Khan Shabraz, Noh Heung-Ryoul, Kim Jin-Tae
Department of Photonic Engineering, Chosun University, Gwangju, 61452, Korea.
Department of Physics, Chonnam National University, Gwangju, 61186, Korea.
Sci Rep. 2025 Mar 5;15(1):7713. doi: 10.1038/s41598-025-92562-z.
We have investigated the detailed line shapes of modulation transfer spectroscopy (MTS) for the [Formula: see text], and 3 transitions of Rb due to neighboring hyperfine transitions. This analysis has been conducted under four different polarization configurations: linear parallel, linear perpendicular, circular parallel, and circular perpendicular configurations. To the best of our knowledge the effects of neighboring transitions have been applied to MTS for the first time. The dependencies in the asymmetric MTS spectra resulting from the neighboring effects on the [Formula: see text] transition of Rb are accounted for by artificially adjusting the hyperfine energy separations in the excited state. We also investigate the detailed MTS line shapes for the [Formula: see text] transitions of Rb, considering circular polarization configurations. The significant strength of the MTS spectra for the crossover lines involving the [Formula: see text] and 1 states of Rb in the [Formula: see text] polarization configuration can be explained through a MTS signal mediated by spontaneous emission. Theoretical line shapes of these transitions, calculated using the density matrix equations, show good agreement with the observed spectra.
我们研究了调制转移光谱（MTS）中[公式：见原文]以及铷由于相邻超精细跃迁产生的3个跃迁的详细线型。该分析是在四种不同的偏振配置下进行的：线性平行、线性垂直、圆平行和圆垂直配置。据我们所知，相邻跃迁的影响首次应用于MTS。通过人工调整激发态的超精细能量间隔，解释了铷的[公式：见原文]跃迁中相邻效应导致的不对称MTS光谱中的相关性。我们还考虑圆偏振配置，研究了铷的[公式：见原文]跃迁的详细MTS线型。在[公式：见原文]偏振配置下，涉及铷的[公式：见原文]和1态的交叉线的MTS光谱的显著强度可以通过自发发射介导的MTS信号来解释。使用密度矩阵方程计算的这些跃迁的理论线型与观测光谱显示出良好的一致性。
