title: Production of RbCs Molecules in the Rovibronic Ground State via Short-Range Photoassociation to the 21Π1, 23Π1, and 33Σ1+ States.
abstract: We report the production of ultracold85Rb133Cs molecules in their rovibronic ground state X1Σ+(v=0; J=0), by short-range photoassociation (PA) to the 21Π1, 23Π1, and 33Σ1+ states. In the PA frequency range from 11650 to 12150 cm-1(corresponding to energy levels 15500-16000 cm-1above the bottom of the X potential), we have observed 40 sets of new PA lines. For selected PA states, we investigate vibrational branching, rotational branching, and saturation behavior. Among these 40 new PA lines, the 33Σ1+ (v=3) state has the highest molecule production rate of 2 x 103molecules s-1into the rovibronic ground state.
authors.affiliation: Department of Physics, Yale University, 217 Prospect, New Haven, CT, USA, 06511.
authors.forename: Toshihiko
authors.identifier: http://orcid.org/0000-0003-2094-7894
authors.initials: T
authors.lastname: Shimasaki
authors.affiliation: Department of Photonic Engineering, Chosun University, 309 Pilmun-Daero Dong-Gu, Gwangju, 61452, Korea.
authors.forename: Jin-Tae
authors.initials: JT
authors.lastname: Kim
authors.affiliation: Department of Physics, Yale University, 217 Prospect, New Haven, CT, USA, 06511.
authors.forename: David
authors.initials: D
authors.lastname: DeMille
keywords: RbCs; cold molecules; laser spectroscopy; photoassociation; singlet-triplet mixing