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arXiv 1808.04992physics.optics
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内原子源涂敷蒸气室中Rb原子的特殊长时荧光

Peculiar long-term fluorescence of Rb atoms in coated vapor cell with internal atomic source

S. N. Atutov, V. A. Sorokin, S. N. Bagayev, M. N. Skvortsov, A. V. Taichenachev

摘要:

我们报道了一个实验,在一个有涂层的蒸气室中,Rb原子5P能级的荧光衰减时间超过几毫秒,比正常的铷原子激发态的衰减时间长许多数量级。我们发现,这种特殊的长期衰减不是指数的,只能在原子基态子能级上具有长寿命的光泵浦原子的高质量涂覆细胞中观察到。给出了一种基于完全密度矩阵的数值模拟方法。它支持通过Rb原子的基态子能级的人口泵过程作为观察到的现象的最合理的机制,它始终证明了实验的所有相关功能。例如,该调查可以用于探索用于谐振单元的各种抗松弛涂层的质量。

英文摘要:

We report on an experiment in which the fluorescence decay time of 5P levels of Rb atoms in a coated vapor cell exceeds several of milliseconds, many orders of magnitude longer than normal decay time of excited of rubidium atoms. We found that this peculiarly long - term decay is not exponential and can only be observed in a high quality coated cell with a long lifetime of optical pumped atoms on atomic ground-state sublevels. A numerical simulation based on a complete density matrix is presented. It supports the population pumping process through the ground-state sublevels of Rb atoms as the most plausible mechanism for the observed phenomenon and it consistently demonstrates all the relevant features of the experiment. The investigation can be used, for example, to explore the quality of a various anti-relaxation coatings used for the resonant cells.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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