Absolute absorption on the potassium D lines: theory and experiment
Absolute absorption on the potassium D lines: theory and experiment
复制标题
DOI：
10.1088/0953-4075/48/19/195004
复制
发表时间：
2015-06
期刊：
影响因子：
--
通讯作者：
R. Hanley;P. D. Gregory;I. Hughes;S. Cornish
中科院分区：
文献类型：
--
作者：
R. Hanley;P. D. Gregory;I. Hughes;S. Cornish
我们提出了一个详细的研究绝对多普勒拓宽吸收的探针束扫描通过钾D线在热蒸汽。用弱探针在4S→？并与Zentile et al（2015）详细的电磁化率理论模型进行了比较。理论物理。common . 189(162-74)，代号为ElecSus。还比较了4S→？b> 5P过渡与一个改编版本的ElecSus。这是第一次在基态超细分裂小于多普勒宽度的原子上进行的实验测试。在各种温度下，ElecSus与实验测量结果非常吻合，均数误差为~ 10−3 ？>。我们还演示了ElecSus作为原子蒸气测温工具的使用，并提出了一种可能的新跃迁衰减率测量技术，我们预测其精度为~ 3 kHz ？> ．
We present a detailed study of the absolute Doppler-broadened absorption of a probe beam scanned across the potassium D lines in a thermal vapour. Spectra using a weak probe were measured on the 4S → ?> 4P transition and compared to the theoretical model of the electric susceptibility detailed by Zentile et al (2015 Comput. Phys. Commun. 189 162–74) in the code named ElecSus. Comparisons were also made on the 4S → ?> 5P transition with an adapted version of ElecSus. This is the first experimental test of ElecSus on an atom with a ground state hyperfine splitting smaller than that of the Doppler width. An excellent agreement was found between ElecSus and experimental measurements at a variety of temperatures with rms errors ∼ 10 − 3 ?> . We have also demonstrated the use of ElecSus as an atomic vapour thermometry tool, and present a possible new measurement technique of transition decay rates which we predict to have a precision of ∼ 3 kHz ?> .