Optical production of stable ultracold (88)Sr(2) molecules.
Optical production of stable ultracold (88)Sr(2) molecules.
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稳定超冷 (88)Sr(2) 分子的光学生产。
DOI：
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发表时间：
2012
影响因子：
8.6
通讯作者：
T. Zelevinsky
中科院分区：
文献类型：
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作者：
G. Reinaudi;C. Osborn;M. McDonald;S. Kotochigova;T. Zelevinsky
我们已经在光学晶格中制备了大量的处于电子基态的稳定的超冷（88）Sr（2）分子样品。快速，全光学方法的分子创造涉及一个近相互结合线的光缔合脉冲，然后自发辐射与近统一的弗兰克-康登因子。检测使用激发到对应于非常大的二聚体的弱束缚电子激发振动能级，并产生高Q分子振动共振。这是产生用于频率计量和超冷化学的深度结合的（88）Sr（2）所需的两个步骤中的第一个。
We have produced large samples of stable ultracold (88)Sr(2) molecules in the electronic ground state in an optical lattice. The fast, all-optical method of molecule creation involves a near-intercombination-line photoassociation pulse followed by spontaneous emission with a near-unity Franck-Condon factor. The detection uses excitation to a weakly bound electronically excited vibrational level corresponding to a very large dimer and yields a high-Q molecular vibronic resonance. This is the first of two steps needed to create deeply bound (88)Sr(2) for frequency metrology and ultracold chemistry.