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Optical Ramsey spectroscopy on laser-trapped and thermal Mg atoms

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Abstract

High-resolution spectroscopic measurements on the 457 nm Mg intercombination line are reported. Studies have been performed both on atoms contained in a magneto-optical trap and on atoms in a thermal beam. We present a detailed analysis of various factors influencing resolution and accuracy for both setups, including direct comparisons. With the trapped cold atoms, a stability of 8.7 × 10−13 within 20 s has been achieved together with an accuracy of 2 × 10−15. The direct comparison shows the limited stability of the thermal beam apparatus for integration times larger than 300 s. For shorter times, the thermal beam setup is at present more stable by a factor of three, mainly because of a better signal-to-noise ratio.

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Authors and Affiliations

  1. Institut før Angewandte Physik der Universität Bonn, Wegelerstrasse 8, D-53115, Bonn, Germany

    K. Sengstock, U. Sterr, J. H. Müller, V. Rieger, D. Bettermann & W. Ertmer

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  1. K. Sengstock
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  2. U. Sterr
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  3. J. H. Müller
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  4. V. Rieger
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  5. D. Bettermann
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  6. W. Ertmer
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Sengstock, K., Sterr, U., Müller, J.H. et al. Optical Ramsey spectroscopy on laser-trapped and thermal Mg atoms. Appl. Phys. B 59, 99–115 (1994). https://doi.org/10.1007/BF01081160

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