Michael Bellos

Resonant coupling in the heteronuclear alkali dimers for direct photoassociative formation of X(0,0) ultracold molecules.

Promising pathways for photoassociative formation of ultracold heteronuclear alkali metal dimers in their lowest rovibronic levels (denoted X(0,0)) are examined using high-quality ab initio calculations of potential energy curves currently available. A promising pathway for KRb, involving the resonant coupling of the 2(1)Pi and 1(1)Pi states just below the lowest excited asymptote (K(4s) + Rb(5p(1/2))), is found to occur also for RbCs and less promisingly for KCs also. The resonant coupling of the 3(1)Sigma(+) and 1(1)Pi states, also just below the lowest excited asymptote, is found to be promising for LiNa, LiK, and LiRb and less promising for LiCs and KCs. Direct photoassociation to the 1(1)Pi state near dissociation appears promising in the final dimers NaK, NaRb, and NaCs, although detuning more than 100 cm(-1) below the lowest excited asymptote may be required.

Production of rovibronic-ground-state RbCs molecules via two-photon-cascade decay

We report the production of ultracold RbCs molecules in the rovibronic ground state, i.e.,

Shortcuts for understanding rovibronic spectroscopy of ultracold alkali metal diatomic molecules

X^1\Sigma^+ (v=0, J=0)

Upper Bound to the Ionization Energy of 85 Rb2

, by short-range photoassociation to the

Excitation of Weakly Bound Molecules to Trilobitelike Rydberg States

2^3\Pi_{0}

Direct photoassociative formation of ultracold KRb molecules in the lowest vibrational levels of the electronic ground state

state followed by spontaneous emission. We use narrowband depletion spectroscopy to probe the distribution of rotational levels formed in the

Spectroscopy of the double minimum 3 3ΠΩ electronic state of 39K85Rb

X ^1\Sigma^+(v=0)

Formation of ultracold Rb2 molecules in the v′′ = 0 level of the a3Σ+u state via blue-detuned photoassociation to the 13Πg state

state. We conclude, based on selection rules, that the primary decay route to

Spectroscopy and applications of the 3 3Σ+ electronic state of 39K85Rb

X ^1\Sigma^+(v=0)

Excitation of ultracold molecules to trilobite-like Rydberg states

is a two-step cascade decay that leads to as much as