensuremath{\mu}}^{+}$ states and find that the ${0}_{\ensuremath{\mu}}^{+}$ levels are broadened by predissociation. With our new method, excited molecular states with a binding energy from less than 0.3 to more than 1000 ${\mathrm{cm}}^{\ensuremath{-}1}$ can be studied with a resolution better than 0.002 ${\mathrm{cm}}^{\ensuremath{-}1}$.