Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, Italy.
IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Mar;59(3):457-62. doi: 10.1109/TUFFC.2012.2215.
In this paper, we present the performance of a vapor-cell rubidium frequency standard working in the pulsed regime, in which the clock signal is represented by a Ramsey pattern observed on an optically detected laser absorption signal. The main experimental results agree with previously reported theoretical predictions. In particular, we measured a relative frequency stability of σy(τ) - 1.6 × 10(-13)τ-1/2 for integration times, τ, up to 200 s, which represents a record in short-term stability for a vapor-cell clock. We also discuss the most important physical phenomena that contribute to this result.
在本文中，我们展示了工作在脉冲模式下的蒸气室铷频标性能，其中时钟信号由在光探测激光吸收信号上观察到的拉姆齐模式表示。主要实验结果与先前报道的理论预测相符。具体来说，我们在积分时间τ长达 200 s 的情况下测量到相对频率稳定性σy(τ) - 1.6×10(-13)τ-1/2，这代表了蒸气室时钟在短期稳定性方面的一项新纪录。我们还讨论了对这一结果有贡献的最重要的物理现象。
