We propose and demonstrate an experimental implementation for the observation of magnetic fields from spatial features of absorption profiles in a warm atomic vapor. A radially polarized vector beam that traverses atomic vapor will generate an absorption pattern with a petal-like structure by the mediation of a transverse magnetic field (TMF). The spatial absorption pattern rotates when the azimuthal angle of the TMF is changed, while its contrast decreases when the longitudinal component of the magnetic field increases. By analyzing the intensity distribution of the transmitted pattern, we can determine the magnetic field strength. Our work provides a framework for investigating 3D magnetic field distributions based on atoms.

中文翻译：

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在温暖的原子蒸气中用圆柱形矢量束可视化磁场

我们提出并演示了一种实验实现，用于从温暖的原子蒸气中吸收分布的空间特征观察磁场。穿过原子蒸气的径向极化矢量束将通过横向磁场 (TMF) 的中介产生具有花瓣状结构的吸收模式。当 TMF 的方位角改变时，空间吸收图案旋转，而当磁场的纵向分量增加时，其对比度降低。通过分析透射图案的强度分布，我们可以确定磁场强度。我们的工作为研究基于原子的 3D 磁场分布提供了框架。