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  • Comparing a mercury optical... Comparing a mercury optical lattice clock with microwave and optical frequency standards
    Tyumenev, R; Favier, M; Bilicki, S ... New journal of physics, 11/2016, Volume: 18, Issue: 11
    Journal Article
    Peer reviewed
    Open access

    In this paper we report the evaluation of an optical lattice clock based on neutral mercury with a relative uncertainty of 1.7 × 10 − 16 . Comparing this characterized frequency standard to a 133Cs ...
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  • Multi-mode heterodyne laser... Multi-mode heterodyne laser interferometry realized via software defined radio
    Lin, X.; Hartman, M. T.; Zhang, S. ... Optics express, 11/2023, Volume: 31, Issue: 23
    Journal Article
    Peer reviewed
    Open access

    The agile generation and control of multiple optical frequency modes combined with the realtime processing of multi-mode data provides access to experimentation in domains such as optomechanical ...
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  • Experimental realization of... Experimental realization of an optical second with strontium lattice clocks
    Le Targat, R; Lorini, L; Le Coq, Y ... Nature communications, 2013, Volume: 4, Issue: 1
    Journal Article
    Peer reviewed
    Open access

    Progress in realizing the SI second had multiple technological impacts and enabled further constraint of theoretical models in fundamental physics. Caesium microwave fountains, realizing best the ...
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  • Dispersive heterodyne probi... Dispersive heterodyne probing method for laser frequency stabilization based on spectral hole burning in rare-earth doped crystals
    Gobron, O; Jung, K; Galland, N ... Optics express, 2017-Jun-26, 2017-06-26, 20170626, Volume: 25, Issue: 13
    Journal Article
    Peer reviewed
    Open access

    Frequency-locking a laser to a spectral hole in rare-earth doped crystals at cryogenic temperature has been shown to be a promising alternative to the use of high finesse Fabry-Perot cavities when ...
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  • A clock network for geodesy... A clock network for geodesy and fundamental science
    Lisdat, C; Grosche, G; Quintin, N ... Nature communications, 08/2016, Volume: 7, Issue: 1
    Journal Article
    Peer reviewed
    Open access

    Leveraging the unrivalled performance of optical clocks as key tools for geo-science, for astronomy and for fundamental physics beyond the standard model requires comparing the frequency of distant ...
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  • Sr lattice clock at 1 x 10(-16) fractional uncertainty by remote optical evaluation with a Ca clock
    Ludlow, A D; Zelevinsky, T; Campbell, G K ... Science (American Association for the Advancement of Science), 2008-Mar-28, 20080328, Volume: 319, Issue: 5871
    Journal Article
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    Open access

    Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these clocks require direct comparisons between ...
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