Formation of ultracold 7Li85Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy
Formation of ultracold 7Li85Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy
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DOI：
10.1063/1.4914917
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发表时间：
2015-03-21
影响因子：
4.4
通讯作者：
Elliott, D. S.
中科院分区：
文献类型：
--
作者：
Altaf, Adeel;Dutta, Sourav;Elliott, D. S.
We report the formation of ultracold (LiRb)-Li-7-Rb-85 molecules in the a(3)Sigma(+) electronic state by photoassociation (PA) and their detection via resonantly enhanced multiphoton ionization (REMPI). With our dual-species Li and Rb magneto-optical trap apparatus, we detect PA resonances with binding energies up to similar to 62 cm(-1) below the Li-7 2s S-2(1/2) + Rb-85 5p P-2(1/2) asymptote. In addition, we use REMPI spectroscopy to probe the a(3)Sigma(+) state and excited electronic 3(3)Pi and 4(3)Sigma+ states and identify a(3)Sigma(+) (v'' = 7-13), 3(3)Pi (v(Pi)' = 0-10), and 4(3)Sigma(+) (v(Sigma)' = 0-5) vibrational levels. Our line assignments agree well with ab initio calculations. These preliminary spectroscopic studies on previously unobserved electronic states are crucial to discovering transition pathways for transferring ultracold LiRb molecules created via PA to deeply bound rovibrational levels of the electronic ground state. (C) 2015 AIP Publishing LLC.
