High sensitive photoassociation spectroscopy based on modulated ultra-cold Cs atoms

High sensitive photoassociation spectroscopy based on modulated ultra-cold Cs atoms
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基于调制超冷Cs原子的高灵敏光缔合光谱

DOI:
10.1007/s00340-007-2737-0
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发表时间:
2007-08
期刊:
Applied Physics B
影响因子:
--
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其他
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报道了一种基于调制超冷铯原子的高灵敏度光缔合光谱。在6S_(1/2)+6P_(3/2)解离极限以下,用红失谐量为40 cm ~(-1)的光缔合激光照射磁光阱中的冷铯气体,观察到与激发态超冷分子的光缔合.使用锁定检测很好地解决了0 g态的旋转束缚能级。测量了与此解离极限相关的0 g-、1g和0 u+长程态。长程偶极-偶极相互作用常数通过拟合实验能级确定。
In this paper, a high sensitive photoassociation spectroscopy based on modulated ultra-cold cesium atoms is reported. The cold cesium gas in the magneto-optical trap is illuminated by a photoassociation laser with red detuning 40 cm-1below the 6S1/2+6P3/2dissociation limit and photoassociation to the excited state ultra-cold molecules is observed. The rotationally bound levels of 0g-state are well resolved using the lock-in detection. The 0g-, 1gand 0u+long range states which connect to this dissociation limit are measured. The long-range dipole–dipole interaction constants are determined through a fit of the experimental energy levels.
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