Abstract
We performed the Ramsey experiment of optical separated oscillatory fields based on a cold continuous \(^{87}\hbox {Rb}\) atomic beam. The beam had a free evolution time of 3.4 ms over a short interaction-zone separation of 42 mm, producing a central Raman–Ramsey fringe with a linewidth of 146 Hz (full width at half maximum). This Raman–Ramsey interferometer based on an atomic beam offers a promising solution for developing a highly stable, compact atomic clock.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant No. 61473166) and the Major State Basic Research Development Program of China (973 Program; Grant No. 2010CB922900). Yanying Feng would like to thank the China Scholarship Council (CSC No. 2011811180) for their support.
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Feng, Y., Xue, H., Wang, X. et al. Observation of Ramsey fringes using stimulated Raman transitions in a laser-cooled continuous rubidium atomic beam. Appl. Phys. B 118, 139–144 (2015). https://doi.org/10.1007/s00340-014-5962-3
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DOI: https://doi.org/10.1007/s00340-014-5962-3