Photoassociation of ultracold NaCs via (4) Ω = 1 yields deeply-bound, highly polar X 1 Σ + states

Amy Wakim, Patrick Zabawa, N. P. Bigelow

Xuan Li

We investigate the formation of ultracold NaCs molecules by photoassociation of Na and Cs atoms.

Christopher Haimberger, Jan Kleinert, Patrick Zabawa +2 more

We present photoassociation spectroscopy of ultracold NaCs molecules formed in a dual-species magneto-optical trap. Excited-state molecules are formed in states correlating to the Na(3S 1/2 )+Cs(6P 3/2 ) asymptote. We assign the most prominent observed vibrational progression to the Ω=2 long range state based on a comparison with ab initio potentials. Molecules are secondarily excited before decaying to deeply bound levels of the electronic ground X 1 Σ + state where they are ionized and detected by time-of-flight mass spectroscopy.

Jun Rui

Matthias Weidemüller

Marek Haruza, Patrick Zabawa, Amy Wakim +1 more

We present our investigation of photoassociation channels associated with the A1Σ and b3Π electronic states of NaCs including hyperfine structure of high lying levels. We calculate dispersion coefficients and determine a new b3ΠΩ=2 PEC.