论文标题
微电池用于磁场传感的饱和吸收技术
Saturated absorption technique used in Potassium microcell for magnetic field sensing
论文作者
论文摘要
证明使用微米薄$^{39} $ k蒸气池（MTC）和饱和吸收光谱（SA）允许在没有不需要的交叉（CO）共振的情况下形成狭窄的原子线。另一个重要功能是$^{39} $ k的小特征磁场值$ b_0 = a_ {hf}/μ_b$ of $^{39} $ k，明显小于RB和CS。结果，可以在相对较低的磁场$ \ sim $ 300 g的情况下观察到$ j $和$ i $的解耦，这导致形成了两组四组，由四个四个良好良好的良好且位置的原子过渡形成具有相同幅度相同的振幅（每组都与给定的圆形极化$ f pm pm firlyder finlyder finlyder finlyder finlyder finlyder finlyter finlyder finlyding finlyter pm finlyter pm）用两个永久磁体获得的二极管激光器和纵向磁场。 MTC的制造要比我们以前的作品中使用的$^{39} $ k纳米细胞的制造要容易得多。提出了一种简单的方法，用于确定空间分辨率为30 $μ$ m的广泛B场的大小，这是本质上校准的，不需要频率参考。
It is demonstrated that the use of a Micrometric Thin $^{39}$K vapor Cell (MTC) and Saturated Absorption spectroscopy (SA) allows to form narrow atomic lines in transmission spectrum without unwanted Cross-Over (CO) resonances. Another important feature is the small characteristic magnetic field value $B_0 = A_{hf}/μ_B$ of $^{39}$K, significantly smaller than for Rb and Cs. As a consequence, decoupling of $J$ and $I$ can be observed at relatively low magnetic fields $\sim$300 G, which results in the formation of two groups of four well-spectrally-resolved and equidistantly-positioned atomic transitions having the same amplitude (each group corresponds to a given circular polarization $σ^\pm$) which we record using a simple experimental setup with a linearly polarized tunable diode-laser and a longitudinal magnetic field obtained with two permanent magnets. Fabrication of a MTC is much easier than the fabrication of the $^{39}$K nanocells used in our previous works. A simple method to determine the magnitude of a wide range of B-fields with a spatial resolution of 30 $μ$m is presented, which is intrinsically calibrated and does not require a frequency reference.
