The "atomic candle:" progress towards a smart rubidium atomic clock [and application to microwave dielectric measurements]

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI:10.1109/FREQ.2000.887440

J. Camparo

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引用次数: 3

Abstract

Just as it is possible to stabilize the frequency of an electromagnetic field to an atomic resonance between energy eigenstates, so it is possible to stabilize the intensity or brightness of a field to an atomic Rabi-resonance. We term such a device an "atomic candle." We describe the operation of a microwave atomic candle based on the 0-0 ground state hyperfine transition in /sup 87/Rb, and our experiments examining its stability and sensitivity to various experimental parameters. Specifically, we have measured the microwave power stability of our candle, relative to the peak of the Rabi-resonance, and obtained /spl sigma//sub /spl Delta/P/P/(/spl tau/)=9/spl times/10/sup -7/+10/sup -7//spl radic//spl tau/. Additionally, we examined the Rabi-resonance shift as a function of various experimental parameters including microwave detuning from the 0-0 resonance and resonance-cell temperature. The paper concludes with a discussion of a novel application of the atomic candle: the precision measurement of a material's complex dielectric constant.

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“原子蜡烛”:智能铷原子钟的进展[及其在微波介电测量中的应用]

正如有可能将电磁场的频率稳定为能量本态之间的原子共振一样，也有可能将场的强度或亮度稳定为原子拉比共振。我们称这种装置为“原子蜡烛”。本文描述了一个基于0-0基态超精细跃迁的微波原子蜡烛在/sup 87/Rb中的工作，并对其稳定性和对各种实验参数的敏感性进行了实验研究。具体来说，我们测量了我们的蜡烛的微波功率稳定性，相对于拉比共振的峰值，得到/spl sigma//sub /spl Delta/P/P/(/spl tau/)=9/spl倍/10/sup -7/+10/sup -7//spl radic//spl tau/。此外，我们还研究了拉比共振位移作为各种实验参数的函数，包括来自0-0共振的微波失谐和共振细胞温度。最后讨论了原子蜡烛的一种新应用:材料复介电常数的精确测量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)

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