Abstract

We present the results of our experimental investigation performed for D₂ line of ⁸⁷Rb. In this work, we have studied the phenomenon of electromagnetically induced transparency of ⁸⁷Rb in presence of a transverse magnetic field and it is interesting to find the EIT spectrum shows signature of the closely lying hyperfine excited states in particular F′ = 1. We choose two different configurations for our study namely, Λ₁ and Λ₂ realised by locking probe beam at two different transition i.e. |F = 1〉 → |F′ = 2〉 and |F = 2〉 → |F′ = 2〉 respectively. We observe asymmetric features in both configurations at high magnetic field and for Λ₁ configuration we find complete conversion from transmission to absorption. We explain the observations by quantitative assessment of the impurities in the dark states which arises because of the influence of the neighbouring states. We substantiate our experimental findings with density based numerical calculations.

Graphical abstract

中文翻译：

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了解强横向磁场中87 Rb的电磁感应透明性的不对称性

摘要

我们介绍对⁸⁷ Rb的D ₂线进行的实验研究的结果。在这项工作中，我们研究了在横向磁场存在下电磁感应产生的⁸⁷ Rb透明性的现象，有趣的是发现EIT光谱显示了紧密分布的超精细激发态的特征，特别是F '=1。我们选择对于我们的研究中两种不同的结构，即，Λ ₁和Λ ₂实现通过在两个不同的过渡即锁定探测光束| F  = 1〉→| | F '= 2〉和| F  = 2〉→| F′= 2〉。我们观察到在高磁场和Λ两种配置不对称的特点₁配置中，我们发现完全转化，从传输到吸收。我们通过定量评估由于邻近状态的影响而产生的黑暗状态中的杂质来解释观察结果。我们用基于密度的数值计算来证实我们的实验结果。

图形概要