EXPERIMENTAL-OBSERVATION OF OPTICALLY TRAPPED ATOMS
EXPERIMENTAL-OBSERVATION OF OPTICALLY TRAPPED ATOMS
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DOI：
10.1103/physrevlett.57.314
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发表时间：
1986-07-21
影响因子：
8.6
通讯作者：
CABLE, A
中科院分区：
文献类型：
--
作者：
CHU, S;BJORKHOLM, JE;CABLE, A
我们报告的第一个观察光学囚禁原子。在”光学糖蜜”中冷却到10− 3 K以下的钠原子被一个偶极力光学陷阱捕获，该光学陷阱是由一个单一的、强聚焦的、高斯激光束产生的，该激光束被调谐到低于D1共振跃迁的几百千兆赫兹。我们估计，大约有500个原子被限制在大约10 3 μ m 3的体积中，密度为10 11-10 12 cm− 3。陷阱的寿命受到背景压力的限制，只有几秒钟。所观察到的捕获行为与理论预期具有良好的定量一致性。
We report the first observation of optically trapped atoms. Sodium atoms cooled below 10− 3 K in" optical molasses" are captured by a dipole-force optical trap created by a single, strongly focused, Gaussian laser beam tuned several hundred gigahertz below the D 1 resonance transition. We estimate that about 500 atoms are confined in a volume of about 10 3 μ m 3 at a density of 10 11-10 12 cm− 3. Trap lifetimes are limited by background pressure to several seconds. The observed trapping behavior is in good quantitative agreement with theoretical expectations.