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Laser-noise-immune pulsed optically pumped atomic clock by means of differential detection

Xuejie Li, Yuhan Yan, Bowen Yang +4 more

Physical Review AppliedSep 2, 20250 citations

Research on Atomic Phase Feedback in Pulsed Optically Pumped Atomic Clocks

Gongxun Dong, 林锦达 Lin Jinda, 张松 Zhang Song +2 more

Acta Optica SinicaJan 1, 20171 citation

Frequency stability of a pulsed optically pumped atomic clock with narrow Ramsey linewidth

Haixiao Lin, Jianliao Deng, Jinda Lin +2 more

In general, the linewidth of the Ramsey central fringe (RCF) is equal to 1/(2T), where T is the Ramsey free-evolution time. We demonstrate that the RCF linewidth of a pulsed optically pumped (POP) atomic clock with orthogonal polarization detection based on the magneto-optical rotation effect can be narrowed down to 1/(4T). The Allan deviation of the POP atomic clock decreases from 2.4×10−13τ−1/2 to 1.4×10−13τ−1/2. This corresponds to an improvement in the frequency stability by about 60%. We also estimate the main noise sources that limit the short-term frequency stability of the POP atomic clock.In general, the linewidth of the Ramsey central fringe (RCF) is equal to 1/(2T), where T is the Ramsey free-evolution time. We demonstrate that the RCF linewidth of a pulsed optically pumped (POP) atomic clock with orthogonal polarization detection based on the magneto-optical rotation effect can be narrowed down to 1/(4T). The Allan deviation of the POP atomic clock decreases from 2.4×10−13τ−1/2 to 1.4×10−13τ−1/2. This corresponds to an improvement in the frequency stability by about 60%. We also estimate the main noise sources that limit the short-term frequency stability of the POP atomic clock.

Applied OpticsApr 12, 201814 citations

Pulsed optically pumped rubidium atomic clock with optical detection

I. H. Choi, Y.-H. Park, S. H. Lee +3 more

We describe the ongoing work on a87Rb vapor-cell atomic clock using pulsed optical pumping with an optical detection technique. In order to eliminate the light shifts and to increase the stability of vapor-cell atomic clock, pulsed optical pumping technique has been used. For simplicity, direct laser absorption signal is used for the detection of a clock transition.

Conference on Precision Electromagnetic MeasurementsJun 1, 20080 citations

Improvement of short-term stability of pulsed optically pumped rubidium atomic clock

I. H. Choi, S. B. Lee, Taeg Yong Kwon +1 more

We present a87Rb vapor-cell atomic clock using pulsed optical pumping with an optical detection technique. The pulsed optical pumping technique can eliminate the light shifts and increase the stability of vapor-cell atomic clock. For simplicity, direct laser absorption signal is used for the detection of a clock transition. A frequency stability of about 2×10-11at 1s has been measured and short term stability is improved by reducing the pulse sequence time with a real time control system.

Jun 1, 20101 citation

New methods for the production and detection of polarized atoms

Dimitris Sofikitis

Jun 1, 20100 citations

Progress of Orthogonal Polarization Detection Technology in Pulsed Optically Pumped Atomic Clock

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