Dynamic Characterization of an Alkali-Ion Battery as a Source for Laser-Cooled Atoms
Dynamic Characterization of an Alkali-Ion Battery as a Source for Laser-Cooled Atoms
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DOI：
10.1103/physrevapplied.13.044038
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发表时间：
2020-04-14
影响因子：
4.6
通讯作者：
Kitching, J.
中科院分区：
文献类型：
--
作者：
McGilligan, J. P.;Moons, K. R.;Kitching, J.
本文研究了一种用于激光冷却原子产生的真空系统中碱金属原子密度可调的固态可逆碱金属离子电池（AIB）。冷原子样品可以与真空计时电流法一起使用，作为电压控制的电化学反应的诊断，该反应将碱金属原子源或沉到蒸汽中。在一个组合的反应扩散限制制度，我们表明，在磁光阱中的激光冷却原子的数量可以增加最初加载的AIB从蒸汽中的时间更长，并通过使用更高的电压时，原子随后源回到蒸汽中的AIB。与响应于AIB电压变化的原子数变化相关的时间常数在0.5-40 s的范围内。AIB碱储存器被证明在暴露于大气中期间能够经受氧化，从而简化了储存器装载，然后实施真空，作为传统的间接加热分配器的替代品。AIB能力可以在下一代原子钟和传感器中提供改进的原子数稳定性，同时还促进快速加载和增加的询问时间。
We investigate a solid-state reversible alkali-ion battery (AIB) capable of regulating the density of alkali atoms in a vacuum system used for the production of laser-cooled atoms. The cold-atom sample can be used with in-vacuum chronoamperometry as a diagnostic for the voltage-controlled electrochemical reaction that sources or sinks alkali atoms into the vapor. In a combined reaction-diffusion-limited regime, we show that the number of laser-cooled atoms in a magneto-optical trap can be increased both by initially loading the AIB from the vapor for longer and by using higher voltages across the AIB when atoms are subsequently sourced back into the vapor. The time constants associated with the change in atom number in response to a change in AIB voltage are in the range of 0.5-40 s. The AIB alkali reservoir is demonstrated to survive oxidization during atmospheric exposure, simplifying reservoir loading prior to vacuum implementation as a replacement for traditional resistively heated dispensers. The AIB capabilities may provide an improved atom-number stability in next-generation atomic clocks and sensors, while also facilitating fast loading and increased interrogation times.