论文标题
光学厚的原子蒸气中的Voigt变速箱窗口：一种创建单峰线中心过滤器的方法
Voigt transmission windows in optically thick atomic vapours: a method to create single-peaked line centre filters
论文作者
论文摘要
已经证明，通过两个热蒸气细胞的级联光可以改善原子过滤器的性能，旨在最大程度地在最小化的带通窗口上传播峰值。在本文中，我们探索了负责第二个细胞操作的原子理，该原子位于横向（VOIGT）磁场中，并在光学厚的原子蒸气中打开狭窄的传输窗口。通过假设高斯线形状和磁场的过渡足够大以访问Hyperfine paschen-back态度，该窗口是通过解决最接近线中心的两个过渡来建模的。我们讨论了该模型的有效性，并执行了一个实验，该实验证明了自然丰富的RB传输窗口的演变作为磁场的函数。该模型可显着减少两细胞参数空间，我们用来在两条d线上为Na，K，Rb和Cs找到理论优化的级联线中心过滤器。除CS外，这些都比文献中具有可比的单细胞过滤器具有更好的功绩。最值得注意的是RB-D2滤波器，该滤波器在线中心的单个峰上输出> 92％的光线，最大传输为0.71，最大宽度为330 MHz。
Cascading light through two thermal vapour cells has been shown to improve the performance of atomic filters that aim to maximise peak transmission over a minimised bandpass window. In this paper, we explore the atomic physics responsible for the operation of the second cell, which is situated in a transverse (Voigt) magnetic field and opens a narrow transmission window in an optically thick atomic vapour. By assuming transitions with Gaussian line shapes and magnetic fields sufficiently large to access the hyperfine Paschen-Back regime, the window is modelled by resolving the two transitions closest to line centre. We discuss the validity of this model and perform an experiment which demonstrates the evolution of a naturally abundant Rb transmission window as a function of magnetic field. The model results in a significant reduction in two-cell parameter space, which we use to find theoretical optimised cascaded line centre filters for Na, K, Rb and Cs across both D lines. With the exception of Cs, these all have a better figure of merit than comparable single cell filters in literature. Most noteworthy is a Rb-D2 filter which outputs >92% of light through a single peak at line centre, with maximum transmission 0.71 and a width of 330 MHz at half maximum.
