Production of RbCs Molecules in the Rovibronic Ground State via Short-Range Photoassociation to the 2 (1)Pi(1), 2 (3)Pi(1), and 3 (3)Sigma(+)(1) States

摘要

We report the production of ultracold (RbCs)-Rb-85-Cs-133 molecules in their rovibronic ground state X-1 sigma(+) (v=0; J=0), by short-range photoassociation (PA) to the 2 (1)(1), 2 (3)(1), and 3 (3) states. In the PA frequency range from 11650 to 12150cm(-1) (corresponding to energy levels 15500-16000cm(-1) above 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 3 (3) (v=3) state has the highest molecule production rate of 2 x 10(3)moleculess(-1) into the rovibronic ground state.