Toshihiko Shimasaki

Continuous formation of vibronic ground state RbCs molecules via photoassociation

We demonstrate the direct formation of vibronic ground state RbCs molecules by photoassociation of ultracold atoms followed by radiative stabilization. The photoassociation proceeds through deeply bound levels of the (2)3?0+ state. From analysis of the relevant free-to-bound and bound-to-bound Franck?Condon factors, we have predicted and experimentally verified a set of photoassociation resonances that lead to efficient creation of molecules in the v?=?0 vibrational level of the X1?+ electronic ground state. We also compare the observed and calculated laser intensity required to saturate the photoassociation rate. We discuss the prospects for using short-range photoassociation to create and accumulate samples of ultracold polar molecules in their rovibronic ground state.

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.,

Production of RbCs Molecules in the Rovibronic Ground State via Short‐Range Photoassociation to the 2 1Π1, 2 3Π1, and 3 3Σ1+ States

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

Continuous Production of Rovibrational Ground State RbCs via Photoassociation

, by short-range photoassociation to the

Injection-locking of a fiber-pigtailed laser to an external cavity diode laser via fiber optic circulator

2^3\Pi_{0}

Continuous Production of Rovibronic Ground State RbCs Molecules via Short-Range Photoassociation to the

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

b^3\Pi_{1}-c^3\Sigma^+_{1}-B^1\Pi_1

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

States

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

Continuous production of rovibronic-ground-state RbCs molecules via short-range photoassociation to the bΠ13–cΣ1+3–BΠ11 states

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

Continuous Production of Rovibronic Ground State RbCs Molecules via Short-Range Photoassociation to the

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