We have produced ultracold polar RbCs molecules via photoassociation starting from laser-cooled 85Rb and 133Cs atoms in a dual−species,forced dark magneto-optical trap.The formed electronically excited RbCs∗molecules ...We have produced ultracold polar RbCs molecules via photoassociation starting from laser-cooled 85Rb and 133Cs atoms in a dual−species,forced dark magneto-optical trap.The formed electronically excited RbCs∗molecules correlated to the Rb(5S_(1/2))+Cs(6P_(1/2))dissociation limit are observed by trap loss spectroscopy.Following the decay of these excited RbCs*molecules,the formed ground state molecules are directly ionized by a two-photon single-color pulse dye laser,which is a new ionization mechanism for ground state RbCs molecules and thence detected by time-of-flight mass spectroscopy.展开更多
基金by the National Key Fundamental Basic Research Program of China(2006CB921603)Major Program of the National Natural Science Foundation of China(10934004)+2 种基金the National Natural Science Foundation of China(60978018,60808009,61008012,and 60978001)the New Teacher Fund of Ministry of Education of China(200801081021)NSFC Project for Excellent Research Team(Grant No 60821004).
文摘We have produced ultracold polar RbCs molecules via photoassociation starting from laser-cooled 85Rb and 133Cs atoms in a dual−species,forced dark magneto-optical trap.The formed electronically excited RbCs∗molecules correlated to the Rb(5S_(1/2))+Cs(6P_(1/2))dissociation limit are observed by trap loss spectroscopy.Following the decay of these excited RbCs*molecules,the formed ground state molecules are directly ionized by a two-photon single-color pulse dye laser,which is a new ionization mechanism for ground state RbCs molecules and thence detected by time-of-flight mass spectroscopy.