Ramsey Spectroscopy of CPT Resonances on the D1 Line of Alkali Metal Atoms in Miniature Cells in the Field of Counterpropagating Waves with Opposite Circular Polarizations

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY JETP Letters Pub Date : 2024-11-12 DOI:10.1134/S0021364024603130

V. I. Yudin, M. Yu. Basalaev, D. A. Radnatarov, I. V. Gromov, M. D. Radchenko, S. M. Kobtsev, A. V. Taichenachev

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Abstract

In this study, the Ramsey spectroscopy of coherent population trapping resonances excited on the D₁ line of alkali metal atoms in miniature vapor cells has been studied theoretically and experimentally. The configuration of the field produced by two counterpropagating waves with opposite circular polarizations has been considered. A counterpropagating wave is formed as a result of reflection from a partially transmitting output mirror, while the signal from the initial wave transmitted through the mirror is detected. It is shown that such a scheme is characterized by the optimal mirror reflection coefficient, for which the short-term stability can be substantially improved relative to the standard scheme without the counterpropagating wave. The three-fold improvement of the short-term stability of the atomic clock based on the coherent population trapping resonance in a vapor cell with ⁸⁷Rb atoms has been demonstrated experimentally.

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微型电池中碱金属原子 D1 线的 CPT 共振在相反圆极化反向传播波场中的拉姆齐光谱分析

本研究从理论和实验两方面研究了在微型蒸气电池中碱金属原子 D1 线上激发的相干群体捕获共振的拉姆齐光谱学。研究考虑了两个具有相反圆极化的反传播波产生的场的配置。反向传播波是由部分透射输出镜反射形成的，而通过反射镜透射的初始波信号则被检测到。结果表明，这种方案具有最佳镜面反射系数的特点，与没有反向传播波的标准方案相比，其短期稳定性可大幅提高。实验证明，在使用 87Rb 原子的汽化池中，基于相干群体捕获共振的原子钟的短期稳定性提高了三倍。

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.