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Measurement of the caesium 6S1/2?8P1/2 transition frequency

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Abstract.

The caesium 6S 1/2? 8P 1/2,3/2 transitions at 387.6 nm and 388.8 nm have been observed with a linewidth of <5 MHz by laser spectroscopy. The absolute frequency of the 6S 1/2?8P 1/2 transition was determined to an uncertainty of ±1 MHz using the calibrated rubidium 5S 1/2?5D 5/2 two-photon transition and accurate interferometry. The potential of this caesium transition as a useful secondary frequency standard in blue–UV region is discussed.

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Authors and Affiliations

  1. Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK, , , , , , GB

    Y.-W. Liu & P.E.G. Baird

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  1. Y.-W. Liu
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  2. P.E.G. Baird
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Received: 7 February 2000 / Revised version: 24 March 2000 / Published online: 24 July 2000

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Liu, YW., Baird, P. Measurement of the caesium 6S1/2?8P1/2 transition frequency. Appl Phys B 71, 567–572 (2000). https://doi.org/10.1007/s003400000324

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  • DOI: https://doi.org/10.1007/s003400000324

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